FRS Discovery System OCX Control Reference Manual - I-Cube
Contents
1. Enroll Failure Face Enroll Success Reenroll Verify Failure Face Verify Success Face Classified Face Unknown The information displayed for each event is listed as follows Log ID number Time and Date User Name Client computer name Activity Type Facilities provided on the event viewer screen provide the following capabilities Multiple document display of event lists Import Export of events Printing of event lists Copying of the JPEG image recorded for each event Filtering of events Further information regarding the Discovery event viewer screen is provided in Section 3 5 of the Discovery manual The event viewer screen is available on the Discovery Server only Discovery OCX e 8 Copyright O 2004 Acsys Biometrics Corp All Rights Reserved 2 6 ShowOptionsDialog Displays the Discovery Options dialog The Options dialog allows the user to modify operational settings for the Discovery System Function Prototype ShowOptionsDialog Remarks The options dialog varies slightly between Client and Server installations The following groups of settings provided within separate tabs of the dialog are provided for the Discovery System as follows Client Machine Server Machine General General Enrollment Enrollment Tracking Tracking Classify Classify Verify Verify Image Filter Image Filter Extensions Extensions Training Discovery OCX e 9 Copyright O 2004 Acsys Biome2. EE eege EE Ee MA dE Gleef el ele eet re TEE Geet ele EE RECOQMIEONNAIM Gs EE Kee EN GE an EECH TEE EIERE EA TrackCO INE iaa TRAC EMU ai Na MAA al Discovery OCX ei Copyright O 2004 Acsys Biometrics Corp All Rights Reserved 3 1 21 3 1 22 4 OCX EVENTS Vi KT 26 DIS MOOS tasas 26 Class SUCCESS arar 28 V 28 EVO SUCCESS a EE EE EE 28 Track MS sina ret tera ia ai 29 EE erent a nce mca a E 29 Re aa no aa a cata 29 Classify TIME air aurait 30 A danimenastenten animent 30 A A one ten 30 ClientConnected secoirinaisa ari ais 30 Discovery OCX e ii Copyright O 2004 Acsys Biometrics Corp All Rights Reserved 1 Introduction Discovery OCX e 1 Copyright O 2004 Acsys Biometrics Corp All Rights Reserved The Discovery System OCX interface provides a general purpose application development platform for the Acsys FRS technology This OCX interface allows the developer to integrate the FRS technology into a wide range of deployments including access control monitoring and surveillance time and attendance and personnel security related fields This Discovery system is based upon a Client Server architecture whereby the Server application generates and stores all biometric templates and these are subsequently distributed to one or more Client applications The Client application as well as Server performs facial tracking enrollment verification and classification operations Client applications are fully funct
3. FALSE User ID entered through the function parameter UserlD User ID number for the individual that is being verified Remarks The verify operation performs one to one identification In the event that the verify threshold is exceeded the VerifyEvent is triggered The individuals identity may subsequently be returned using Recognition D and RecognitionName and the recognition confidence is returned using RecognitionConfidence 2 12 StopVerify Terminates the verify operation The verify operation is terminated automatically if either the verify threshold is exceeded or a verify timeout occurs Function Prototype StopVerify Remarks Following termination of the verify operation the tracking operation will remain active The tracking operation may be terminated using the StopTrack method Discovery OCX e 12 Copyright 2004 Acsys Biometrics Corp All Rights Reserved 2 13 StartEnroll Initiates the enrollment operation This operation is identical to clicking the Enroll button provided on the Discovery GUI Function Prototype StartEnroll DialogFlag As Boolean FilterFlag as Boolean UserID As String FirstName as String LastName As String maxCount As Long DialogFlag Determines if user ID is entered using the function parameter UserlD or entered manually through the verify dialog as follows TRUE User ID and name entered using the enroll dialog FALSE User ID and name entered through the function parameter list F
4. FRS Discovery System OCX Control Reference Manual Beta Release Mar 12 04 ACSY BIOMETRICS Copyright O 2004 Acsys Biometrics Corp All Rights Reserved All information in this User s Manual is proprietary except where indicated and cannot be reproduced or redistributed without express written permission from Acsys Biometrics Corp Acsys Biometrics Corp does not guarantee the accuracy of the information contained in this document Content is subject to change without notice Microsoft Windows and Windows 2000 Professional and Windows XP Professional are registered trademarks of Microsoft Corporation Intel and Pentium are registered trademarks of Intel Corporation InstallShield is a registered trademark of InstallShield Software Corporation TABLE OF CONTENTS 1 INTRODUCTION 2 OCX METHODS RRRRRARRARRRARAAA At RPPPPOO OU uN PUNEO 3 OCX PROPERTI ES 3 1 1 3 1 2 3 1 3 3 1 4 3 1 5 3 1 6 3 1 7 3 1 8 3 1 9 3 1 10 3 1 11 3 1 12 3 1 13 3 1 14 3 1 15 3 1 16 3 1 17 3 1 18 3 1 19 3 1 20 COME rar ad adas GCL mageSegment EE Kl EEN SHOW DatabaSeE diia AS E EADAE aA GEREENT Eed O A IS AA Ai ce ShowOptionsDialog diia Ai Startliracki no iria A rm a a nn a a Stata nn aos EE ege D ARE eh EE OP id a AA A AO SLOPEMGOM seen dinar n AAA nn mt nr ie At en Close tMAENC Eegen ClOS S Mat HR EE Re Ee gan ENTOUS tas enee Ee Gala EE e TE le KEE elek ECK EENG Heady Te et EE
5. ace a value of 0 0 is returned Discovery OCX e 20 Copyright O 2004 Acsys Biometrics Corp All Rights Reserved 3 11 HeadZangle This property returns the degree of head tilt in the shoulder to shoulder direction for the specified tracker thread This property is read only Function Prototype HeadZangle trackerlndex As Long As Single trackerlndex Index to tracker thread The valid index range is 0 to 15 Remarks This value is expressed in degrees with 0 degrees corresponding to the head oriented in the vertical direction If the specified tracking thread has not currently located a face a value of 0 0 is returned 3 12 I mageFrame Returns a JPEG image of the full frame for the current capture device This property is read only Function Prototype ImageFrame As Variant Remarks This function executes on the client module and the image returned applies to the specified capture device Returned is a safearray of type BYTE containing the JPEG image of the full capture frame Discovery OCX e 21 Copyright O 2004 Acsys Biometrics Corp All Rights Reserved 3 13 RecognitionConfidence Returns the recognition confidence value for specified tracker thread during a classify or verify operation This property is read only Function Prototype RecognitionConfidence trackerlndex as Long As Single trackerlndex Index to tracker thread The valid index range is 0 to 15 Remarks The current recognition confidence value is ret
6. active Discovery OCX e 25 Copyright O 2004 Acsys Biometrics Corp All Rights Reserved 3 21 VerifyState Returns the current state of the classify operation This property is read only Function Prototype VerifyState As Boolean Remarks This function returns a Boolean flag that indicates the current state of the verify operation as follows TRUE Verify is currently active FALSE Verify is not currently active 3 22 DisplayMode Two video modes are currently supported These are display of Discovery GUI application in full screen mode or display of video and tracking icon only with no GUI interface Function Prototype DisplayMode As Long Remarks This function is used to set or return a Long which establishes the display mode for the OCX control The three options provided are listed below 0 Display of captured video with tracking overlay and Discovery GUI shown in default full screen 1 Display of captured video with tracking overlay is enabled however display of the associated Discovery GUI is disabled The video display is sized to fill the control area and the display state is enabled or disabled using the OCX control show hide properties Discovery OCX e 26 Copyright 2004 Acsys Biometrics Corp All Rights Reserved 4 OCX EVENTS Discovery OCX e 27 Copyright O 2004 Acsys Biometrics Corp All Rights Reserved 4 1 ClassifySuccess Event triggered when a classification operation is active and th
7. cking threads is dependent upon the number of individuals that are currently being tracked by the system For instance if 3 individuals are currently tracked the number of active tracking threads will be 3 1 used for locating new individuals The user may adjust the maximum number of tracking threads deployed by adjusting the tracking properties within the Options dialog Discovery OCX e 24 Copyright O 2004 Acsys Biometrics Corp All Rights Reserved 3 19 TrackEnum Returns the thread ID numbers for the tracker threads that are operational in currently tracking faces This property is read only Function Prototype TrackCount As Variant Remarks The number of tracking threads is dependent upon the number of individuals that are currently being tracked by the system For instance if 3 individuals are currently tracked the number of active tracking threads will be 3 does not include the free thread that is used for locating a new individual The number of active tracking threads is determined by TrackCount The TrackEnum property returns a safearray of type Long containing the thread ID numbers 3 20 TrackState Returns the current state of the tracking operation This property is read only Function Prototype TrackState As Boolean Remarks This function returns a Boolean flag that indicates the current state of the tracking operation as follows TRUE Tracking is currently active FALSE Tracking is not currently
8. e facial image returned from any tracker thread exceeds the classify thresholds This event returns the tracker thread index and user ID number Function Prototype ClassifySuccess trackerlndex As Long UserID As String trackerlndex Index for the tracker thread that exceeded the classify threshold Userl D The ID number for the associated user 4 2 VerifySuccess Event triggered when a verification operation is active and the facial image returned from any tracker thread exceeds the verify threshold This event returns the tracker thread index and user ID number Function Prototype VerifySuccess trackerlndex As Long UserID As String trackerlndex Index for the tracker thread that exceeded the classify threshold UserlD The ID number for the associated user 4 3 EnrollSuccess Event triggered when an enrollment operation has been completed This event is generated only in the event that images have been captured and are saved for transfer to the FRS database regardless of whether the enrollment is terminated as a result of an enrollment timeout condition or programmatically terminated through the use of the StopEnroll method Function Prototype EnrollSuccess Discovery OCX e 28 Copyright 2004 Acsys Biometrics Corp All Rights Reserved 4 4 TrackFrame Returns an event if tracking is active through a call to StartTrack and a face has been located within the current frame This event is produced for every f
9. fy thresholds are exceeded the ClassifyEvent is triggered The individuals identity may subsequently be returned using Recognition D and RecognitionName and the recognition confidence is returned using the RecognitionConfidence property The set of closest matches to the tracked individual compared against those individuals currently enrolled within the FRS database may be returned using ClosestMatchesl D and ClosestMatchesName 2 10 StopClassify Terminates the classify operation This operation is identical to clicking the Classify button provided on the Discovery GUI while the classify operation is active Function Prototype StopClassify Remarks Following termination of the classify operation the tracking operation will remain active The tracking operation may be terminated using the StopTrack method Discovery OCX e 11 Copyright O 2004 Acsys Biometrics Corp All Rights Reserved 2 11 StartVerify Initiates the verify operation This operation is identical to clicking the Verify button provided on the Discovery GUI The option is provided to enter user identity through the function parameter list or activate the verify dialog for manual entry of user identity Function Prototype StartVerify DialogFlag As Boolean UserlD As String DialogFlag Determines if user ID is entered using the function parameter UserlD or entered manually through the verify dialog as follows TRUE User ID entered using the verify dialog
10. he same Discovery Server machine Function Prototype ConnectClient ServerName As String ServerName The name of the computer on which the Discovery Server resides Remarks The function should be called only from Discovery Client machines 2 2 Geti mageSegment Returns the facial image captured from the most recent video frame for the specified tracker thread The segmented image that is extracted from the video capture frame is returned by this function in J PEG format Also returned by this method are the coordinates of the face relative to the image segment that is returned Function Prototype Getl mageSegment trackerlndex As Long ByRef ImageBuf As Variant ByRef Coordinates As Variant trackerlndex Index to tracker thread The valid index range is 0 to 15 ImageBuf Returns a safearray of type BYTE containing the JPEG image of the tracked face Coordinates Returns a set of coordinate values that define the head position and tilt relative to the image segment returned by this function In the event that this variable is assigned a NULL pointer head coordinate values are not returned Discovery OCX e 4 Copyright O 2004 Acsys Biometrics Corp All Rights Reserved The following six floating point values are used to define head position and tilt HeadXaxis HeadYaxis HeadSize HeadXangle not required HeadYangle not required HeadZangle Remarks This function returns the segmented facial image ra
11. ilterFlag Determines if the filter dialog used for previewing and deleting enrolled images is activated following the enrollment operation as follows TRUE Filter dialog is enabled following enrollment operation FALSE Filter dialog is not enabled UserlD User ID number for the individual that is being enrolled FirstName First name of the user that is being enrolled LastName Last name of user that is being enrolled maxCount Sets the maximum number of images that are enrolled Remarks In the event that the filter dialog is disabled enrollment images may be manually reviewed and filtered using the edit database screen provided on the Discovery Server Discovery OCX e 13 Copyright O 2004 Acsys Biometrics Corp All Rights Reserved 2 14 StopEnroll Terminates the enrollment operation The enrollment operation is terminated automatically if an enroll timeout occurs or when the specified quantity enrollment images have been captured Function Prototype StopEnroll AbortFlag As Long AbortFlag This flag determines whether those images captured prior to termination are discarded or stored within the FRS database as follows 1 Discard images and all related user information from FRS database 0 Retain captured images and user information Remarks Following termination of the verify operation the tracking operation will remain active The tracking operation may be terminated using the StopTrack method Discovery OCX e 14 Copyrigh
12. ional when disconnected from the Server The Discovery application illustrates the functionality of Acsys facial recognition within technology in a variety of practical applications these being 1 Facial enrollment from either live video stream input i e camera VCR broadcast etc or from static images i e J PEG files 2 Facial recognition in classification mode one to many identification 3 Facial recognition in verification mode one to one identification 4 Facial verification combined with Wiegand signal i e proximity card keypad etc 5 Operation of R410 R810 relay controller following classification or verification operations i e for opening door controlling signs etc 6 Interface for remote alarm on classify verify operations i e mobile wireless PDA PECOS 7 Speech synthesis on recognition classification of an individual A description of the OCX function interface for the Discovery System is provided in the following Discovery OCX e 2 Copyright 2004 Acsys Biometrics Corp All Rights Reserved 2 OCX METHODS Discovery OCX e 3 Copyright O 2004 Acsys Biometrics Corp All Rights Reserved 2 1 ConnectClient This function is used to connect a Discovery Client application to a specific Discovery Server containing the FRS database and template generation modules Once a client has been connected to a specific server subsequent execution of the application will attempt reconnect to t
13. n enroll timeout condition Function Prototype EnrollTimeout 4 10 ClientConnected Returns a event when client has been connected to a new FRS server ClientConnect function succeeded Function Prototype ClientConnected ServerName As String ServerName the name of server Discovery OCX e 30 Copyright 2004 Acsys Biometrics Corp All Rights Reserved
14. operation only These values are returned for the specified tracker thread This property is read only Function Prototype ClosestMatchID trackerlndex as Long matchCount As Long As Variant trackerlndex Index to tracker thread The valid index range is 0 to 15 matchCount Specifies the number of closest matches that are returned Remarks Returned is a safearray of type String containing the user ID numbers for the top N matches In the event that the specified tracker thread is not currently tracking a face a NULL array is returned 3 4 ClosestMatchName Returns the user first and last name for the top N closest matches sorted in decreasing order of recognition confidence classify operation only These values are returned for the specified tracker thread This property is read only Function Prototype ClosestMatchName trackerlndex as Long matchCount As Long As Variant trackerlndex Index to tracker thread The valid index range is 0 to 15 matchCount Specifies the number of closest matches that are returned Remarks Returned is a safearray of type String containing the user name for the top N matches The string returned contains the first name followed by last name using a comma separator In the event that the specified tracker thread is not currently tracking a face a NULL array is returned Discovery OCX e 17 Copyright O 2004 Acsys Biometrics Corp All Rights Reserved 3 5 EnrollState Returns the current
15. rame in which a face has been located Function Prototype TrackFrame trackerlndex As Long trackerlndex Index to tracker thread which located a face 4 5 TrackNew Returns an event when a tracker thread has located a face within a video stream following a call to StartTrack StartClassify StartVerify or StartEnroll This event is produced for the first frame in which a tracking thread has located a face Function Prototype TrackNew trackerlndex As Long trackerlndex Index to the tracker thread which initiated tracking of a face 4 6 TrackLost Returns an event if a tracker thread has lost tracking of the face within a video stream following a call to StartTrack StartTrack StartClassify StartVerify or StartEnroll This event is produced for the first frame in which a tracking thread has lost tracking of a face Function Prototype TrackLost trackerlndex As Long trackerlndex Index to the tracker thread which lost tracking of a face Discovery OCX e 29 Copyright O 2004 Acsys Biometrics Corp All Rights Reserved 4 7 ClassifyTimeout Returns an event when a classify operation has been terminated due to a classify timeout condition Function Prototype ClassifyTimeout 4 8 VerifyTimeout Returns an event when a verify operation has been terminated due to a verify timeout condition Function Prototype VerifyTimeout 4 9 EnrollTimeout Returns an event when an enroll operation has been terminated due to a
16. s 0 to 15 Remarks The user name is returned by first name followed by last name using a comma separator In the event that the specified tracker thread is not currently tracking a face a NULL string is returned 3 16 ShowClosestMatch Specifies the display state of the closest matches overlay This overlay is shown on the right boarder of the video display and can be enabled only during a classify operation This operation is identical to clicking the Closest Matches button provided on the Discovery GUI Function Prototype ShowClosestMatch As Boolean Remarks The display state for the closest matches overlay is provided as follows TRUE Closest matches overlay is displayed FALSE Closest matches overlay is not displayed Discovery OCX e 23 Copyright 2004 Acsys Biometrics Corp All Rights Reserved 3 17 TrackConfidence Returns the tracking confidence for the specified tracker thread This property is read only Function Prototype TrackConfidence tracklndex As Long As Single tracklndex Index to tracker thread The valid index range is 0 to 15 Remarks The tracking confidence measures the level of confidence that the object is in fact a face The default confidence threshold applied for facial tracking is 0 4 3 18 TrackCount Returns the number of tracker threads that are currently active i e tracking faces This property is read only Function Prototype TrackCount As Long Remarks The number of tra
17. s the following adjustments The form layout and options vary considerably between video capture providers Brightness Contrast Gamma Saturation Auto Exposure Frame Rate Discovery OCX e 6 Copyright O 2004 Acsys Biometrics Corp All Rights Reserved Format This pushbutton activates a second properties dialog for the selected video driver The various video drivers generally provides the following adjustments Compression Pixel Resolution In the event that video has not been initialized using the Initialize function SetVideo will initialize video 2 4 ShowDatabaseEdit Displays the Discovery database edit screen Function Prototype ShowDatabaseEdit Remarks The Discovery database edit screen allows the user to view and delete images and users within the FRS database Menu items provided in this screen also allow the user to import and export individuals between separate installations of the FRS Discovery system Further information regarding the Discovery database edit screen is provided in Section 3 3 of the Discovery manual The database edit screen is available on the Discovery Server only Discovery OCX e 7 Copyright O 2004 Acsys Biometrics Corp All Rights Reserved 2 5 ShowEventViewer Displays the Discovery event viewer screen Function Prototype ShowEventViewer Remarks The Discovery event viewer allows the user to browse event information This information includes the following activities
18. state of the enrollment operation This property is read only Function Prototype EnrollState As Boolean Remarks This function returns a Boolean flag that indicates the current state of the enroll operation as follows TRUE Enrollment is currently active FALSE Enrollment is not currently active 3 6 EnrollCount Returns the current number of facial images that have been captured during an enrollment operation This property is read only Function Prototype EnrollCount trackerl ndex As Long As Long trackerlndex Index to tracker thread The valid index range is 0 to 15 Remarks Returns a long containing the number of images that have been enrolled from the current enrollment operation Discovery OCX e 18 Copyright O 2004 Acsys Biometrics Corp All Rights Reserved 3 7 HeadSize This property returns the size of the tracker box for the specified tracker thread This property is read only Function Prototype HeadSize trackerlndex As Long As Single trackerlndex Index to tracker thread The valid index range is 0 to 15 Remarks The size is expressed as the height of the tracker box divided by total image frame height If a face is not being tracked by the specified thread a value of 0 0 is returned 3 8 HeadXaxis This property returns the horizontal coordinate value of the specified tracker thread This property is read only Function Prototype HeadXaxis trackerlndex As Long As Single trackerlndex Index to
19. t O 2004 Acsys Biometrics Corp All Rights Reserved 3 OCX PROPERTIES Discovery OCX e 15 Copyright O 2004 Acsys Biometrics Corp All Rights Reserved 3 1 ClassifyState Returns the current state of the classify operation This property is read only Function Prototype ClassifyState As Boolean Remarks This function returns a Boolean flag that indicates the current state of the classify operation as follows TRUE Classify is currently active FALSE Classify is not currently active 3 2 ClosestMatchConfidence Returns the recognition confidence for the top N closest matches sorted in decreasing order of recognition confidence classify operation only These values are returned for the specified tracker thread This property is read only Function Prototype ClosestMatchConfidence trackerlndex as Long matchCount As Long As Variant trackerlndex Index to tracker thread The valid index range is 0 to 15 matchCount Specifies the number of closest matches that are returned Remarks Returned is a safearray of type Single containing the recognition confidence values for the top N matches In the event that the specified tracker thread is not currently tracking a face a NULL array is returned Discovery OCX e 16 Copyright O 2004 Acsys Biometrics Corp All Rights Reserved 3 3 ClosestMatchi D Returns the user ID numbers for the top N closest matches sorted in decreasing order of recognition confidence classify
20. ther than the full capture frame that is returned by using ImageFrame Tracking of facial objects is initiated using StartTrack and images of the tracked faces may be retrieved on a frame by frame basis using Getl mageSegment following a TrackFrame event Within the Coordinates parameter the head coordinate and tilt values are expressed as follows HeadXaxis center of tracked region as a fraction of the image segment width HeadYaxis center of tracked region as a fraction of the image segment height HeadSize height of region as a function of the image segment height HeadXangle degrees of head tilt along vertical normal forward and back not used HeadYangle degrees of head tilt along Medula azimuth sideways motion HeadZangle degrees of head tilt along vertical tangent shoulder to shoulder See Also FilterVariance ImageFrame StartTrack Discovery OCX e 5 Copyright O 2004 Acsys Biometrics Corp All Rights Reserved 2 3 SetVideo Displays the dialog box used for setting video properties Function Prototype SetVideo Remarks The video dialog box that is displayed is shown below and the buttons activate the corresponding form for the selected video driver as described below Video Setting x Select Camera Logitech QuickCam Pro 3000 Videum Video Capture Format Select Input DK Cancel Source This pushbutton activates a properties dialog for the selected video driver which generally provide
21. tracker thread The valid index range is 0 to 15 Remarks The horizontal coordinate is expressed as the distance from the left side of the frame divided by total frame width The coordinate value returned corresponds to the center of the tracking box If the specified tracking thread has not currently located a face a value of 0 0 is returned Discovery OCX e 19 Copyright O 2004 Acsys Biometrics Corp All Rights Reserved 3 9 HeadYangle This property returns the degree of head tilt in the azimuthal direction sideways motion for the specified tracker thread This property is read only Function Prototype HeadYangle trackerlndex As Long As Single trackerlndex Index to tracker thread The valid index range is 0 to 15 Remarks This value is expressed in degrees with 0 degrees corresponding to the full frontal projection If the specified tracking thread has not currently located a face a value of 0 0 is returned 3 10 HeadYaxis This property returns the vertical coordinate value of the specified tracker thread This property is read only Function Prototype HeadYaxis trackerlndex As Long As Single trackerlndex Index to tracker thread The valid index range is 0 to 15 Remarks The vertical coordinate is expressed as the distance from the top of the frame divided by total frame height The coordinate value returned corresponds to the center of the tracking box If the specified tracking thread has not currently located a f
22. trics Corp All Rights Reserved Further information regarding the Discovery options dialog is provided in Section 3 2 of the Discovery manual 2 7 StartTrack Initiates the facial tracking operation This operation is identical to that operation performed by manually clicking the Track button provided on the Discovery GUI Function Prototype StartTrack Remarks FRS Discovery System allows tracking of up to 16 individuals simultaneously The maximum number of tracking threads is adjustable through the Options dialog 2 8 StopTrack Terminates the tracking operation This operation is identical to clicking the Track button provided on the Discovery GUI while tracking is active Function Prototype StopTrack Remarks On initiation of a verify classify or enroll event the tracking operation is started automatically The tracking operation however is not terminated when the verify or enroll is complete or when the classify operation is terminated This function may be used to terminate the tracking operation following verify classify or enroll Discovery OCX e 10 Copyright O 2004 Acsys Biometrics Corp All Rights Reserved 2 9 StartClassify Initiates the classification operation This operation is identical to clicking the Classify button provided on the Discovery GUI Function Prototype StartClassify Remarks The classify operation performs a one to many identification In the event that the classi
23. urned for either a verify or classify operation The default threshold applied for verification or classification operations is 0 4 The valid range for these thresholds are from 0 0 low confidence to 1 0 high confidence In the event that a classify operation is being performed this property returns the largest confidence value among all users that have been enrolled within the system In the event that the specified tracker thread is not currently actively tracking a face a value of 1 0 is returned 3 14 Recognition D Returns user ID number that corresponds to the largest recognition confidence value during a classify or verify operation This ID number is returned for the specified tracker thread This property is read only Function Prototype Recognition Di trackerlndex as Long As String trackerlndex Index to tracker thread The valid index range is 0 to 15 Remarks In the event that the specified tracker thread is not currently tracking a face Null string is returned Discovery OCX e 22 Copyright O 2004 Acsys Biometrics Corp All Rights Reserved 3 15 RecognitionName Returns the user first and last name that corresponds to the largest recognition confidence value during a classify or verify operation The user name is returned for the specified tracker thread This property is read only Function Prototype RecognitionName trackerlndex as Long As String trackerlndex Index to tracker thread The valid index range i
Download Pdf Manuals
Related Search