I managed to get VisionWorks-1.6-Samples installed and working, and even with my logitech c920 camera.
All I had to do was to plug-in the camera, and run the command:
which takes image from /dev/video1
However, it captures at 1920x1080 resolution. I have not been able to find a way to change resolution.
Also, there is the auto-exposure problem. Because the camera does certain things automatically, and I think this creates problems for image processing algoritms.
I can access the camera settings and change resolution using guvcview, but after exiting guvcview and starting the nvx_demo_motion_estimation - it will continue capturing at 1920x1080
Any help/pointers greatly appreciated,