Hierarchical edge-based block motion estimation for video subband coding at low bit-rates

Joon-Hyeon Jeon; Jae-Kyoon Kim

doi:10.1117/12.157952

22 October 1993 Hierarchical edge-based block motion estimation for video subband coding at low bit-rates

Joon-Hyeon Jeon, Jae-Kyoon Kim

Proceedings Volume 2094, Visual Communications and Image Processing '93; (1993) https://doi.org/10.1117/12.157952
Event: Visual Communications and Image Processing '93, 1993, Cambridge, MA, United States

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 error frames in a passband structure. Simulation results show that the performance of the scheme with the edge-based initial motion estimation is better than without it, especially when a high degree of motion exists.

Citation Download Citation

Joon-Hyeon Jeon and Jae-Kyoon Kim "Hierarchical edge-based block motion estimation for video subband coding at low bit-rates", Proc. SPIE 2094, Visual Communications and Image Processing '93, (22 October 1993); https://doi.org/10.1117/12.157952

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