摘要
在电影、电视剧中,由于拍摄手法的模式化导致了视频中存在大量的背景交替现象。这种背景交替过程中存在着类似监控视频的背景冗余。然而,目前并没有一个方法可以针对性的提高这一类视频的编码效率。针对该现象,提出了以交替背景模型为基础的HEVC编码方式。在编码过程中,自适应交替更新双重背景,并利用交替背景对CU进行分类后减少不必要的模式选择。实验结果表明,基于交替背景模型的HEVC编码方法成功提高了含有背景交替现象的影视作品的编码效率,并不影响不含背景交替现象的视频编码效率。
In tile fihn, TV series, due to the pattern of shooting techniques led to the existence of a large number of video background ahernating phenomenon. This kind of background alternation process has the similar background redundancy of monitoring video, and, at present there is not a method to be able to improve the coding efficiency of this kind of video. Aiming at this phenomenon, the paper puts forward the HEVC coding method based on alternating background model. In the encoding process, adaptive alternately update the double background, and use alternate background to categorize the CU to reduce the unnecessary mode selection. The experimental results show that the HEVC coding method based on the ahernating background model can improve the coding efficiency of the film and television works, which contains the background alternation, and does not affect the efficiency of the video coding without background ahernation.
作者
张啸云
王中元
黄震坤
Zhang Xiaoyun Wang Zhongyuan Huang Zhenkun(National Engineering Research Center for Multimedia Software, Computer School, Wuhan University, Wuhan 430072, Hubei, Chin)
出处
《计算机应用与软件》
2017年第3期131-135,288,共6页
Computer Applications and Software
基金
国家自然科学基金项目(61172173)
湖北省自然科学基金项目(2015CFB406)
关键词
HEVC
视频编码
背景提取
模式选择
背景交替
HEVC Video coding Background extraction Mode decision Background alternation
