Feature-Based Intra-Prediction Mode Decision For H.264 (MP-P1)

Author(s) : Changsung Kim (University of Southern California, USA) Hsuan-Huei Shih (Ali Microelectronics Corp., USA) C. -C. Jay Kuo (University of Southern California, USA)

Abstract : A fast mode decision method for Intra prediction in H.264 is proposed in this work to reduce the encoder complexity. The proposed algorithm adopts a multi-stage sequential mode decision process that uses joint spatial and transform domain features to filter out unlikely candidate modes and, in the final stage, a simplified rate-distortion optimization method with a rate-distortion model is applied to a very limited number of candidates. It incorporates an early termination mechanism to save computations. Experimental results are given to emonstrate that the proposed scheme achieves a speed-up factor of 10-15 as compared with the current RD optimized mode decision with little quality degradation.

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