基于图像块码本模型的监控视频背景参考帧生成方法  

Background reference frame generation method for surveillance video based on image block codebook model

作　　者：张伟 王宇 陈新怡 王延文 景庆阳 雷为民 ZHANG Wei;WANG Yu;CHEN Xinyi;WANG Yanwen;JING Qingyang;LEI Weimin(School of Computer Science and Engineering,Northeastern University,Shenyang 110169,China)

机构地区：[1]东北大学计算机科学与工程学院,辽宁沈阳110169

出　　处：《通信学报》2023年第1期129-141,共13页Journal on Communications

基　　金：国家重点研发计划基金资助项目(No.2018YFB1702000);中央高校基本科研业务费专项资金资助项目(No.N2216010)。

摘　　要：为解决背景参考帧受前景污染严重,以及传输背景参考帧导致的码率突增等问题,针对背景较稳定的监控视频,提出一种以图像块为基本单元的渐进式背景参考帧生成方法。所提方法建立了基于聚类的图像块码本模型,利用基于感知哈希的码元匹配,将视频序列中处于同一位置的图像块进行聚类;利用背景图像区域特性准确检测背景码元;利用码本模型从不同帧中检测出背景图像块生成完整的背景参考帧。实验结果表明,所提方法编码效率相比标准HM16.20在亮度分量上提升17.89%,有效提升了背景参考帧生成质量,且时间复杂度满足视频实时性需求。To solve the problems that the background reference frames are seriously contaminated by the foreground, and the bit rate increases suddenly incurred by the one-time transmission of the background frames, a progressive background frame generation method with image block as the basic unit was proposed for surveillance video application. An image block codebook model based on clustering was formulated. The image blocks at the same position in the video sequence were effectively clustered by using perceptual hash-based element matching. The background symbol was accurately detected by using the characteristics of the background image area. A complete background frame was produced by extracting the background blocks in different frames based on the codebook model. Experimental results demonstrate that the proposed method achieves 17.89% coding efficiency for luma component compared with standard HM16.20, and can effectively improve the quality of the produced background reference frame. Besides, the proposed method complexity meets the real-time requirements of video applications.

关 键 词：监控视频 背景建模 视频编码 码本模型 背景参考帧 

分 类 号：TN92[电子电信—通信与信息系统]