Calculate optical flow using Horn & Schunck. USAGE [Vx,Vy] = optFlowHorn( I1, I2, [sigma], [show] ) INPUTS I1, I2 - input images to calculate flow between sigma - [1] amount to smooth by (may be 0) show - [0] figure to use for display (no display if == 0) OUTPUTS Vx, Vy - x,y components of flow [Vx>0->right, Vy>0->down] EXAMPLE See also OPTFLOWCORR, OPTFLOWLK Piotr's Image&Video Toolbox Version 2.0 Copyright 2008 Piotr Dollar. [pdollar-at-caltech.edu] Please email me if you find bugs, or have suggestions or questions! Licensed under the Lesser GPL [see external/lgpl.txt]