Home

Accelerated Project Delivery - ahmct

1. eee e eere 28 Configure Scanner in Cyclone Navigator 22221220000000000000000000000000000000000000000000000000000000000000000000000 31 Step 1 ScanStation or ScanStation 2 setup eee e eere eee ee e eee eee esee eese etae ette sees osse ee eeee 32 step 2 to 7 Performing Scan akc RE A 34 Appendix B Overlay Images from External Camera ccce eee eee esee eee esee ee eee nun 39 Introduction en 39 General Workfllow usu u 39 Usme the External Camera Kit ua dci akad 40 Stitching Photos into Equirectangular Panoramic Image Using P TGuri 40 V Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials Convert Equirectangular Panoramic Image into Six Cubic Images Using Pano2QTVR 40 Register the Six Cubic Images onto the ScanWorld Point Cloud in Cyclone 41 Appendix C Cyclone Res strahon u2s EDI OOOO EA 43 Typical Registration Steps d oi EAA AEAEE ANAONA Reas 43 Tips in Identifying and Fixing Registration Errors 2221222000000000000000000000000000000000000000000000000000 43 Appendix D Point Cloud Post processing Training Topics ceeeeeee esee ee eee eee een nn 45 Appendix E Network Setting for Connecting ScanStation or ScanStation 2
2. UCDAVIS University of California at Davis California Department of Transportation Accelerated Project Delivery Case Studies and Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials Kin S Yen Kevin Akin Bahram Ravani Ty A Lasky Principal Investigator Report Number CA05 1647 AHMCT Research Report UCD ARR 08 06 30 06 Final Report of Contract 6540210 T O 08 13 AHMCT Advanced Highway Maintenance and Construction Technology Research Center Department of Mechanical and Aerospace Engineering Division of Research and Innovation Copyright 2011 AHMCT Research Center UC Davis Copyright 2011 AHMCT Research Center UC Davis Technical Documentation Page 1 Report No 2 Government Accession No 3 Recipient s Catalog No CA08 1647 4 Title and Subtitle 5 Report Date Accelerated Project Delivery Case Studies and Field Use of 3D Terrestrial June 30 2008 Laser Scanning in Caltrans Projects Phase I Training and Materials 6 Performing Organization Code 7 Author s 8 Performing Organization Report No Kin S Yen Kevin Akin Bahram Ravani and Ty A Lasky UCD ARR 08 06 30 06 9 Performing Organization Name and Address 10 Work Unit No TRAIS AHMCT Research Center UCD Dept of Mechanical amp Aerospace Engineering 11 Contract or Grant Davis California 95616 5294 IA 65A0210 Task Order 08 13 12 Sponsoring Agency Name and Address 13 Type o
3. Optimize Admin Logit dii Database Filename JE datatpoint_cloud_datattestte EJ LE 1 Cancel Close f Figure 18 Adding a database for existing and new scan data e 30 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials Configure Scanner in Cyclone Navigator The user must add the scanner in Cyclone Navigator before connecting to it for scanning Users must perform this operation once per notebook computer per scanner Typically Caltrans ScanStation 2 scanners are paired with a dedicated laptop Thus this operation may not be required as it likely will have occurred during initial setup and deployment To add a scanner in Cyclone Navigator 1 Left click on Configure in Cyclone Navigator window and left click on Scanners as shown in Figure 19a 2 Left click on the Add button in Configure Scanners as shown in Figure 19b 3 Select the scanner model using the pull down menu next to the Scanner Model field in the Add Scanner window as shown in Figure 19c Next enter a unique scanner name in the Scanner Name field and enter the unique IP address of the Scanner in the IP Address field The scanner s unique IP address is labeled on the base of the scanner next to the serial number For Caltrans the IP should start with 10 1 Left click on the OK button to close the Add Scanner w
4. 4 has purchased a ScanStation 2 and two sets of Cyclone Model Publisher and Register licenses After that Caltrans Headquarters purchased two Leica Geosystems ScanStation 2 scanners and two Cyclone Model and Register licenses The goal is to have one ScanStation 2 scanner each for the northern and southern California regions Since 2007 Caltrans surveyors have performed over 20 projects using laser scanning technology as shown in Figure 3 As of the end of Phase 1 four 4 5 6 and 11 of twelve Caltrans Districts have been trained on use of Leica ScanStation and Cyclone point cloud post processing software Training dates are shown in Table 1 After training District 4 6 and 11 surveyors performed scan projects on their own Training for remaining districts 1s expected to occur in Phase 2 research Because of the size of the district and the nature of their survey work District 9 surveyors are currently not expected to be trained to use ScanStation and Cyclone software District 7 plans to use laser scanning in a rock fall study and District 1 plans to apply laser scanning at a landslide site Table 1 Caltrans District laser scanning survey training dates for Phase 1 project Caltrans District Training Date Multiple 4 Jan 2008 6 Sep 2007 Jun 2008 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials gg Willits Downtown
5. available from this vendor specifically Pano2VR and Object2VR Optionally create a 3D viewing QuickTime movie mov using Pano2QTVR Rename cubic images Apply image overlay within each ScanWorld in Cyclone See HDS external camera workflow instructions at http software lgshds com public camera for details l http www ptgui com http gardengnomesoftware com 39 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials Using the External Camera Kit Figure 24 ScanStation and ScanStation 2 external camera kit 1 Take pictures using pano fixture and digital camera Typically 12 pictures per scan setup 1 e every 30 degrees 2 Download photos and group each scan setup s photos into a directory with directory name the same as the ScanWorld name Stitching Photos into Equirectangular Panoramic Image Using PTGui Stitching all photos together into a single rectangular panoramic image using PTGui See PTGui website for detail or other support websites Convert Equirectangular Panoramic Image into Six Cubic Images Using Pano2QTVR Convert rectangular panoramic image in six cubic images using Pano2QTVR Optionally create 3D viewing QuickTime mov using Pano2QTVR 40 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials Registe
6. capable of obtaining thousands of point measurements per second 3D laser scanners of interest for highway operations use either the Time of Flight TOF measurement method or phase based measurement to obtain target point distance see Figure 1 Time of Flight measurement technology is based upon the principle of sending out a laser pulse and observing the time taken for the pulse to reflect from an object and return to the instrument Advanced high speed electronics are used to measure the small time difference and compute the range to the target The range is combined with high resolution angular encoder measurements azimuth and elevation angles to provide the three dimensional location of the point The electronics also determines the reflected power This type of technology is similar to that used in Total Stations However the difference between 3D laser scanners and Total Stations 1s the speed of measurement Typical Total Stations may measure up to eight distances per second In contrast the 3D laser scanner is capable of measuring up to 50 000 distances per second as of this report with speed increasing for emerging commercial systems In phase based measurement technology the phase difference is measured between the reflected beam and the transmitted amplitude modulated continuous wave laser beam The target distance 1s proportional to the phase difference and the wave length of the amplitude modulated signal In addition the amplitude
7. course is quite intensive and covers extensive materials At the end of the training a set of ScanStation equipment is left with the District surveyors so that they can start using the equipment immediately to solidify what they have learned AHMCT researcher and Caltrans Headquarters Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials continue to provide technical support to District surveyors throughout their laser scanning projects Throughout this research project the training material was developed and refined by AHMCT researchers These materials are located in the appendix Training material from other authors and organizations can be found at AHMCT s Laser Scanning Resources Website http hardhat ahmct ucdavis edu mediawiki index php LaserScanResources In addition Kevin Akin produced a detailed documentation of workflow using Cyclone Virtual Surveyor to extract data for import into Autodesk CAiCE Furthermore Leica Geosystems created two training manuals High Definition Surveying Basic Training Manual and High Definition Surveying Intermediate Training Manual in addition to various application notes videos tips and tricks Deployment Status In support of the Caltrans Office of Land Survey deployment of laser scanning technology AHMCT procured a Leica Geosystems ScanStation and Cyclone software licenses Since then District
8. of the reflected beam provides the reflected power Phase and TOF optical signals signal power 0 5 0 01 02 03 04 05 06 07 08 09 4 time Figure 1 Working principle of phase based and time of flight 3D laser scanners Typically phase based scanners are capable of achieving a much higher number of point measurements in a second relative to time of flight scanners their point measurement rate 1s from about five to one hundred times greater However they have shorter useful range typically 25 100 m Time of flight scanners can provide longer range typically between 75 m to 1000 m Generally phase based scanners are used in physical plant e g factory and indoor survey Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials applications where range requirements are shorter and multiple scans from several locations are desirable due to view obstruction from structures and pipes On the other hand scanners based on TOF technology are usually used in outdoor pavement architecture and geo technical related survey applications where range requirements are larger Therefore TOF based scanners are more suitable for typical DOT applications A 3D laser scanner provides 3D positional information in a manner similar to a Total Station The 3D scanner has higher measurement speed resulting in more measurements in a shorter amount of time Th
9. s 7 Plug in power cable s 8 Turn on batteries and or plug in AC adapter The ScanStation takes 3 to 5 minutes to boot up 9 Plug in network cable 10 Measure the station height HI as shown in Figure 22 11 Setup Twin Target Pole s on the control point s 33 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials Front window Station height HI measurement mark Figure 22 Measuring scanner height HI Step 2 to 7 Performing Scan Notebook computer setup 1 Boot notebook computer usually a Panasonic Toughbook 2 Plugin network cable 3 Login as Caltrans User usually no password required The notebook computer wired network should already be setup for scanning and should not require any modifications See Appendix E for details of the wired network setup for scanning Cyclone SCAN l Start Cyclone Cyclone Navigator 2 Create database if needed Adhere to file project and ScanWorld naming conventions 3 Click on SCANNERS in Cyclone Navigator 4 Double click AHMCT UCDAVIS or other available scanner in Cyclone Scanners See configure scanner 5 Double click on the scanner name and open Cyclone SCAN 6 Select the Cyclone database and project see figure below 34 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Ph
10. secured funding to purchase a ScanStation 2 and Cyclone software licenses They have successfully deployed the ScanStation 2 and performed numerous scans on new and old Bay Bridge structures and other project sites as shown in Figure 5 Currently District 4 1s using two ScanStation 2 scanners extensively on the Doyle Drive project Over sixty historical buildings and landmarks in the Presidio area were scanned This high profile project 1s currently the largest use of laser scanners in Caltrans Figure 4 Night scanning of the old Bay Bridge for the design and construction of the new Bay Bridge detour m a Old bi A XJ SA bridge Towers n Old bay bridge shear PIN Pr 4 d m Devil Slide Wade Figure 5 Map of District 4 laser scanning projects The deployment training in District 6 was the first laser scanning survey training class conducted by AHMCT and Caltrans Headquarter While it occurred in September 2007 prior to Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials the official start of this research project it is documented here as it significantly enhanced the results of the current research The training structure was slightly different from the above description The training was split into field crew training and point cloud post processing training For four days over ten District 6 surveyors were taught to
11. their gracious assistance The authors also acknowledge the dedicated efforts of the AHMCT project team members who have made this work possible XV Copyright 2011 AHMCT Research Center UC Davis Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials CHAPTER I INTRODUCTION Background and Motivation Terrestrial 3D laser scanners TLS a new class of survey instrument have recently become very popular and are increasingly used in providing as built and modeling data in various applications including land surveying archeological studies architecture bridge structures and highway surveys These scanners measure thousands of data points each point includes distance angle and reflected return signal power per minute and generate a very detailed point cloud data set The point cloud can then be post processed to create an exceptionally accurate and detailed 3D Computer Aided Design CAD model Consequently model information such as relative angle and length dimensions can be extracted from the resulting 3D surface CAD model Some of the data available with 3D laser scanners are difficult or impossible to measure using traditional surveying instruments Traditional survey instruments e g Total Station and Digital Level are limited to locating one point at a time In the traditional survey process surveyors particularly the rod man a
12. 4 Beran ji N Ai MR a gt ye A Ls 580 truck passing lane s 10 Rock slide ER AR 140 San J z l e an Jose h jo A LA b APG Devil s Slide SR U I DS 1 SRI Be u 2 at SRI 99 Fresnos ifornia Big Sur SR Tg Big Sur2 SR 1 g Traffic Way at US 101 v 5 Indian Historical Site T Los angeles ta a fe Kur Beach N Mast Bivd at SR Szy 805 at SR a MON a Figure 3 Map of Caltrans laser scan projects Some District 4 surveyors previously received training from Leica Geosystems in conjunction with Caltrans evaluation of an HDS 2500 laser scanner AHMCT provided District 4 with technical support and updates on the latest best practices and recommended workflow Since then District 4 surveyors used a ScanStation laser scanner in a few pilot studies They used AHMCT s ScanStation in two projects related to the new Bay Bridge detour construction In addition District 4 scanned the V bar of the main bridge column of the new SF Oakland Bay Bridge These jobs were made easier safer and faster using laser scanner vs Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials traditional survey methods The use of laser scanner in these projects allowed District 4 surveyors to prove to their management the value and effectiveness of the laser scanner as a survey instrument As a result District 4
13. 47 Perform Manual Change ei 47 Using a Pre configured Batch bat File eee LLL Leere eee e e eee eee eee ee eee es eaaet eee 47 Appendix F Troubleshooting Network Connection Problems with Scanstation or SCANSIANON oe PR 51 Appendix G Training Scripts for Applying Image Overlay from External Digital Camera EE EEE EZ PAEA 53 Appendix H Laser Scanning Equipment Package List eee esee eese eee eee eene nnne 57 EEE T z Go ii E E ac E e A EDU epa DR SOR EE GEE OW Abc OWA 57 Appendix I Honda EU2000i Generator Usage Instruction eese eee eene 59 Starting and Stopping Generator joa me eee aan anawa 59 Generator Maintenance cdn a ehren 59 vi Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials LIST OF FIGURES Figure 1 Working principle of phase based and time of flight 3D laser scanners eeeeree 2 PisuECZEOYCNAILWOFKNOWA GZ E 4 Figure 3 Map of Caltrans laser scan projects ee LSA O EE ESA 7 Figure 4 Night scanning of the old Bay Bridge for the design and construction of the new Bay Bridge detour 8 Figure 5 Map of District 4 laser scanning projectS ssoooooooooooooo000000000000000000000000000000000000000000000000000000000000000000000000 8 Figure 6 District 6 field practice training on
14. 6 30 92 Copyright 2011 AHMCT Research Center UC Davis Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials ABSTRACT This report documents the AHMCT research project Accelerated Project Delivery Case Studies and Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials The report body provides motivation and background information for fixed 3D terrestrial laser scanning along with the details for Caltrans District training and deployment The report appendices provide in depth material suitable for use in future Caltrans training deployment and on going use of 3D laser scanning including planning and scanning field work overlaying digital image and point cloud data point cloud registration point cloud post processing scanner setup and troubleshooting and an equipment packing list 111 Copyright 2011 AHMCT Research Center UC Davis Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials TABLE OF CONTENTS Table of Contents odis eite ee na y Lit Of T UTOS ere ee euere eins vii BAT EY cto NN ix Disclauer DISclOSUFE e E BRE M DNE A xi List of Acronyms and Abbreviations sasanka iii xiii AZCkHOWIedoImentsd aou tie vv adi o Revo ND edem talc esie UE xv Chapter T Introduction aisdi cete ete ease ate
15. Copyright 2011 AHMCT Research Center UC Davis Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials APPENDIX E NETWORK SETTING FOR CONNECTING SCANSTATION OR SCANSTATION 2 Perform Manual Changes 1 Right click on Local Area Connection and select left click Properties 2 Left click on Internet Protocol TCP IP and then left click on the Properties button as shown in the figure below General Advanced Connect using HE Broadcom NetXtreme 57xx Gigabit C This connection uses the following items ES Client for Microsoft Networks v JS File and Printer Sharing for Microsoft Networks r QoS Packet Scheduler Internet Protocol TCP IP a lt Install r Description Transmission Control Protocol Intemet Protocol The default wide area network protocol that provides communication across diverse interconnected networks Properties s Show icon in notification area when connected v Notify me when this connection has limited or no connectivity DK Cancel 3 Enter 10 1 100 100 as IP address 255 255 0 0 as Subnet mask and 10 1 1 1 as Default gateway Leave DNS server blank as shown in figure below After that left click on the Ok button see figure below General You can get IP settings assigned automatically if your network suppor
16. Highway 99 2222200ooooooooooooooooooo00000000000000000000000000000000000000000000000 9 Figure 7 District 11 field practice training at the Highway 805 and 905 interchange 10 Figure 8 District 5 Held practice Session a 10 Figure 9 External camera kit for panoramic photo 0000000000000000000000000000000000 0000000000 SSR 11 Figure 10 Example panoramic photograph at the Presidio and Golden Gate Bridge Doyle Drive approach 12 Figure 11 Example panoramic photograph District 11 Mast Boulevard at Highway 52 12 Figure 12 From point cloud to plastic physical model 22222220200000000000000000000000000000000000000000000000000000000000000000 13 LIaeure 15 Overall WOTKROW a R E dei ecd sace O A CAO 23 Fipure TA ScanStiti ni 2 packade io eee ri oodd 24 Figure 15 Display Meens O cone ee eee tick ti o deiade dO 26 Fic re 16 License m naser Gi ee Nies 26 Fisure 172 C vclone preferences zz aoc dodat cd ci nod wi RE 28 Figure 18 Adding a database for existing and new scan data ssssssssssssssssssssssssssssssssssnnsnssnnnnnnnnnnnsnnnnnssssnsnnnne 30 Figure 19 Add NEW SCANNER CSCA Add SSC 31 LIapure 20 Scanner IP address OCA OM zz oou 6i cei eis ie 32 LIapeure 2I Scanstation feature Ay OME cci CEO este 33 Figure 22 Measuring scanner height Ts 34 Ficure 25 ScanStation orientahlon deliniton iss kauen 36 Figure 24 ScanSt
17. Materials Laser Scanning Survey General Workflow Laser scanning survey may be divided into four phases planning scanning registration and QA QC and finally post processing Only the scanning phase is required to be performed in the field Thus laser scanning surveys generally reduce field time but the office post processing time is generally increased Figure 2 illustrates the general laser scanning survey workflow Register Point Cloud Generate Registration Error Report and Perform QA QC Post processing Point Cloud Data to Create Deliverables Perform Laser Scanning Survey in the Field Figure 2 Overall workflow Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials CHAPTER 2 LASER SCANNER SURVEY TRAINING AND DEPLOYMENT SUMMARY Laser Scanning Survey and Point Cloud Post processing Training In this research project AHMCT researchers provided technical support training and training materials in conjunction with Caltrans OLS Headquarters surveyor Kevin Akin Typically the training class lasted four days The first day focused on job planning control setup hardware setup and using the ScanStation to acquire data with the Cyclone scan module was well as the external camera kit Trainees received hand on experience in using the software and in hardware setup to scan a parking lot in the afternoon
18. anStation 2 laser scanners as well as licenses of Leica Cyclone and Trimble RealWorks Survey point cloud post processing software In support of Caltrans deployment of this new technology AHMCT researchers are developing laser scanning survey instructional materials and conducting training classes with Caltrans OLS surveyors to promote consistent and correct use workflow controls setup and QA QC process of 3D laser scanners throughout Caltrans Along with motivation and background and a record of the current Caltrans district training and deployment activities this research report contains a collection of instructional material developed under this research contract along with related materials from other sources Separate from this research Leica Geosystems has developed a comprehensive and detailed Cyclone software manual Thus the training materials in this report are supplemental to the Leica Cyclone beginner and intermediate manuals In addition this report provides detailed status of the current 3D Laser scanning training and deployment in Caltrans districts as well as district personnel feedback on the use of the equipment Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials Brief 3D Laser Scanner Overview The ground based or terrestrial 3D laser scanner is a recently developed instrument that uses advanced laser measurement technology
19. ase I Training and Materials EL RE ES NN N BRAIN unshared BRAIN unshared l a Traffic w H raffic way T 081356 EE Pul Traffic Way test El 08135b i aS El est m SHORTCUTS Cancel EZ Connecting to Scanner Click on Scanner and then Connect when the scanner is ready See Appendix E and Appendix F if Cyclone SCAN is unable to connect to the scanner Using dual axis level compensator 1 Check to see if dual axis level compensator is enabled by clicking Scanner and see if there is a check next to Enable Dual axis Compensator 2 Check if the Compensator is In Range by clicking Scanner and then Bubble Level 3 Note that using dual axis level compensator may be inappropriate in high vibration environments Taking picture using the internal camera Set the Field of View See Figure 23 for the scanner orientation definition Adjust the camera exposure by clicking Image and then Image Exposure Adjust the exposure time in milliseconds Click on the Image button at the lower right hand corner of Cyclone Scan Control 2o px 35 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials 90 Deg Vert 22 5 Deg Vert 32 Deg Vert 360 Deg Horz Rotation 45 Deg Vert 180 Deg Horz Mark Figure 23 S
20. ation and ScanStation 2 external camera kit ccccccsssssssssssssssscccccssccsscsccscssscsscccccssssssees 40 vii Copyright 2011 AHMCT Research Center UC Davis Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials LIST OF TABLES Table 1 Caltrans District laser scanning survey training dates for Phase 1 project 1X Copyright 2011 AHMCT Research Center UC Davis Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials DISCLAIMER DISCLOSURE The research reported herein was performed as part of the Advanced Highway Maintenance and Construction Technology AHMCT Research Center within the Department of Mechanical and Aerospace Engineering at the University of California Davis and the Division of Research and Innovation at the California Department of Transportation It is evolutionary and voluntary It is a cooperative venture of local State and Federal governments and universities The contents of this report reflect the views of the authors who are responsible for the facts and the accuracy of the data presented herein The contents do not necessarily reflect the official views or policies of the State of California the Federal Highway Administration or the University of California Thi
21. canStation orientation definition For detailed steps of scanning the area of interest importing control points navigating in Cyclone and field registration please refer to the Leica Geosystems High Definition Surveying Basic Training Manual sections 1 and 2 Based on our experience of common mistakes that users make the following are items to be mindful of 1 e these are worth double checking 1 When importing control points be careful with x y Northing and Easting ordering and unit selection particularly US Survey feet and feet 2 Don t forget to click Apply to commit your registration after calculating the registration error in the Field Registration setup step 3 Currently Traverse with ScanStation 2 1s not recommended for high accuracy Work e g pavement surveys In addition the user should take good field notes when the scanner is actively scanning Secondly the user should check the status of notebook computer and ScanStation batteries after 2 to 3 hours of use In general the scanner batteries run time is about 5 hours total when both batteries are being used at the same time The user should check the battery status often to minimize the risk of complete power loss to either the scanner or the notebook computer during a scan The typical Panasonic Toughbook CF74 battery run time is about 3 hours When batteries are low the Honda EU20001 generator can be used to charge notebook computer and ScanStation batteri
22. ck to Dynamic DHCP echo Please wait IP is now being set to DYNAMIC HOST CONFIGURATION PROTOCOL DHCP netsh interface ip set address Local Area Connection dhcp echo Done Pause network2ip_to_Dynamic bat file contents echo off 48 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials echo Setting your IP Address back to Dynamic DHCP echo Please wait IP is now being set to DYNAMIC HOST CONFIGURATION PROTOCOL DHCP netsh interface ip set address Local Area Connection 2 dhcp echo Done Pause 49 Copyright 2011 AHMCT Research Center UC Davis Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials APPENDIX F TROUBLESHOOTING NETWORK CONNECTION PROBLEMS WITH SCANSTATION OR SCANSTATION 2 e Check if the CATS network cable is connected at both ends notebook and scanner Some network cable connectors have become worn on the ScanStation 2 and the weight of the cable pulled the plug down causing connection loss e Check to see if the light at the network connector is illuminated o If not check for physical damage on the cable and connector o Re insert the connector into the scanner and computer to check for poor connection o Replace the CATS cable o Re check the LED light next to RJ45 connector to see if it
23. ck to make sure the scanner is unlocked The scanner cannot function unless it is unlocked and allowed to complete the bootup sequence O O O O 51 Copyright 2011 AHMCT Research Center UC Davis Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials APPENDIX G TRAINING SCRIPTS FOR APPLYING IMAGE OVERLA Y FROM EXTERNAL DIGITAL CAMERA Video can be viewed at http hardhat ahmct ucdavis edu mediawiki index php LaserScanResources Welcome to the UC Davis Advanced Highway Maintenance amp Construction Technology Research Center s Leica ScanStation and Cyclone Software Training Series This material was developed in conjunction with the Caltrans Office of Land Surveys under on going research My name is Kin Yen In this clip we will discuss overlaying panoramic digital image from external digital camera onto point clouds For more information please contact us using the information at the end of this video clip Show a cover slide with AHMCT info AHMCT and CT logo Date the video topic picture of ScanStation and Cyclone screen shot Detail written instructions are also available in the file Manual for External Camera Workflow pdf In this tutorial we will discuss overlaying panoramic digital image from external digital camera onto point clouds 1 ScanStation has a built in camera to take digital image that automatically alig
24. ckage To Do list before going to the field Locate all equipment on the equipment list Fully charge batteries o ScanStation batteries 2 or more o Panasonic Toughbook recommended or other notebook computer batteries 2 Gas for Honda Generator Standard safety equipment including hard hats safety vests safety goggles boots water etc Voice radios 24 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials e Check weather forecast for rain wet pavement snow high winds and fog Scanning Phase Scanning phase work includes setup and break down of the hardware as well as operating the Cyclone scanning software to acquire all the necessary data for post processing This section provides some basic Cyclone setup information It is supplemental to the both Leica Geosystems High Definition Surveying Basic Training Manual and the High Definition Surveying Intermediate Training Manuals If you are a Caltrans surveyor please contact Kevin Akin kakin dot ca gov Generally laser scanning using a ScanStation 2 has the following steps 1 Setup and power up the Leica ScanStation 2 2 Power up the notebook computer and connect the Ethernet cable from the notebook computer to the ScanStation 2 3 Run Cyclone Scan to Connect to ScanStation 2 4 Check to see if the dual axis level compensator is on and within range 5 Scan th
25. d Open ModelSpace if the user would like to view the final registration immediately Alternatively the user can click on Registration and Create ModelSpace to only create the ModelSpace without opening the viewer Tips in Identifying and Fixing Registration Errors Registration error report Disabling control points Fixing bad controls and registrations Disable resection station point Check for incorrect target height due to using the wrong twin target top or bottom Look for error 2 15 m 7 054 ft 0 45 m 1 476 ft and 1 7 m 5 577 ft 2 15 m is the extended top target height 0 45 m 1s the extended bottom target height and 1 7 m 1s the height difference between the top target and bottom target on the twin target pole o Fixthat in scan control Open up the scan control open up the dummy scanner or the actual scanner redo the field setup or edit target height in the register e Start with the first ScanWorld and register it It the registration is adequate add another ScanWorld and register those two Keep adding and registering until the problem ScanWorld is identified e Register the problem ScanWorld by itself and try to determine the problem e Open up control space of the ScanWorld to better understand the setup of each Scan World e ook for incorrectly labeled target points E g control point label appears twice at different location e Extreme large errors on all points usually means one of the control point
26. dWorx or Cyclone can be readily converted into a 3D PDF file using MicroStation The main advantage is to allow a wider audience to view the 3D data Deployment Challenges Lessons Learned The deployment of Leica Geosystems 3D laser scanning system has had varying degrees of success in different Caltrans districts By nature some deployment challenges are technological while some are institutional 13 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials District Specific Comments Challenges and Lessons Learned District I D1 DI has one experienced TLS user Eric Vance He has been using TLS for about 10 years He did not note many problems with it He has done 5 to 6 scanning projects in D1 He found that Equipment scanning speed has increased significantly since he started scanning Time in field 1s shorter than with traditional methods Time in office is longer However the office cost rate is lower and only needs one person A two person crew for scanning and another two person crew to survey other features that scanning does not pick up is a very efficient arrangement It is hard to determine man hole covers light boxes and similar features in the point cloud He has spent two months analyzing data so far from the downtown Willits scans People can become overwhelmed with the data in post processing He has used the T
27. e 3D laser scanner gives the user many measurement points at a shorter range while the Total Station provides the user with pin point measurement at lower speed but with longer range Even though the user may scan the area of interest with a high density scan the resulting 3D laser scanner measurement points may not necessarily lie exactly on top of the point of interest On the other hand the surveyor can use the Total Station optical sight to aim and measure the exact point of interest The useful range of a Total Station 1s generally a few times larger than that of a laser scanner Despite having shorter range than Total Station the 3D laser scanner can accurately position objects at over 1000 times the speed of a Total Station which allows it to quickly produce large amounts of survey data The resulting data set commonly referred to as a point cloud provides a realistic visualization of the features of interest and detailed three dimensional data for modeling volume calculation and angle orientation measurement results that are difficult to obtain using traditional survey instruments Using the 3D Laser scanner on projects with a large amount of detail allows surveyors to significantly reduce survey field time and results in more survey site detail reducing or eliminating the need to return to the field for additional measurements In practical laser scanner applications multiple scans at different locations are often required to captur
28. e area of interest 6 Acquire the registration target s measure HT Scanner Height calculate the registration errors and apply the registration 7 Disconnect the scanner within Cyclone 8 Break down the ScanStation 2 setup and move to the next setup location 9 Repeat setup to 8 The details of each step can be found in this appendix or Leica Geosystems High Definition surveying Basic Training Manual sections 1 and 2 Introduction to Cyclone Navigator Cyclone is Leica Geosystems HDS software composed of several modules including Cyclone SCAN Cyclone REGISTER Cyclone MODEL Cyclone PUBLISHER CloudWorx for MicroStation Cyclone II TOPO Cyclone VIEWER Pro and other modules that Caltrans does not currently use Each module requires its own license and the license file license dat or lic 1s located in the Cyclone installation folder the default is C Program Files Leica Geosystems Cyclone To display available licenses left click normal mouse click on Help in Cyclone Navigator window and left click on Display License as shown in Figure 15a Figure 15b shows the licenses available to the users Left click the Close button to close the Cyclone License window 23 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials ini x 2 Cyclone Navigator E File Edit View Configure Create Tools He
29. e main objective 1s to increase the usage of TLS Mark Turner Office Chief of Land Surveys indicated Deploy it Drive it all home Any new information regarding hardware and software improvements training materials and best practices and workflow will be made available at the AHMCT Laser Scanning Resources site http hardhat ahmct ucdavis edu mediawiki index php LaserScanResources 19 Copyright 2011 AHMCT Research Center UC Davis Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials REFERENCES l W Boehler and A Marbs 3D Scanning Instruments in The International Archives of Photogrammetry Remote Sensing and Spatial Information Sciences Corfu Greece 2002 2 J Hiremagalur K S Yen K Akin T Bui T A Lasky and B Ravani Creating Standards and Specifications for the Use of Laser Scanning in Caltrans Projects AHMCT Rept UCD ARR 07 06 30 01 Davis 2007 35 J Hiremagalur K S Yen T A Lasky and B Ravani Testing and Performance Evaluation of Fixed Terrestrial 3D Laser Scanning Systems for Highway Applications Transportation Research Record Journal of the Transportation Research Board 2098 pp 29 40 2009 4 G Jacobs Understanding the Useful Range of Laser Scanners Professional Surveyor Magazine 2004 5 G Jacobs Registration and Geo Referencing Professional Surveyor Magazine p
30. e of line of sight to key features and control targets due to buildings structures and vegetation The user should also review the equipment checklist see Appendix H to make sure no components are missing or damaged In addition the user should make sure all batteries two Leica ScanStation batteries and all notebook computer batteries are fully charged Register Point Cloud Generate Develop Deliverable d Requirement and n gt Scan Plan eport an Perform QA QC Post processing Point Cloud Data to Create Deliverable Perform Laser Scanning Survey in the Field Figure 13 Overall workflow Planning for a 3D Laser Scanning Survey Scan Plan considerations e Deliverable requirements 23 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials Scope of work Scanner location and control setup Aerial photo Digital Highway Inventory Photography Program DHIPP photos and Google Earth all help for this Scanner field of view Blockage of line of sight to key features or targets Maximum usable range 80 m to 90 m half the range if the pavement is new asphalt overlay Registration target placement 65 m 75 m max from scanner Extra target for QA QC Equipment Checklist See Appendix H Weather forecast check rain wet pavement snowing fog Figure 14 ScanStation 2 pa
31. e the entire survey site due to the site size exceeding the useful range of the laser scanner or the scanner s line of sight being obscured by structures in one or more of the scan locations Post processing of multiple point cloud data sets from various scan locations must be performed to combine and tie the data sets to an existing control coordinate system in order for the overall data set to be useful for surveyors Otherwise users may only extract relative positional information of objects within each individual point cloud This post processing process is commonly referred to as registration geo referencing 2 3 Limitations Laser scanner performance in real life applications is usually not as good as the stated manufacturer specifications due to a number of environmental factors that adversely affect performance Scanner performance and accuracy can be adversely affected by surface reflectivity and color edges temperature atmospheric conditions and interfering radiation such as bright lights or direct sunlight 1 Thick vegetation reduces the amount of useful information the scanner can collect by obscuring objects of interest In addition these scanners may not be appropriate for every application Like the Total Station a laser scanner requires direct line of sight to the points of interest Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and
32. ectural Feet Inches gt Imperial Types U 5 Survey Export Customizations Pressure Units Millibar Linear Units for LAS Exchange Meters Customize Hotkeys Customize Toolbars Object Preferences Preferences Open the Edit Preferences digkog to edit user preferences a 4 b Edit Preferences Modeling ModelSpace Scan Point Cloud Initialization Level Units Resolution Measurements Registration Fitting s nM Defauls Imperial Types U S Survey English Station Notation No A4lignment Offset Notation amp ngular Units Degrees Temperature Units Fahrenheit Pressure Units inches of Mercury 0 C Coordinate Labels x Y Z Linear Units for LAS Exchange Meters c Figure 17 Cyclone preferences Adding a Database Cyclone Navigator for Existing or New Data Cyclone stores all data control points LiDAR point clouds and photos in a database file with extension imp To access the data the user must add a link to the imp database file in Cyclone Navigator In addition the user must add a new database with Cyclone Navigator before a new scan job begins To add a database in Cyclone Navigator 1 Left click on Configure in Cyclone Navigator window and left click on Databases as shown in Figure 18a 2 Left click on the Add button in Configure Database as shown in Figure 18b 3 Le
33. er Network Connection is taken up by the Bluetooth network In this case use network2ip to scanning ip bat instead network2ip to Dynamic bat changes the network setting back to DHCP If you are an experienced user you can use ipconfig all on the command prompt to see the network settings Alternatively you can go to network properties to see the setting changes made by the batch file network ip to scanning ip bat file contents echo off echo Configuring wire network connection for ScanStation to following settings echo IP Address 10 1 100 100 SMask 255 255 0 0 echo Gateway 10 1 1 1 echo Please wait IP is now being set to STATIC netsh interface ip set address name Local Area Connection source static addrszl10 1 100 100 mask 255 255 0 0 netsh interface ip set address name Local Area connection gateway 10 1 1 1 gwmetric 1 echo off pause network2ip to scanning ip bat file contents echo off echo Configuring Network Connection 2 IP address for ScanStation Connection echo IP Address 10 1 100 100 SMask 255 255 0 0 echo Gateway 10 1 1 1 echo Please wait IP is now being set to STATIC netsh interface ip set address name Local Area Connection 2 source static agar 10 4 100 100 masks255 255 04 0 netsh interface ip set address name Local Area connection 2 gateway 10 1 1 1 gwmetric 1 echo off pause ipchange to dynamic bat file contents echo off echo Setting your IP Address ba
34. er window after highlighting the scanner by left clicking on the scanner name under the scanner column Figure 20 Scanner IP address location Step 1 ScanStation or ScanStation 2 setup ScanStation and ScanStation 2 setup is very similar to a Total Station The user can use known backsight resection or traverse methods to geo reference each scan setup Traverse is not recommended for pavement surveys Setup scanner See ScanStation 2 manual for detailed instructions l 2 Setup the dual clamp tripod It should be elevated as high as possible Setup and level the tribrach Tighten all the tripod screw and lever clamps and place sand bags on each tripod leg Set the ScanStation on the tribrach and lock it in place by flipping the tribrach locking lever Unlock the ScanStation by pulling out and rotating counter clockwise the scan head locking lever located at the back of the scanner as shown in Figure 21 The ScanStation will not boot up with lock engaged 32 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials Top window cover ScanStation bubble level Ethernet connection gt ee p Dual power 2 E EX Y e connection 1 Quick Scan set button ScanStation head locking lever Fo Tribrach locking lever Figure 21 ScanStation feature layout 6 Remove scanner window cover
35. es and power the ScanStation using AC adapter It is a good practice to keep one battery connected to the scanner in case of generator failure due to running out of fuel or 36 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials other causes The user should backup the data to portable drive USB Drive or on DVD R at the end of the day The details of ScanStation 2 setup break down steps can be found in the ScanStation 2 user manual 2T Copyright 2011 AHMCT Research Center UC Davis Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials APPENDIX B OVERLA Y IMAGES FROM EXTERNAL CAMERA Introduction See Manual for Cyclone External Camera Workflow PDF Link to this file is available at http hardhat ahmct ucdavis edu mediawiki index php LaserScanResources gt ADA General Workflow Take pictures using pano fixture and digital camera Typically 12 pictures per scan setup i e every 30 degrees Optionally one extra photo with camera facing upward Download photo and group each scan position s photos into a different directory Stitch all photos together into a single rectangular panoramic image using PTGui Convert rectangular panoramic image into six cubic images using Pano2QTVR The user should consider newer tools are
36. esearch Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials District D6 The right software for end users is needed Scott Rhinehart of D6 found that D6 surveyors have done one project on HW Y99 Surveyors are still exposed to traffic and an attenuator truck could block the scanner FOV Leaves amp debris in gutters are a problem for determining the feature break line On one project the gutter flow line was obscured by debris The crew had to tie in FL by conventional means Scanning should be used in appropriate jobs such as a bridge site survey It should not be used for day to day purposes Their crews need more practice District D7 James White of D7 noted that D7 surveyors have done one slide project at HWY39 for Geotech D7 has one person Carol Puszert doing post processing Having an office technician for post processing 1s critical since not many surveyors want to sit in front of point clouds all day They must find the right person to do the office portion District D11 Ned Salman and Chelsie Hopkins of DI1 commented that D11 has scanned a couple of bridge sites and one archeological site They would need additional refresher class training Their slow computer hampered initial post processing Computers were slow and kept crashing This may be due to the graphic card driver settings or the driver itself They are happy with scann
37. esk possess great computer skills are detail oriented understand the final deliverables and are able to work independently and accomplish a task to achieve successful deployment of this new tool Finally the 3D laser scanning crew size must be small for an efficient operation Through this deployment process we found that suitable projects for 3D laser scanning are rock slides steep embankments bridge structures and historical preservation Pavement survey is often better done with traditional survey means Despite the noted setbacks and difficulties we found that the deployment of 3D laser scanning technology is progressing well based on experience in deploying other new and innovative systems in Caltrans In Caltrans as in any large and diverse organization deployment of new technology will take time patience and continuous effort The overall project objective has been met However work remains to complete the deployment to other Caltrans Districts and overcome deployment challenges this work continues under a Phase 2 research effort Future Work These findings and comments echo other 3D laser scanning system users feedback and are not unique to Caltrans or the Leica Geosystems HDS scanner and software New software is available that promises better post processing data extraction A few new 3D laser scanners e g Leica Geosystems C10 and Riegl VZ400 show potential for significant reduction in field work time They are smaller l
38. ex scenes and large construction projects which are well suited for 3D laser scanning while making survey with traditional methods difficult District 6 and 11 surveyors are comfortable with data acquisition in the field with the ScanStation However they find that post processing is difficult and time consuming to extract data for final deliverables This is in part related to their current computers most of which are inadequate to handle these massive point cloud data Thus the software runs very slow and crashes often leading to user frustration Their workstations should be upgraded Caltrans Headquarters procured new workstations for point cloud post processing however lead time was long In addition these district users found that large time and resource investment 1s required to learn this new tool Based on the user feedback Caltrans Headquarters Leica Geosystems and AHMCT researchers continue to take steps to mitigate these deployment challenges New powerful workstations dedicated for point cloud post processing are now available to some of the district surveyors in their offices Leica Geosystems has continue to add new tools automated and semi automated and better workflow documentation to simplify data extraction The software and hardware are still in their infancy Revised or new software and hardware will better address these deployment challenges Still the districts must find or cultivate personnel who enjoy working at a d
39. f Report and Period Covered California Department of Transportation Final Report PO Box 942873 MS 83 January 2008 June 2008 Sacramento CA 94273 0001 14 Sponsoring Agency Code Caltrans 15 Supplementary Notes 16 Abstract This report documents the AHMCT research project Accelerated Project Delivery Case Studies and Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials The report body provides motivation and background information for fixed 3D terrestrial laser scanning along with the details for Caltrans District training and deployment The report appendices provide in depth material suitable for use in future Caltrans training deployment and on going use of 3D laser scanning including planning and scanning field work overlaying digital image and point cloud data point cloud registration point cloud post processing scanner setup and troubleshooting and an equipment packing list 17 Key Words 18 Distribution Statement 3D Laser Scanning Accuracy Precision No restrictions This document is available to the Resolution LID AR Surveying Design Training public through the National Technical Information Deployment TLS Service Springfield Virginia 22161 20 Security Classif of this report 20 Security Classif of this page 21 No of Pages 22 Price Unclassified Unclassified 75 Form DOT F 1700 7 8 72 Reproduction of completed page authorized PF V2 1
40. ft click on the button next to Database Filename field 1n Add Database as shown in Figure 18c 28 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials Select the file location To create a new database file type in a filename with imp at the end in the File name field of the Create Select a Cyclone DB window as shown in Figure 18d In the case of accessing an existing Cyclone database file select left click the file After that left click on the Open button as shown in Figure 18d The Database Name field in the Add Database window will automatically fill in using the filename The user may change it by typing in the field Left click on the OK button to complete the add database process as shown in Figure 18d Lastly left click on Close button to close the Configure Database window Inside the Configure Database window Figure 157 the user can also perform the following operations to an individual database by first highlighting the database with a left click on the database name as shown in Figure 18f To remove the link between Cyclone Navigator and the database file and keep the imp file left click on the Remove button To remove the link between Cyclone Navigator and the database file and delete the imp file left click on the Destroy button To reduce the size of the database file left click on t
41. ger Spare CATS5 network cable s e One tool bag with tape measure Ethernet cables power extension ScanStation battery chargers 2 power cable 2 and AC adapter One carrying case with two Twin Target Poles Two Twin Target pole tripods Honda EU20001 Generator Sandbags for scanner and target tripods O O O O d 57 Copyright 2011 AHMCT Research Center UC Davis Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials APPENDIX I HONDA EU2000I GENERATOR USAGE INSTRUCTION Starting and Stopping Generator See http www hondapowerequipment com pdt manuals 3 170701 O0 pdf Generator Maintenance See http www hondapowerequipment com pdf manuals 3 170701 O0 pdf 59 Copyright 2011 AHMCT Research Center UC Davis
42. he Compact button To improve Cyclone performance when opening that database file left click on the Optimize button To make the database invisible in the Cyclone Navigator window left click on the Vv next to the database name This operation helps reduce the clutter in the Cyclone Navigator window To make the database visible again left click on the empty square box next to the database name 20 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials AIN unshared Databases sl 0 Traffic Way 081356 J Cyclone Navigator File Edit View Configure Create Tools Help Remove fig 08135b ji SHORTCUTS SCANNERS xt Jl Dummy Scanner B Traffic way Open the Configure Databases dialog to manage the Cyclone databases b a Create Select a Cyclone DB Look in E test tek Fs My Recent Documents Desktop My Documents Database Hame r Database Filename ES My Computer Add Database EC Lx mro File name test imp Y Oper Cancel Newek p Files of type Cyclone DB imp z Can d c cel 7 2 Configure Databases on BRAIN unshared xl serve BRAIN unshared Databases Add Traffic Wary 081356 Remove Destroy Compact Add Database Database Mame test
43. ighter and can be run without a laptop computer In addition their internal batteries are smaller and lighter with longer life These changes may overcome some of the initial technological challenges and improve overall efficiency of 3D laser scanning surveys Future work includes 18 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials e Conducting training in Districts 1 2 3 7 8 10 and 12 updating training materials and exploring means to speed up point cloud post processing e Marketing new deliverables to survey customers management to enlist their support for this new technology e Upgrade CAD workstations network and servers for District offices e Creating a laser scanning user group in Caltrans DI and D4 like the user group idea D4 likes to meet in person but GoToMeeting or similar webinar seems to work well for everyone e Creating stationary and mobile laser scanning guidelines in the Survey Manual Currently a draft of Chapter 7 of the Survey Manual has been sent to the laser scanning Technical Advisory Group TAG and circulated externally When complete the availability of guidelines for using TLS should be advertised e Developing automated methods of filtering and extracting data from point clouds e Arranging refresher or additional scan classes as needed for districts that have already been trained Th
44. indow 4 Finally left click on Close button to close the Configure Scanners window 2 Cyclone Navigator Bm x File Edit View Configure Create Tools Help Servers Databases e Configure Scanners Scanner __ Morel__ actress d 1 20 BRAIN unshared B Traffic waj i f 081 35b Be a SHORTCUTS B a SCANNERS bee JA Dummy Scanner Dummy Scanner ScanStation 0 0 0 0 Open the Configure Scanners dialog to add remove and edit scanners 2 a b 6 Configure Scanners IP Address Dummy Scanner ScanStation 0 0 0 0 Caltrans Scanner 2 5canstakion 10 1 100 130 6 Add 5canner Gg x Scanner Model ScanStation z Scanner Mame Caltrans Scanner 2 IP Address 10 1 100 130 LK Cancel Figure 19 Add a new scanner c d e To make the scanner invisible in the Cyclone Navigator window left click on the y next to the scanner IP address in the Configure Scanner window Figure 19d This operation helps reduce the clutter in the Cyclone Navigator window To make the scanner visible 31 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials again left click on the empty square box next to the scanner IP address Configure Scanner window To remove a particular scanner in Cyclone Navigator permanently left click on the Remove button in the Configure Scann
45. ing and data gathering They have a hard time trying to extract data from point clouds 16 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials e More scanners would help as the district then would not have to wait for one giving added flexibility Summary of Challenges and Lessons Learned Some of the key challenges include e Point cloud post processing software has a steep learning curve and the associated skills have a short shelf life In addition users found that the software skills that they have invested time and resources to learn are quite perishable i e the skills decay without regular use e Existing computers and servers in the district offices are ill equipped for handling and processing the huge data sets Additional investment will be needed to store and process point cloud data e The optimal 3D laser scanning workflow and crew structure and size does not fit well with existing District survey crew size and structure 3D laser scanning survey workflow favors small crew size two people Typical Caltrans crew size is three to four e Moreover while some survey customers may find the point cloud data interesting they don t know what to do with the point cloud and or 3D data e The ScanStation hardware package is large heavy and bulky compared to other survey instruments The first two generations of laser sca
46. int cloud can then be converted to a mesh surface model and a 3D printer can use this model to create a plastic scale replica of the object Figure 12 illustrates the general concept The top image is a snapshot of a point cloud generated from scanning a historically significant American Indian site The middle image is the computer generated mesh surface model derived from the point cloud The bottom image is the final plastic model created by a 3D printer The model gives archeologists a better understanding of the site and a tool to effectively communicate to others about the site 12 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials Figure 12 From point cloud to plastic physical model Another new deliverable made possible by the 3D laser scan point cloud is a 3D Portable Document Format PDF file Previously CAD models generated from survey data could only be easily viewed in CAD software Thus the end users data customers needed CAD software installed on their computer to view the CAD model In addition they had to learn to use the CAD software package Now Adobe has enabled CAD models to be embedded into a PDF file allowing users to view and interact with CAD models using a free PDF reader Furthermore the current version of MicroStation can export CAD models directly to 3D PDF Thus CAD models extracted from point clouds via Clou
47. is on e Check if the RDY indicator light on ScanStation center LED is on green e fnot o Is the ScanStation ScanStation 2 power on o Ifthe RDY light is blinking yellow check to see if the scanner is unlocked o Ifitis not unlocked power down the scanner unlock it and then power it on o Ifitis unlocked wait for the RDY light to go green e Ifthe RDY indicator light on ScanStation center LED is on green then check the computer setting o Move mouse to Start gt Run type CMD to launch a command prompt o Type ipconfig at the command prompt You should see the following appear under Local Area Connection LB Address uu ow gk oh c me ee oe AO c bL00 100 Subnet Mask s a s e S S s 6 23 2552557070 Default Gateway 5 m qo PESOS o If any ofthe setting do not match reconfigure the computer network connection for scanning see Appendix E e Then try pinging the scanner if the COM light is on Green using the ping command For example if your scanner ip address labeled on the ScanStation is 10 1 200 1 e Type ping 10 1 200 1 on the command prompt e If you see Request timed out it is likely caused by one of o Computer not connected to the scanner Computer network setting incorrect Wrong scanner IP address used Selected the wrong scanner to start Cyclone SCAN ScanStation is performing self test e The Scanner is connected to the computer but it will not begin scanning o Che
48. lp Cyclone License x Licensed M Choudw orx Pra for AutoCAD Mode locked 848 day s left Cloud ors for MicroStation Mode locked 848 dau s left Cyclone MODEL Hode locked 848 day s left pg Cyclone PUBLISHER Mode locked 848 dafs left AP BRAIN unshared Display License p Luclane REGISTER Made lacked 848 dav s left m Contents Sse Defect Report eee User Feedback Cyclone 5 CAM Node locked 848 day s left Cyclone II TOPO Made lacked 848 day s left Cyclone VIEWER Pro Mode locked 848 day s left Traffic waj H 087 35b 28 SHORTCUTS About Cyclone SCANNERS s A Dummy Scanner License Manager E Uninstall Close E Display License information about Cyclone E b a Figure 15 Display license If the Cyclone installation uses a license server the user should check out only the specific licenses to be used during the session For example if the user only plans to do modeling work they should only check out the Cyclone MODEL license thus leaving Cyclone REGISTER for others to use This is critical if the number of licenses is small Configure the licenses to be checked out for the session 1 Left click on Help in Cyclone Navigator window and Left click on License Manager as shown in Figure 16a 2 If Yes appear in the Available column of the Cyclone License Manager Figure 16b the License available to the u
49. n Figure 9 The digital camera 1s mounted in the vertical position and tilted up 15 degrees The pano mount is secured to a tribrach adapter through a precision machined spacer so that the 8 mm lens nodal point is aligned to the center of the ScanStation rotating mirror A series of detents click stops allow the user to turn and reposition the camera every 30 degrees quickly and easily take a series of 12 photos Each set of 12 photos can be stitched together resulting in a 33 MP panoramic image Example panoramic images are shown in Figure 10 and 11 These panoramic images can then be converted to six cubic images for Cyclone to import and overlay onto the point cloud In addition they can be converted to a QuickTime VR media file providing the point of view from the scanner The panoramic images including point cloud overlay have proven useful in identifying features and help post processing personnel better understand the setup and job site 11 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials Figure 10 Example panoramic photograph at the Presidio and Golden Gate Bridge Doyle Drive approach Figure 11 Example panoramic photograph District 11 Mast Boulevard at Highway 52 The 3D laser scanner and resulting point cloud data can enable new types of deliverables A 3D laser scanner can produce a dense point cloud of an object The po
50. n with resulting scan point clouds 2 External camera provides better quality images but require extra setup to combine the images align and overlay them to the point clouds 3 General workflow a Take 12 pictures every 30 degrees using the pano fixture and digital camera b Stitch the images into a single rectangular panoramic image using PTGui c Covert rectangular panoramic image to cubic images and QuickTime movies using Pano2QTVR d Aligning cubic images to point clouds in Cyclone In this video we will focus on stitching the images into a single rectangular panoramic image using PTGui Lets begin First we separate 1mages from each setup using the creation time stamp on file You may see the file creation time in Window File Explorer detail view shown here using file explorer with detail view JPG 1mage files taken at the same scanner setup point have file creation time within minutes of each other JPG Image files take at each setup are moved to separate file folders using the same name as the corresponding ScanWorld name Now we may begin the process of stitching the images into a single rectangular panoramic image using PTGui PTGui is a commercial software that cost about 100 See http www ptgui com for details There are many PTGui tutorials available online You may achieve similar results using free open source software called Hugin see detail at http hugin sourceforge net Hugin is a little more difficult
51. nners were slow however emerging commercial systems alleviate this aspect There is a lot of heavy and bulky equipment to carry around generally requiring a few trips back and forth from the vehicle to the instrument setup location e The setup and data collection takes too long e Long post processing time to final deliverables e Customers typically want the traditional deliverables e g 2D plots There has been a lack of demand from Structures the group most in need of the detailed products available from TLS technology e Some field crews say they can produce the traditional deliverables faster with conventional methods Successful TLS Deployment and Overcoming Some of the Obstacles By reasonable measures District 4 enjoys the most successful deployment They have done more projects with 3D laser scanning than other districts Their customer feedback has been positive In some cases Caltrans and AHMCT have generated interest 1n more extensive laser scanning use District 4 has had two dedicated surveyors working with 3D laser scanners for over 17 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials four years Their dedication and experience and support from management are vital to overcome the types of difficulty encountered by users in Districts 6 and 11 In addition many of their projects involve urban environments with compl
52. of the first training day In the morning of the second day of training after reviewing previous training material trainees practiced laser scanning in the field The field practice session can be carried out on other training days if the weather is not appropriate for scanning Training includes point cloud registration QA OC and troubleshooting of registration problems in the afternoon of the second day In the beginning of third day of training point cloud registration steps are reviewed After that trainees practice point cloud registration and solving common registration problems Instruction on point cloud data extraction with Cyclone begins in the afternoon of the third training day concluding on the last instruction day Instruction topics include e understanding the Cyclone modules Scan Register and Model and how they are accessed e using the seek and pick tool e unifying point clouds e clearing traffic noise within the point cloud e creating lines polylines patches cylinders cones spheres alignments and cross sections e using limit box and fence tool e performing bridge clearance measurements e working with Cyclone Virtual Surveyor e creating animation and exporting data to and importing from CAD and roadway design packages Caltrans also uses Trimble RealWorks to process point cloud data further details on the use of RealWorks is provided in related training course materials The Cyclone training
53. own in Figure 7 After the training District 11 surveyors independently conducted projects using the ScanStation 2 In one project they scanned a petroglyph a rock carving or inscription at a historically significant site see subsequent Figure 12 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials Figure 7 District 11 field practice training at the Highway 805 and 905 interchange In January 2008 Caltrans District 5 surveyors Neal Dickey Robert MacKenzie Richard Majernik Brian Meeks and Jonathan Walsh received training in operating a Leica Geosystems ScanStation 2 laser scanner and using Leica Cyclone point cloud post processing software Figure 8 shows the District 5 surveyors being trained to do field work with the ScanStation Figure 8 District 5 field practice session 10 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials Figure 9 External camera kit for panoramic photo New Deliverable External Camera Kit The AHMCT Research Center assembled two external camera kits for Caltrans surveyors to improve digital photographic 1mage quality for overlaying on the point cloud generated by the ScanStation The kit consists of a Canon SLR digital camera with a Sigma 8 mm fisheye lens mounted on a pano panoramic mount as shown i
54. p 30 37 2005 6 E J Jaselskis Z Gao A Welch and D O Brien Pilot Study on Laser Scanning Technology for Transportation Projects in Mid Continent Transportation Research Symposium Ames Iowa August 2003 7 T Schulz H Ingensand and M Steiner Laser Scanning and Noise Reduction Applied to 3D Road Surface Analysis in Proceedings of the FIG Working Week 2005 21 Copyright 2011 AHMCT Research Center UC Davis Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials APPENDIX A LASER SCANNING SURVEY PLANNING AND SCANNING Laser Scanning Survey General Workflow Laser scanning survey may be divided into four phases planning scanning registration and QA QC and finally post processing Only the scanning phase is required to be performed in the field Thus laser scanning survey generally reduces field time but the office post processing time is generally increased Figure 13 repeat of Figure 2 for convenience illustrates the general laser scanning survey workflow In the planning phase users examine the project deliverable requirements project limits and scope of work to determine the number of scanning setups the scanner setup locations and control point locations When developing the scanner setup and control locations the users consider the scanner instrument s field of view practical scan range and any blockag
55. r the Six Cubic Images onto the ScanWorld Point Cloud in Cyclone Rename cubic images manually or using renamer bat See HDS external camera workflow instructions at http software lgshds com public camera for detailed instructions Renamer bat bat file contents This bat file rename cubic map file output from pano2qtvr to cyclone cube nomenclature ren 0 799 pg ren 1 7P9 r pDg pen 2 109 Ds jpg zen 32g 4 79 ren 4 199 U pI ren 5 jpg d jpg 4 Copyright 2011 AHMCT Research Center UC Davis Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials APPENDIX C CYCLONE REGISTRATION Typical Registration Steps 1 Right click and select create and then Registration 2 Double click to open the registration 3 Click ScanWorld and Add ScanWorld 4 Select the ScanWorld and Known Coordinates control points and click gt gt and then OK 5 Right click on Known Coordinates and select Set Home ScanWorld Home ScanWorld is highlighted in bold 6 Click Constraint and then Auto Add Constraints 7 Click Registration and then Register 8 Examine errors and check for large errors 9 Accept the registration by clicking Registration and Create ScanWorld Freeze Registration 10 Final step is to click on Registration and Create an
56. re often exposed to all manner of environmental hazards including walking across the roadway exposed to high speed traffic climbing steep slopes and standing close to high speed traffic or other unsafe areas to place the prism or rod The use of reflectorless Total Stations has improved safety but due to large incidence angles on horizontal and vertical surfaces the measurements can be inaccurate Other DOTs and private contractors have used laser scanning in highway survey applications and found that it reduces lane closures decreases the risk of injuries and increases productivity 4 7 The resulting detailed 3D model allows engineers to extract all the required data in the office decreasing or eliminating the need for surveyors to return to the site for additional measurements Using 3D laser scanners can dramatically improve safety and efficiency over current survey methods and can produce a better product In related research 3 the California Department of Transportation Caltrans Office of Land Surveys OLS and the Advanced Highway Maintenance and Construction Technology AHMCT Research Center evaluated several terrestrial laser scanning systems including hardware software and overall workflow 2 The research project also produced a set of recommendations on laser scanning workflow quality assurance quality control QA QC procedures usage guidelines and data exchange methods Since then Caltrans has purchased three Leica Sc
57. rences 1 Left click on Edit in Cyclone Navigator window and left click on Preferences as shown in Figure 17a 2 Left click on the pull down menu on the top right corner of the Edit Preferences window and select Default as shown in Figure 17b The default selection is Session 3 Left click on Unit tab m the Edit Preferences window and left click on Linear Units as shown in Figure 17b Then left click on feet or other desired unit of choice if feet are the units selected make sure that the Imperial Type is set to U S Survey in the next selection box as shown in Figure 17c U S Survey Feet are by law the official type of foot unit to use in California 4 Left click on Apply or Ok button at the bottom to save the changes as the default 27 Copyright 2011 AHMCT Research Center UC Davis Field Use of 5D Terrestrial Laser Scanning in Caltrans Projects e Cyclone Navigator El x File Edit View Configure Create Tools Help Undo Redo B Gear UndolR Eda Cu Copy Paste un Paste Reference Paste Link Delete Rename Add Edit amp nmabatiors Customize Lookup Lists Import Customizations G Edit Preferences i x Phase I Training and Materials Modeling ModelSpace Scan Point Cloud Initialization Level Units Resolution Measurements Registration Fitting Default Session R Linear Units Feet Archit
58. rimble VX for land slides 1t does not work well for large landslide areas For this and similar applications a laser scanner is better CloudWorx plug ins for AutoCAD and MicroStation may work well for some customers who are familiar with CAD software This way the end users do mining of data in the software they are comfortable using District 3 D3 Matt Herbert of D3 found that D3 has not yet found a good project for scanning Their crew needs training on equipment and software It 1s good to do training in winter time when the workload is lower He will work with Kevin Akin to set up training in 2010 District 4 D4 Tom Taylor of D4 found that TLS 1s another tool in the toolbox 14 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials e Some people are more comfortable with traditional survey tools e Currently D4 is running two scanning crews two persons on each crew on the Doyle Drive project In general D4 has two dedicated field crews and two persons dedicated to office data post processing They plan to rotate office and field personnel to do cross training e Speed and power of computers are the most limiting factors One of their customers even provided a new workstation for TLS post processing because the customer 1s very supportive of the TLS technology While they have made some related upgrades they need
59. s ede ada asad ate en I Background and Motivation m 1 Brief 3D Laser Scanner Overview 2 IBlWsuII C 3 Laser Scanning Survey General Workflow 4 ecce ee e eee eee eee eee ee etae tette esee ess eaaet eee 4 Chapter 2 Laser Scanner Survey Training and Deployment Summary 5 Laser Scanning Survey and Point Cloud Post processing Training 5 Deployment SUUS 6i oe eo GO A 6 New Deliverable External Camera Kit sccccsccssscccsscsscvccswsssscsscacesdacessscssessccessssasssscesscscsdcacsscsaedsecess 11 Deployment Challenges Lessons Learned 222222200000000000000000000000000000000000000000000000000000000000 13 Kuture Work U 18 Referen OS acudieron eoi 21 Appendix A Laser Scanning Survey Planning and Scanning 000000sssesseseseeeeeeeeccees 23 Laser Scanning Survey General Workflow seoooooooooooo000000000000000000000000000000000000000000000000000000000 23 Planning for a 3D Laser Scanning Survey eee ee eee eee e eee e eese sees ss ss testet esee ess sss esee eeeee 23 Scann ns ip C mer ae 25 Introduction to Cyclone NavIgatOr 2 bada doc owiana dowod w rodeo pua E renes 25 Edit lt vclon Preferences 2 27 Adding a Database Cyclone Navigator for Existing or New Data
60. s has an incorrect coordinate e Get field notes draw a site plan 43 Copyright 2011 AHMCT Research Center UC Davis Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials APPENDIX D POINT CLOUD POST PROCESSING TRAINING TOPICS The AHMCT and Caltrans point cloud post processing training topics include Using the Seek tool Understanding and switching between Pick Multi pick and View modes Unifying point clouds after registration Clearing traffic noise after unify point cloud Creating a line or polyline alignment and cross sections Creating Hot Keys configuration Using Limit Box Using Fence Tool Creating and using Layer feature in Cyclone Using Cyclone Virtual Surveyor to export a CAICE tss file Refer to Kevin Akin s MS Word document and batch files Modeling patch cylinder and cone Making a rectangular patch and a circular patch Getting patch information Creating bridge Clearance Measurements Producing an animation o Steps 1 Create Object insert camera repeat to add more camera requires at least 3 cameras 2 Select camera s with multi pick tool at least 3 cameras 3 Create object animation create path set path 4 Animation editor 5 Set keyframes Exporting data to MicroStation and other CAD packages Point cloud data exchange between Cyclone and RealWorks Survey 45
61. s report does not constitute a standard specification or regulation Xl Copyright 2011 AHMCT Research Center UC Davis Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials LIST OF ACRONYMS AND ABBREVIATIONS Light Detection and Ranging Microsoft Root Mean Squared xili Copyright 2011 AHMCT Research Center UC Davis Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials ACKNOWLEDGMENTS The authors thank the California Department of Transportation Caltrans for their support in particular the guidance and review provided by Kevin Akin of the Office of Land Surveys The authors thank John Borden A J Burgess Robbie Dolan Richard Erskine John Fundus Tom Gillett William Jackson Robert McMillan Jimmy Pallares Chuck Tuomainen Dave Olander Mark Turner and C J Vandegrift for their valuable participation and contributions The authors also thank the District TLS users and technicians for their valuable feedback including Matt Herbert Chelsie Hopkins Carol Puszert Scott Rhinehart Ned Salman Nick Tatarian Tom Taylor Eric Vance and James White Moreover the authors express gratitude to Leica Geosystems and Trimble for their generous support in providing software licenses for training our work would not have been feasible without
62. sers to use The y in the Use column in the middle indicates that the particular module license will be checked out during the current session and thus unavailable to other users 3 To disable or deselect certain licenses and make available to others left click the v in the Use column next to the module license the V will disappear Now left click on the OK button to close the Cyclone License Manager window 4 The user must exit and restart Cyclone Navigator for the changes to take effect Cyclone Nawigator B x 6 Cyclone License Manager X Cyclone MODEL Cyclone SURVEY Cyclone SCAM File Edit View Configure Create Tools Help Contents wstaw Defect Report ss MAMMA User Feedback _yclone REGISTEF Cyclane PLUBLISHER Cyclone SERVEF Display License ee Traffic Way License Manager p H f 0891356 4 SHORTCUTS About Cyclone SCANNERS que Jj Dummy Scanner Cwclone VIEWER Don t ask me again Check Usage Lancel Configure the licenses obtained by Cyclone at b a Figure 16 License manager 26 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials Edit Cyclone Preferences Cyclone default installation preferences may not match with the Caltrans user preferences For example default units are metric To change default prefe
63. speed number of images and their resolution Once the PTGui finish aligning the images automatically you may examine the result in the Panorama Editor window to see 1f the images are aligned properly by checking whether the panorama image looks right In the rare cases where the PTGui auto alignment process fails the user will have to help PTGui align the images manually Examples of these failed case will be discussed in other training videos After seeing that the auto alignment result is acceptable click on Run Optimizer button on the left hand bottom of the Optimizer tab If you don t see the Optimizer tab left click on the Advanced gt gt button on the top right hand side in the Project Assistant tab to see more options and tabs After running the optimizer a new Optimizer Result window will pop up showing you how good the alignment is Click Ok to accept the changes Last step is to create the rectangular panorama image file by left clicking with the mouse on the Create Panorama tab The user may set the final panorama image file size by left clicking with the mouse on the Set optimum size button and select Maximum size The file output format should be JPEG jpg Then type in or select the file output location into Output file input box I recommend creating the panorama image in the same folder as the source images Lastly left click with the mouse on the Create Panorama b
64. to further upgrade their infrastructure of networks computers and servers e Education and training for their customers and their management is the key It enables them to provide new deliverables 3D and 4D modeling to their customers TLS glves surveyors a new way to be involved in other areas They enjoy great management support for adopting TLS They have sought out and marketed TLS to management to cultivate their support e Customer requests include as builts between contracts and visualization of buildings e Helikes the idea of Vanguard for Scanner e Cost benefit is good for HD video and scan point cloud models e D4 would like to evaluate 3D Reshaper software to process point clouds 3D Reshaper can find break lines automatically e TLS guidelines are needed District 5 D5 Nick Tatarian of D5 commented that e D5 has completed one project on a rockslide The crew felt the scanner was overkill for this project The job using TLS took longer than with Total Station e TLS survey takes about one day in the field two days in the office e tis time consuming to extract needed points e D5 is looking for the right projects for scanner use such as a bridge site survey However their bridge customers do not yet see it as a great tool e D5 found that customer acceptance and need for point clouds and related deliverables is currently lacking They will need top down buy in to move ahead 15 Copyright 2011 AHMCT R
65. to work with 53 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials PTGui Instructional Video In this video I will show you the steps in stitching images taken from the HDS external camera kit After installing and registering PTGui you will see this after launching PTGui You may then open a template file or configure the software setting manually In this demonstration video I will show how to configure the setting manually First left click 1 Load Images button in the Project Assistant tab go to the folder where the 1mages are located and select all image files using the mouse and or holding down the shift or ctrl key when left clicking on the files After that left click on Open button If there are duplicating or bad images you may remove it by selecting the image by left clicking with the mouse on the image in the Source Image tab and then left click on the Remove button at the bottom of the Source image tab to remove any unnecessary image If you are unsure of whether any image is a duplicate you may leave them in The software will use them all automatically and adjust for it The second step is left click on 2 Align images button in the Project Assistant tab The software will attempt to align all the images automatically This process may take a few minutes depending on the CPU
66. ts this capability Otherwise you need to ask your network administrator for the appropriate IP settings C Obtain an IP address automatically Use the following IP address IP address 10 1 100 100 Subnet mask 25h 255 D 0 Default gateway id it a sal Obtain DNS server address automatically f Use the following DNS server addresses Preferred DNS server Alternate DNS server z s Advanced OK y Cancel 4 Left click on the Ok button in the Local Area Connection Properties window Using a Pre configured Batch bat File Double click on the file named network ip to scanning ip bat Or network2ip to scanning ip bat To change back to Dynamic Host Configuration Protocol DHCP double click on ipchange to dynamic bat These batch files are ASCII text files with bat file extension the contents of the batch files are shown below Normally you would use the network ip to scanning ip bat file to change the IP address setting for connecting to ScanStation such as the notebook at Fresno Note that the Toughbook CF74 that we have for 47 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials ScanStation 2 has a slightly different network setting the 10 100 1000baseT Ethernet appears as Network Connection 2 instead of Network Connection as on most comput
67. use the ScanStation to collect data in the field at Highway 99 and Avenue 12 At the same time a different group of surveyors were taught to use Cyclone in the office The Highway 99 pavement was freshly paved black asphalt which due to lower reflectivity effectively cut the practical ScanStation scan range in half The survey work speed was about 0 6 to 0 75 miles per day as opposed to a more typical 0 75 to 1 miles per day In addition the crew size at the work site was about 7 to 8 surveyors It was quickly apparent that laser scanning survey was less efficient and slower than traditional means in this arrangement Nevertheless the field work of the project was nearly completed at the end of the fourth day This first session also provided valuable lessons in conducting the training as reflected in the revised approach used for subsequent training Figure 6 show the pilot project worksite and District 6 surveyors being trained EE yg Figure 6 District 6 field practice training on Highway 99 In June 2008 Caltrans District 11 surveyors Chelsie Hopkins Jason Webb and Dave Olander received training in operating a Leica Geosystems ScanStation 2 laser scanner and using Leica Cyclone point cloud post processing software from AHMCT Research Center and Caltrans Headquarters personnel District 11 San Diego surveyors used a Leica ScanStation 2 to survey the California Highway 805 and 95 interchange during the second day of training as sh
68. utton This final process could take several minutes Summary In this video we show you how to use PTGui to stitch together 12 images taken with a digital camera on a pano fixture The resulting rectangular panoramic image will be used to convert to six cubic images and QuickTime movies using Pano2QTVR These six cubic images are then imported into Cyclone for point cloud image alignment A different video will show these other process If you have any questions or suggestions please contact me Kin Yen or Kevin Akin End of video Contact information name email phone Kin Yen 54 Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials ksyen ucdavis edu 530 754 7401 Kevin Akin Kevin akin dot ca gov 916 227 7650 Video can be viewed at http hardhat ahmct ucdavis edu mediawiki index php LaserScanResources 55 Copyright 2011 AHMCT Research Center UC Davis Copyright 2011 AHMCT Research Center UC Davis Field Use of 3D Terrestrial Laser Scanning in Caltrans Projects Phase I Training and Materials APPENDIX H LASER SCANNING EQUIPMENT PACKAGE LIST Items Leica ScanStation 2 and transport enclosure Leica Tripod with double clamping system Two ScanStation Batteries Panasonic Toughbook recommended or other notebook computer with extra battery data backup hard drive mouse notebook case AC amp 12VDC char

Accelerated Project Delivery - ahmct

Contents

Download Pdf Manuals

Related Search

Related Contents