Abstract
H.264 improves the coding efficiency by adopting rate distortion optimization (RDO); however, it yields high computational complexity. In order to reduce the intra-frame coding time, a fast and effective intra-prediction mode selection algorithm is proposed. The minimum sum of absolute differences between sub-block and its marginal weighted-pixels are used for selecting the candidates of prediction modes to speed up the intra-prediction process with an early termination criterion. Experimental results show that the proposed method can reduce the encoding time by more than 63% comparing with JM (Joint Model) software and is better than the previous algorithms, with negligible loss of coding performance.
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Foundation item: Supported by the National High Technology Research and Development Program of China (863 Program) (2006AA040307)
Biography: WU Bentao, male, Ph. D. candidate, research direction: multimedia signal processing.
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Wu, B., Wu, M. An improved intra-prediction algorithm for H.264. Wuhan Univ. J. Nat. Sci. 15, 340–344 (2010). https://doi.org/10.1007/s11859-010-0663-1
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DOI: https://doi.org/10.1007/s11859-010-0663-1