I want introduce the PhotoSculpt software. A soft that allow from two images ( a stereo pair) to obtain depth/normal/color maps. The process seems to work on a multi-resolution approach. (Something like a dynamic approach or ...) No more information about how it works.
Obviously the computed depth are not metrics. But the results looks good but do not works on all stereo image pair. The stereo pair seems require a viewpoint angle of 10 to 20 °.
On other it works quite well (it's a pity that the soft have made a confusion on small blobby things)