A novel approach to skip mode decision for H.264

D. Wu; K. P. Lim; W. Yao; T. K. Chiew; J. Y. Tham

doi:10.1117/12.765050

28 January 2008 A novel approach to skip mode decision for H.264

D. Wu, K. P. Lim, W. Yao, T. K. Chiew, J. Y. Tham

Proceedings Volume 6822, Visual Communications and Image Processing 2008; 68220A (2008) https://doi.org/10.1117/12.765050
Event: Electronic Imaging, 2008, San Jose, California, United States

Abstract

One of the most frequently used coding mode in H.264 is skip mode. In the conventional approach, after the best RD mode has been computed and the resultant predicted error coefficients block is all quantized to zero, it is switched to skip mode. This is a waste of computational resources because skip mode doesn't require forward transform and quantization. In this paper, skip mode condition is checked for the macroblock prior to multi-block motion estimation. Motion estimation will not be performed if the condition is satisfied which will drastically reduce the computations. The condition considers zero-block property after 4x4 block transform/quantisation and caters for noise inherent in natural video images. In addition, color components are also taken into consideration for skip mode decision. The experimental results show that the approach can improve encoder speed greatly with negligible bit rate increase or PSNR degradation.

Citation Download Citation

D. Wu, K. P. Lim, W. Yao, T. K. Chiew, and J. Y. Tham "A novel approach to skip mode decision for H.264", Proc. SPIE 6822, Visual Communications and Image Processing 2008, 68220A (28 January 2008); https://doi.org/10.1117/12.765050

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