Hello, We are trying to perform a registration and use the live tracking using the MITK IGT Tracking Toolbox. We have a pointer tool with a rom file from NDI Architect and an stl model, as well as a skull model with a rom-file and an stl, representing it's surface. The skull has an attached rigid body with optical tracking markers and some fiducial which we are able to identify on the surface and in the stl.
We are performing the following steps: 1. Load a pointer tool with it's rom file and stl. 2. Start the tracking and validate the pointer-rom-file by making a pivot movement. The tool tip position remains the same in the visualization. 3. Stop the tracking and load the skull-rom with it's rom file and the skull-stl as visualization. 4. Connect to the NDI and start the tracking. 5. Switch to IGT Fiducial Registration Plugin 6. Choose the pointer tool as tracking pointer 7. Choose the skull as surface 8. Add 6 fiducial positions by clicking them on the skull-stl-model as "Image/object/moving fiducials" 9. Add the same 6 points in the same order by touching them with the pointer-tool on the skull surface. The skull is not moved during this procedure. Now we can see our two point sets in the display, which are not registered. 10. Check "Move image points" (turn it on) and click "Register (object is moved)" What bugs me the most is that now the image point set is moved, but not the skull-model. (We still didn't move the skull) We can touch all the fiducials from before with the pointer-tool and still validate that the points in the tracker point set are the same. Also the image point set does not keep it's relative spacial position, meaning two points are "off" in relation to the other four. If we now move the skull, only the skull-model is moving, neither of the point sets. Our questions are: Why does the registration have no effect on the stl model (which we want to registrer)? Why does the point-based registration go wrong? If we repeat the procedure without checking "Move image points", the image point set does not move (makes sense). The rest remains the same. When moving the skull, none of the points move. Only the stl-model moves. Thank you for your help in advance, Jan -- Sent from: http://mitk-users.1123740.n5.nabble.com/ ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ mitk-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/mitk-users
