基于H.264的感兴趣区域自适应压缩编码技术  

Novel Adaptive H.264 Method Based on Region of Interest

作　　者：马文琪[1] 杨华[1] 尹海燕[1] 

机构地区：[1]上海交通大学电子工程系图像通信研究所,上海200240

出　　处：《电视技术》2013年第3期14-16,85,共4页Video Engineering

基　　金：国家自然科学基金项目(61102099);上海市科委项目(10231204002;11231203102)

摘　　要：针对公安监控中的需求,提出一种基于感兴趣区域(ROI)的自适应编码算法,通过均值法背景建模技术提取ROI后,针对不同的空间区域采用分级编码策略。同时采用一种基于邻居宏块的性能补偿方案,减小ROI宏块漏检率,同时降低因采用分级编码策略而产生的块效应影响。实验结果表明,该算法在保证ROI编码质量的前提下,能够有效降低系统码率。To satisfy the requirement of the security monitor system, a novel adaptive H. 264 method based on the Region of Interest （ROI） is pro- posed. The ROI is firstly extracted via background modeling method and then the frame is encoded with spatial scalability. Meanwhile, to decline the o- mission ratio of the ROI and reduce the influence of the blocking artifact, a compensation scheme based on the neighborhood macro blocks is applied. Experiment shows that the proposed encoding scheme could decrease the bitrate while keep the encoding quality in a proper level.

关 键 词：H 264 分级编码 ROI 

分 类 号：TN919.8[电子电信—通信与信息系统]