TexMesh3D Viewer User Guide
Contents
1. or key gt to pass at the next representation Clicking the Materials button in the Interface window open a materials window It allows you to change the aspect of the shaded surfaces in modes shade and texture modulate for example to render the surface in shade mode coloured and more shinny Shinness 60 mon on Saturation Lu 0 00 valve E re Red e 3 Groen LD oes 7 Shoes I ois Pe a n Reset Object Colars to Default aj Sort triangles for blending Reset Object Colors to Defaults srat Object Colors to Texture Defaults But the large number of parameters available to control shading are difficult to adjust for a non expert in image synthesis However convenient reset buttons can be used when the user becomes to be lost Clicking the clipping planes button in the Interface window opens open a clipping planes window It allows you to cut the object by enabling disabling 6 different oriented clipping plans For each plane you can freely choose the x y z coordinates of its normal in the 3 boxes on the left and the position of the plane by swiping it along its normal direction by adjusting the cursor on the right clipping planes clipping planes Disable f 0 00003 K M Afoa 4 64 413006 Es i Ali nnn fannan e cia Pay A F gt Cisable f 0 00000 a nnann si 1 Anann Disable 0 000000 12 192120 Disablel 1 00000 annn 4 o 02. information 91706 triangles 45849 vertices bounding box o2 2 266 9 89 1 79 5 76 8 59 1 visualization mode ye Wire A Shade ww Texture decal wy Texture modulate v Zbuffer v Data Shade materials 3 Moving the 3D model with the mouse For zooming place the mouse cursor on the 3D model click simultaneously the right and left buttons of the mouse and move upwards for zooming in and downwards for zooming out If the mouse has a wheel between its two buttons you can use it for zooming too Tex 4ech tb Alternatively when the TexMesh3D window is active click in to activate it you can click on the key z or key Z to zoom in or zoom out respectively with predefined zoom factors For panning lateral translation of the object click on the right button of the mouse and drag it in the wanted direction TexMesh3D aio x When the TexMesh3D window is active clicking on the key p will limit the mouse only to panning motion in order to centre a region of interest of the object in the window when clicking either the right or the left button of the mouse Pressing again the key p toggle will reactivate the mouse for zoom panning and rotation interactivity For rotating push on the left button of the mouse and drag it horizontally or vertically The model will rotate around a horizontal and vertical axis respectively which are parallel to the window axis at th
3. goureau shading camera 200m out d texture mapping decal mode Left Arrow orginal camera viewpoints left turn 4 texture mapping wireframe mode Right Arrow original camera viewepuinls right turn texture mapping modulate mode save camera state 6 zbuffer drawing Space load camera state shadow on off toggle e Interface loj x Enter light mode on off toggle Object Misc Help T date mapping b original image on off toggle lt next data original image silhouette on off toggle previous data E transparency onol toggle caplure nmage caplure ony C capture vector image capture eps object amp camera position reset Q q quit
4. 00 00 4fo 0 ooo er 7 azai i i 23 925030 p L 00000 p L00000 yr 2 a a 4 uuuuy Al 1 uu000 A ZETE E When the TexMesh3D window is active clicking the key ENTER activates or stop the light mode toggle An extension appears in the Interface window You can chose in this extension the direction of lighting by rotating the object with the mouse as in the TexMesh3D window o gt terian ToT a O x Ghject Mise Help Texhiestiom O B default dst th inform ston ULI iarlles a5 0a vertinta bounding boxi 62 2 266 9 09 1 75 5768 55 1 witvelzabon mode se Wire Chade se Teeture decal a Tenure ware ar latura modulate ae buer w Data Were we Dats Shade materials Hippirg planes When the TexMesh3D window is active clicking the key s activates or stop the shadow rendering toggle Tex egh sm J 3 Inj x If you want to capture an image of the current TexMesh3D window you have just to press the key c image in png format or on the key C vector image in eps format when the TexMesh3D window is active The eps format can be included in word or LaTeX files It is well adapted to print in postscript wireframe figures without aliasing effects as the pixelisation of lines and triangle edges You can also save the current state of the camera corresponding to the TexMesh3D window by just pressing the key dot This allows you
5. TexMesh3D Viewer User Guide 1 Starting the TexMesh3D viewer The user can start the TexMesh3D viewer by the just clicking either on the TexMesh3D exe thumbnails placed on the PC Desk Oy Ed TexMesh D exe or directly by clicking on the TexMesh3D viewer executable file TexMesh3D exe in the directory where it has been placed LEIDI 114 44ko LLDG200 17 14 6760KO DHUZ Z0H 14 05 2072ko OS 0E A004 16 45 Iko OSfI2f2008 Leto aril aes 0 j ePi 2 Loading an object In the Interface window click on Object and then on Add in the object menu An open data file window appears Navigate through the discs and directories on the left interactive box in order to select the directory containing the tri files you want to visualize The list of the files contained in the selected directory appears on the right box Select by double clicking in the right box the file having a tri extension corresponding to the object to be visualised twins9_Ir tri in the following example open data file Create Dir Delete File R paranindal twins _ir pprn teins 9_Ir tri After loading the Interface window on the left provides buttons for various modes of visualization The corresponding shaded 3D model appears in shade mode within the TexMesh3D window Object Mise Help Objects fal default dat Raoocanic2 mr tri
6. e beginning of the rotation and which remain fixed with the object during the dragging a exMeshal x p CA T ba r v Ee e i i i I l H f a f 1 t A Then relax the left button of the mouse The object remains fixed in its new position If you push again the left button with the cursor inside the TexMesh3D window the two rotation axis are redefined with the new position of the object parallel to the window axis With a little practice it becomes very easy to look at an object in any position by just some few successive quick push and drag actions You can rotate the object around a fixed rotation axis with a constant angle step default 10 degrees by pressing the key left arrow left turn or the key right arrow right turn If a param dat file exists in the current directory the view points will correspond to the same view points as in the image sequence used to build the model with the GET ENST 3D object reconstruction technique For position and camera reset click on the key i when the TexMesh3D window is active This will reset the position of the virtual camera in exactly the same point of view as from the first image of the original object sequence 4 Changing the aspect of the 3D model When the TexMesh3D window is active clicking the key 7 will activate the wire representation of the triangular mesh wireframe drawing mode TexMeshio When the TexM
7. esh3D window 1s active clicking the key 2 will activate the shaded representation of the 3D model Gouraud shading mode as after loading the object file When the TexMesh3D window is active clicking the key 3 will activate the direct texture mapping without added synthetic shading Texture mapping decal mode D TeuMeshap RA ees When the TexMesh3D window 1s active clicking the key 4 will activate the texture mapping with the superposition of the wire representation Texture mapping wireframe mode exMesh3u When the TexMesh3D window 1s active clicking the key 5 will activate the texture mapping with added synthetic shading Texture mapping modulate mode Tex eshib E a 5 x Each of the above 5 different aspects modes for the visualisation of the 3D model can also be obtained by clicking directly in the Interface window on the corresponding mode button as the Texture decal mode in the figure below Wire Shade Texture decal Texture wire Texture modulate respectively chipping planes The Zbuffer mode provides another representation of the object similar to the Shade mode but computed differently as with the graphic board and without its acceleration ee Co ae The Data Wire and Data Shade modes allow us to visualise various specific data resulting from the computation Multiple sets of data may be successively shown by clicking key lt
8. to retrieve the same viewpoint later in another session by loading the camera state by pressing the key SPACE The key b toggle allows you to visualize an image of the original sequence with the 3D model in exactly the same position but behind the image Key t toggle puts the image in semi transparency This allows you to compare simultaneously the 3D reconstructed model with the original image You can go from an original image to the next previous one by pressing the key left arrow left turn or the key right arrow right turn The images of the original sequence must be in a directory named seq laying at the same level as the loaded file tri Similarly the key v toggle allows you to visualize the object silhouette in the same image of the original sequence The keys left arrow right arrow and t can also be used The silhouettes must lay in a directory named sil laying at the same level as the loaded file tri In the Interface window click on Help then on About in the Help menu You will get the following window on the right which contents the list of all the key shortcuts available to the user when interacting with the TexMesh3D viewer ye TELECOM TexMesh3D 1 0 PAR 5 Carlos Hermande Fstehan oole national Coole Nationale Superieure des Telecommunications hy Ca elie eee ttidcoommunications C 2001 key shartruts 1 wireframe drawing Z camera 700m in 2
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