I have a camera mounted at some [x,y,z] looking at a figure on the
z=0 plane. Is there a way to derive the perspective transformation
matrix without knowing any of the angles that the camera is mounted at?
I can put a square (or anything else) of known dimensions on the z=0
plane to use for this calibration.
Any hints would be welcome. Everything that I have ever studied shows
how to create a perspective view but I have not been able to figure
out how to "reverse engineer" the problem.
Thanks a lot,