Exploiting temporal correlation with adaptive block-size motion alignment for 3D wavelet coding

Ruiqin Xiong; Feng Wu; Shipeng Li; Zixiang Xiong; Ya-Qin Zhang

doi:10.1117/12.532326

18 January 2004 Exploiting temporal correlation with adaptive block-size motion alignment for 3D wavelet coding

Ruiqin Xiong, Feng Wu, Shipeng Li, Zixiang Xiong, Ya-Qin Zhang

Proceedings Volume 5308, Visual Communications and Image Processing 2004; (2004) https://doi.org/10.1117/12.532326
Event: Electronic Imaging 2004, 2004, San Jose, California, United States

Abstract

This paper proposes an adaptive block-size motion alignment technique in 3D wavelet coding to further exploit temporal correlations across pictures. Similar to B picture in traditional video coding, each macroblock can motion align from forward and/or backward for temporal wavelet de-composition. In each direction, a macroblock may select its partition from one of seven modes - 16x16, 8x16, 16x8, 8x8, 8x4, 4x8 and 4x4 - to allow accurate motion alignment. Furthermore, the rate-distortion optimization criterions are proposed to select motion mode, motion vectors and partition mode. Although the proposed technique greatly improves the accuracy of motion alignment, it does not directly bring the coding efficiency gain because of smaller block size and more block boundaries. Therefore, an overlapped block motion alignment is further proposed to cope with block boundaries and to suppress spatial high-frequency components. The experimental results show the proposed adaptive block-size motion alignment with the overlapped block motion alignment can achieve up to 1.0 dB gain in 3D wavelet video coding. Our 3D wavelet coder outperforms the MC-EZBC for most sequences by 1~2dB and we are doing up to 1.5 dB better than H.264.

Citation Download Citation

Ruiqin Xiong, Feng Wu, Shipeng Li, Zixiang Xiong, and Ya-Qin Zhang "Exploiting temporal correlation with adaptive block-size motion alignment for 3D wavelet coding", Proc. SPIE 5308, Visual Communications and Image Processing 2004, (18 January 2004); https://doi.org/10.1117/12.532326

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