Abstract
In this paper, a new hierarchical edge-based block motion estimation scheme is proposed for the exact motion estimation in the passband structure. The basic idea is to estimate an initial motion at the top-most layer in order to increase the accuracy of the motion displacement at the next lower layers in the motion estimation pyramid. This is based on a blockmatching method by the block-edge pattern. In addition, we present a technique of classifying a block-edge pattern by use of only two parameters, which are obtained by calculating two highpass subband signals at the top-most layer in the motion estimation pyramid. Using this scheme, the coding performance is improved by the exact motion estimation. We also present a method to encode the residual errorframes in a passband structure. Simulation results show that the performance of the scheme with the edge-based initial motion estumation is better than without it, especially when the high degree of motion is existed.
| Original language | English |
|---|---|
| Pages (from-to) | 337-349 |
| Number of pages | 13 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 2094 |
| DOIs | |
| State | Published - 1993 |
| Event | Visual Communications and Image Processing 1993 - Cambridge, MA, United States Duration: 7 Nov 1993 → 7 Nov 1993 |