广东工业大学学报 ›› 2020, Vol. 37 ›› Issue (02): 74-79.doi: 10.12052/gdutxb.190071

• 综合研究 • 上一篇    下一篇

基于运动特性的帧间预测模式快速选择算法

黄涛涛1, 刘立程1,2, 彭同壮1   

  1. 1. 广东工业大学 信息工程学院, 广东 广州 510006;
    2. 东源广工大现代产业协同创新研究院, 广东 河源 517500
  • 收稿日期:2019-05-20 出版日期:2020-03-10 发布日期:2020-02-12
  • 作者简介:黄涛涛(1993-),男,硕士研究生,主要研究方向为视频编解码算法
  • 基金资助:
    广州市科技计划项目（201802020008）

Fast Inter-prediction Mode Selection Algorithm Based on Motion Characteristics

Huang Tao-tao1, Liu Li-cheng1,2, Peng Tong-zhuang1   

  1. 1. School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, China;
    2. Synergy Innovation Institute for Modern Industries of GDUT, Heyuan 517500, China
  • Received:2019-05-20 Online:2020-03-10 Published:2020-02-12

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摘要： 高效视频编码（High Efficiency Video Coding，HEVC）大部分编码时间消耗在帧间预测，为了缩短编码时间，本文提出了一种基于CU （Coding Unit）块运动特性的帧间模式快速选择算法。首先，运用本文定义的运动特征对帧间预测模式分类；然后让CU进行尺寸N×N的帧间预测，获取子PU （Prediction Unit）块运动矢量，根据4个运动矢量的关系确定当前CU块的运动特性；最后通过运动特性确定要遍历的帧间预测模式，从而实现快速编码算法。实验结果表明，与HM16.15相比，本文提出的算法在低时延和随机接入配置下分别降低了31.6%和27.4%的编码时间，而编码器的编码性能基本不受影响。

关键词: 视频编解码, 高效视频编码, 帧间预测, 运动特性, 快速算法

Abstract: High Efficiency Video Coding (HEVC) consumes most of the coding time in inter-prediction. In order to shorten the encoding time,a fast inter-prediction mode selection algorithm is proposed based on CU's motion characteristics. Firstly, the inter-prediction mode is classified by using the motion characteristics defined in this study. Secondly, the CU performs inter-prediction of size N×N, and determines the current CU motion characteristics according to the relationship of the sub-PU (Prediction Unit) motion vectors. At last, the traversal range of inter-prediction mode is determined by the current CU motion characteristics. The experimental results demonstrate that compared with HM16.15, the proposed algorithm reduces by 31.6% the coding time in low delay configuration and by 27.4% in random access configuration, while the coding performance of the encoder is substantially unaffected.

Key words: video coding, high efficiency video coding, inter-prediction, motion characteristics, fast algorithm

中图分类号: 

  • TN919.81
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