the example command line is a bit misleading. The occlusion calculator is able to run in two different modes:
- in the first mode it uses a regular spatial subdivision and the degree of the subdivision is configurable via the command line (-subdivx/y/z)
- in the second mode the occlusion data is generated along a camera path; the number of subdivisions along the path is configurable with "-pathsteps"
It can only run in one of the modes at a time. In your example it uses the camera path for occlusion data generation.
Thanks alot for your answer
the " -camera" must be specified with the right camera track file in the right path and it work well !!!