A Fast Rough Mode Decision Algorithm for HEVC

Wei-Xin Yao, Dan Yang, Gui-Fu Lu and Jun Wang
Volume: 15, No: 3, Page: 492 ~ 499, Year: 2019
10.3745/JIPS.01.0042
Keywords: HEVC, Intra Prediction, Rough Mode Decision, Video Coding
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Abstract
HEVC is the high efficiency video coding standard, which provides better coding efficiency contrasted with the other video coding standard. But at the same time the computational complexity increases drastically. Thirtyfive kinds of intra-prediction modes are defined in HEVC, while 9 kinds of intra prediction modes are defined in H.264/AVC. This paper proposes a fast rough mode decision (RMD) algorithm which adopts the smoothness of the up-reference pixels and the left-reference pixels to decrease the computational complexity. The three step search method is implemented in RMD process. The experimental results compared with HM13.0 indicate that the proposed algorithm can save 39.7% of the encoding time, while Bjontegaard delta bitrate (BDBR) is increased slightly by 1.35% and Bjontegaard delta peak signal-to-noise ratio (BDPSNR) loss is negligible.

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Cite this article
IEEE Style
W. Yao, D. Yang, G. Lu and J. Wang, "A Fast Rough Mode Decision Algorithm for HEVC," Journal of Information Processing Systems, vol. 15, no. 3, pp. 492~499, 2019. DOI: 10.3745/JIPS.01.0042.

ACM Style
Wei-Xin Yao, Dan Yang, Gui-Fu Lu, and Jun Wang. 2019. A Fast Rough Mode Decision Algorithm for HEVC, Journal of Information Processing Systems, 15, 3, (2019), 492~499. DOI: 10.3745/JIPS.01.0042.