bm.init('OptionName', optionValue, ...)

Options

• Preset specifies the whole set of algorithm parameters, one of: 'Basic', 'FishEye', 'Narrow'. After constructing the class, you can override any parameters set by the preset.
• NDisparities the disparity search range. For each pixel algorithm will find the best disparity from 0 (default minimum disparity) to ndisparities. The search range can then be shifted by changing the minimum disparity. default 0.
• SADWindowSize the linear size of the blocks compared by the algorithm. The size should be odd (as the block is centered at the current pixel). Larger block size implies smoother, though less accurate disparity map. Smaller block size gives more detailed disparity map, but there is higher chance for algorithm to find a wrong correspondence. default 21.