DCT-Based Motion Estimation

Abstract

A method for estimating the translational motion of an object is provided that first computes a plurality of DCT/DST coefficients for two sequential frames. These transform coefficients are then used to compute a pseudo phase function which is then fed into an inverse transform decoder. The output of the decoder is searched for peak values which are then used to determine the displacement of the object.

U.S. Patent and Trademark Office Description

PTO

Inventor(s)

K. J. Ray Liu, Ut-Va Koc

Date Issued

08/04/1998

Patent No.

5,790,686