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Fast intra-mode decision method for luma and chroma blocks for H.264/AVC

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Abstract

This paper presents a fast and efficient intra-mode decision method for H.264/AVC. The proposed method makes use of several directional measures that are based not only on the pixels in an image block but also on the neighboring pixels. As a result, the proposed method can predict the dominant direction of an image block more accurately than the other methods. It also considers various kinds of candidate modes, while efficiently controlling the number of modes to be examined. In the chroma mode decision, the proposed method uses the correlation between the chroma mode and the 16 × 16 luma mode to reduce the encoding complexity. By combining all these techniques in an efficient way, the proposed method not only improves the coding performance, but also reduces the encoding time significantly compared to conventional intra-mode decision methods.

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Acknowledgments

This research was supported by Basic Science Research Program through the NRF of Korea funded by the Ministry of Education (No. 2010-0013163), by the Human Resources Development program (No. 20124030200060) of the KETEP grant funded by the Korea government Ministry of Trade, Industry and Energy, and by the MSIP, Korea, under the ITRC support program (NIPA-2013-H0301-13-1002) supervised by the NIPA.

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  1. School of Electrical and Electronics Engineering, Chung-Ang University, 221 HeukSeok-Dong DongJak-Gu, Seoul, 156-756, South Korea

    Hyungwook Kim, Sojeong Lim & Sungwook Yu

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  1. Hyungwook Kim
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  2. Sojeong Lim
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  3. Sungwook Yu
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Correspondence to Sungwook Yu.

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Kim, H., Lim, S. & Yu, S. Fast intra-mode decision method for luma and chroma blocks for H.264/AVC. Multimed Tools Appl 74, 4641–4653 (2015). https://doi.org/10.1007/s11042-013-1827-8

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