lay if == 0)

 OUTPUTS
  Vx, Vy      - x,y components of flow  [Vx&gt;0-&gt;right, Vy&gt;0-&gt;down]
  reliab  - reliability of optical flow in given window (cornerness of
            window)

 EXAMPLE

 See also <a href="optFlowHorn.html" class="code" title="function [Vx,Vy] = optFlowHorn( I1, I2, sigma, show )">OPTFLOWHORN</a>, <a href="optFlowLk.html" class="code" title="function [Vx,Vy,reliab]=optFlowLk( I1, I2, winN,winSig, sigma, thr, show )">OPTFLOWLK</a>

 Piotr's Image&amp;Video Toolbox 