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基于紋理相似性的高效視頻編碼幀間預(yù)測優(yōu)化算法

吳憲云,  高媛媛,  劉凱,  李云松

吳憲云, 高媛媛, 劉凱, 李云松. 基于紋理相似性的高效視頻編碼幀間預(yù)測優(yōu)化算法[J]. 電子與信息學報, 2016, 38(3): 655-660. doi: 10.11999/JEIT150672
引用本文: 吳憲云, 高媛媛, 劉凱, 李云松. 基于紋理相似性的高效視頻編碼幀間預(yù)測優(yōu)化算法[J]. 電子與信息學報, 2016, 38(3): 655-660. doi: 10.11999/JEIT150672
WU Xianyun, GAO Yuanyuan, LIU Kai, LI Yunsong. An Optimized Inter-prediction Algorithm for High Efficiency Video Coding Based on Texture Similarity[J]. Journal of Electronics & Information Technology, 2016, 38(3): 655-660. doi: 10.11999/JEIT150672
Citation: WU Xianyun, GAO Yuanyuan, LIU Kai, LI Yunsong. An Optimized Inter-prediction Algorithm for High Efficiency Video Coding Based on Texture Similarity[J]. Journal of Electronics & Information Technology, 2016, 38(3): 655-660. doi: 10.11999/JEIT150672

基于紋理相似性的高效視頻編碼幀間預(yù)測優(yōu)化算法

doi: 10.11999/JEIT150672 cstr: 32379.14.JEIT150672
  • 2.

    (西安電子科技大學綜合業(yè)務(wù)網(wǎng)理論及關(guān)鍵技術(shù)國家重點實驗室 西安 710071) ②(西安電子科技大學計算機學院 西安 710071)

基金項目: 

中國博士后科學基金(2013M540735)，國家自然科學基金(61301291, 61301287, 61222101)，111工程(B08038)，陜西省科技創(chuàng)新團隊項目，中央高?；究蒲袠I(yè)務(wù)基金

An Optimized Inter-prediction Algorithm for High Efficiency Video Coding Based on Texture Similarity

  • 2.

    (State Key Laboratory of Integrated Services Networks, Xidian University, Xi&rsquo

Funds: 

China Postdoctoral Science Foundation (2013M540735), The National Natural Science Foundation of China (61301291, 61301287, 61222101), 111 Project (B08038), Shaanxi Province Science and Technology Innovation Team, Central University Basic Research Fund

  • 摘要: 為了提高高效率視頻編碼(HEVC)的編碼效率，該文對幀間預(yù)測算法進行優(yōu)化，提出一種基于紋理相似性的快速深度判決算法。隨著視頻分辨率的提高，視頻序列中的空域冗余也隨之增加，HEVC通過增加編碼塊尺寸來提高預(yù)測效率，代價就是編碼復雜度的急劇增加。通過對視頻序列分析可知，圖像中的平滑區(qū)域與細節(jié)區(qū)域在相鄰幀中存在很大的相關(guān)性。該文利用相鄰已編碼幀的相鄰編碼塊的深度信息，來快速判決當前待編碼塊的深度信息。對于平滑區(qū)域，快速判決待編碼最大編碼單元的最大深度，以減少小塊編碼單元的模式判決；對于細節(jié)區(qū)域，快速判決待編碼最大編碼單元的最小深度，以減少大塊編碼單元的模式判決。實驗結(jié)果表明，與原始的HEVC算法相比，該文所提算法編碼比特率平均增加約0.13%以內(nèi)，PSNR的平均降幅為0.09 dB，算法運行時間平均減少了約50%。
    Abstract: In this paper, an optimized inter-prediction algorithm is proposed for High Efficiency Video Coding (HEVC) based on video texture similarity. With the increasing of the video resolution, spatial statistical redundancy is increased meanwhile. HEVC improves the coding efficiency by using large coding units, therefore increases the coding complexity significantly. For video sequence, the flat area and texture area are high correlated between adjacent frames. In this paper, previous encoded depth or split depth information is used to determine fast the depth of current encoding coding unit. For flat area, the algorithm predicts the maximum depth to reduce the mode decision for smaller coding units. For texture area, the algorithm can fast determine the minimum depth which can save the mode decision for larger coding units. Experimental result shows that the proposed algorithm can reduce 50% coding complexity compared with original HEVC algorithm. Meanwhile, the average PSNR only decreases 0.09 dB and the average coding rate is increased about 0.13%.
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  • SULLIVAN G, OHM J R, HAN W J, et al. Overview of the high efficiency video coding (Hevc) standard[J]. IEEE Transactions on Circuits and Systems for Video Technology, 2012, 22(12): 1649-1668. doi: 10.1109/TCSVT.2012.2221191.
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    LI Wei, ZHANG Hexian and YANG Fuzheng. A fast mode decision algorithm for high efficiency video coding[J]. Journal of Xian Jiaotong University, 2013, 47(8): 104-110.
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    JIANG J, GUO Baolong, MO Wei, et al. Fast intra coding algorithm using smooth region detection for HEVC[J]. Journal of Xidian University, 2013, 40(3): 194-200.
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    李雙十. 基于視頻統(tǒng)計特性的HEVC快速幀間預(yù)測算法研究[D]. [碩士論文], 西安電子科技大學, 2014.
    LI Shuangshi. A study of fast inter prediction algorithm based on video statistical properties for HEVC[D]. [Master dissertation], Xidian University, 2014
    HOU Xiaotao and XUE Yonglin. Fast coding unit partitioning algorithm for HEVC[C]. 2014 IEEE International Conference on Consumer Electronics (ICCE), Seoul, Korea, 2014: 7-10 . doi: 10.1109/ICCE.2014.6775886.
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    LI Yuan, HE Xiaohai, ZHONG Guoyun, et al. A fast inter-frame prediction unit mode decision algorithm for high efficiency video coding based on temporal correlation[J]. Journal of Electronics Information Technology, 2013, 35(10): 2365-2370. doi: 10.3724/SP.J.1146.2013.00028.
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出版歷程
  • 收稿日期:  2015-06-04
  • 修回日期:  2015-11-25
  • 刊出日期:  2016-03-19

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