Fast intracoding unit size decision algorithm for high-efficiency video coding

Dongxu Xu; Qiwei Lin; Xiaohui Dong

doi:10.1117/1.JEI.23.1.013012

4 February 2014 Fast intracoding unit size decision algorithm for high-efficiency video coding

Dongxu Xu, Qiwei Lin, Xiaohui Dong

Author Affiliations +

Journal of Electronic Imaging, Vol. 23, Issue 1, 013012 (February 2014). https://doi.org/10.1117/1.JEI.23.1.013012

Abstract

In order to reduce the computational complexity for the high-efficiency video coding standard, an algorithm is proposed. First, we create a histogram based on the distribution of gray values in each coding tree unit. By using a self-correlation function of the gray histogram, we can skip some of the depth levels that are unnecessary. Second, the relationship between the sum of absolute transformed difference (SATD) and coding unit (CU) is used to decide an early termination for the split of the current CU, if the minimum SATD of this CU is smaller than a threshold. Experimental results show that the proposed algorithm can save an average of 38.39% of the encoding time with negligible degradation of coding efficiency compared with the reference model HM10.1.

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Dongxu Xu, Qiwei Lin, and Xiaohui Dong "Fast intracoding unit size decision algorithm for high-efficiency video coding," Journal of Electronic Imaging 23(1), 013012 (4 February 2014). https://doi.org/10.1117/1.JEI.23.1.013012

Published: 4 February 2014

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