Fast Mode Decision for H.264 Based on Rate-Distortion Cost Estimation

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Fast Mode Decision for H.264 Based on Rate-Distortion Cost Estimation

Yao-Chung Lin; Fink, T.; Bellers, E.

2007 IEEE International Conference on Acoustics, Speech and Signal Processing - ICASSP '07, 04/2007, Volume: 1

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A fast mode decision algorithm for an H.264 encoder is proposed which reduces computation by using a statistical dependency of macroblock rate-distortion (RD) costs. The algorithm skips the motion estimation and/or intra prediction mode decision with an adaptive threshold. The simulation results show that the proposed algorithm achieves an almost 2X speedup with negligible degradation in coding efficiency.

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