OpenCV Stereo Matching (GPU and CPU versions)

Block Matching, Belief Propagation, Constant Space Belief Propagation (GPU ION2) Block Matching and Semi Global Block Matching (Intel Atom D525) http://blog.cvblocks.ru/index.php/2011/05/31/opencv-stereo-matching-%D0%BD%D0%B0-gpu-%D0%B8-cpu/