optflow_horn

PURPOSE

Calculate optical flow using Horn & Schunck.

SYNOPSIS

function [Vx,Vy] = optflow_horn( I1, I2, sigma, show )

DESCRIPTION

 Calculate optical flow using Horn & Schunck.

 INPUTS
   I1, I2      - input images to calculate flow between
   sigma       - [optional] amount to smooth by (may be 0)
   show        - [optional] figure to use for display (no display if == 0)

 OUTPUTS
   Vx, Vy  - x,y components of optical flow [Vx>0 -> flow is right, Vy>0 -> flow is down]

 DATESTAMP
   29-Sep-2005  2:00pm

 See also OPTFLOW_CORR, OPTFLOW_LUCASKANADE

CROSS-REFERENCE INFORMATION

This function calls:

gauss_smooth Applies Gaussian smoothing to a (multidimensional) image.
im IM [2D] Function for displaying grayscale images.

This function is called by: