A NEW MOTION ESTIMATION METHOD USING FREQUENCY COMPONENTS

Motion estimation techniques are widely used in today's video processi ng systems. The most frequently used techniques are the block matching method and the differential method, In this paper, we have studied th is topic from a viewpoint different from the above to explore the fund amental limits and tradeoffs in image motion estimation, The underlyin g principles behind two conflict requirements in motion estimation, ac curacy and ambiguity, become clear when they are analyzed using this t ool - frequency component analysis. This analysis also suggests new mo tion estimation algorithms and ways to improve the existing algorithms . The so-called frequency component motion estimation algorithm is thu s proposed. Compared to the conventional block matching and phase corr elation algorithms, this approach provides more reliable displacement estimates particularly for the noisy pictures. (C) 1997 Academic Press .