东北大学学报(自然科学版) ›› 2021, Vol. 42 ›› Issue (1): 31-36.DOI: 10.12068/j.issn.1005-3026.2021.01.005

• 信息与控制 • 上一篇    下一篇

基于背景模型的AVS-S编码

桑爱军1, 于欢1,2, 张汉宇1   

  1. (1.吉林大学 通信工程学院, 吉林 长春130022; 2.上海无线电设备研究所, 上海201109 )
  • 出版日期:2021-01-15 发布日期:2021-01-13
  • 通讯作者: 桑爱军
  • 作者简介:桑爱军(1973-),女,山东莱州人,吉林大学教授.
  • 基金资助:
    国家自然科学基金重点资助项目(61631009); 吉林省自然科学基金资助项目(20200201295JC).

AVS-S Coding Based on Background Model

SANG Ai-jun1, YU Huan1,2, ZHANG Han-yu1   

  1. 1. College of Telecommunication Engineering, Jilin University, Changchun 130022, China; 2. Shanghai Radio Equipment Research Institute, Shanghai 201109, China.
  • Online:2021-01-15 Published:2021-01-13
  • Contact: SANG Ai-jun
  • About author:-
  • Supported by:
    -

摘要: 为提高监控视频的编码效率,在AVS监控伸展档次的编码框架下,提出一种新的背景帧更新方法,即迭代更新均值法.根据某一像素在前景区域和背景区域出现频率不同的原理来确定该像素点在某一帧中的性质.通过在监控视频Crossroad,Overbridge和Classover的测试比较,得到不同性质的像素点对应的背景模型像素值.结果表明,慢速运动物体难以从背景中消除的缺点得到一定程度的改进,同时加强了背景信息的完整性和提高了背景帧的质量.在同等码率和相同峰值信噪比的条件下,相比于AVS基准档次方法平均节省码率为43.283%,平均提高峰值信噪比1.186dB,其监控视频的编码效率也得到了提升.

关键词: 背景帧更新方法;背景模型;监控视频;AVS监控伸展档次;AVS基准档次

Abstract: In order to improve the coding efficiency of surveillance video, a new background frame update method was proposed, namely, iterative update mean value method, under the coding framework of AVS surveillance extension grade. The nature of the pixel in a certain frame was determined according to the principle of different frequencies of occurrence of a certain pixel in the foreground area and in the background area. Through the test comparison of the surveillance video Crossroad, Overbridge and Classover, the pixel values of the background model corresponding to the pixels of different nature were obtained. The results showed that the shortcomings that slow moving objects are difficult to eliminate from the background are improved to a certain extent in this experiment. At the same time, the integrity of the background information is strengthened and the quality of the background frame is improved. Under the conditions of the same bit rate and the same peak signal-to-noise ratio, compared with the AVS benchmark method, the average code saving rate is 43.283% and the peak signal-to-noise ratio is increased by 1.186dB on average. The coding efficiency of its surveillance video is also improved.

Key words: background frame update method; background model; surveillance video; monitoring the AVS stretch grade; AVS benchmark grade

中图分类号: