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Improved Motion Estimation Using Early Zero-Block Detection

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Author(s): Lee YM | Tsai YJ | Lin Y

Journal: EURASIP Journal on Image and Video Processing
ISSN 1687-5176

Volume: 2008;
Issue: 1;
Start page: 524793;
Date: 2008;
Original page

ABSTRACT
Abstract We incorporate the early zero-block detection technique into the UMHexagonS algorithm, which has already been adopted in H.264/AVC JM reference software, to speed up the motion estimation process. A nearly sufficient condition is derived for early zero-block detection. Although the conventional early zero-block detection method can achieve significant improvement in computation reduction, the PSNR loss, to whatever extent, is not negligible especially for high quantization parameter (QP) or low bit-rate coding. This paper modifies the UMHexagonS algorithm with the early zero-block detection technique to improve its coding performance. The experimental results reveal that the improved UMHexagonS algorithm greatly reduces computation while maintaining very high coding efficiency.
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