The SGBM mode
Emgu.CV.World (in Emgu.CV.World.dll) Version: 184.108.40.20624 (220.127.116.1124)
This is the default mode, the algorithm is single-pass, which means that you consider only 5 directions instead of 8
Run the full-scale two-pass dynamic programming algorithm. It will consume O(W*H*numDisparities) bytes, which is large for 640x480 stereo and huge for HD-size pictures.