Here is a tutorial on how to generate a depth map from stereo images:

https://www.docs.opencv.org/master/dd/d53/tutorial_py_depthmap.html

However, the accuracy does not look very good. I suspect there is also a 
bias in accuracy in one (the horizontal?) direction.

I may have to do this for a few of my scenes, though, as overriding all 
of my textures just to create a depth map is a serious PITA. (There's no 
easy way to do it since povray SDL is not OOP.)


Mike

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