QQ客服 官方微博 反馈留言

	Side information enhancement via texture and motion activity analysis in distributed video coding
	Liu, Xianming ; Zhao, Debin ; Ma, Siwei ; Gao, Wen
	2010
英文摘要	This paper investigates how to exploit the artifacts constraint to enhance the quality of side information (SI) in distributed video coding (DVC). The idea originates from the observation that there are usually some regions shown as artifacts in the interpolated SI, which seriously degrade the overall performance of the DVC system, especially when the GOP size is large. Encouraged by the previous work about the backward channel in the literature, we propose a simple and effective DVC scheme based on artifact detection and removal. On one hand, texture analysis via dynamic range and local entropy is utilized to determine artifact regions in spatial domain. On the other hand, motion activity evaluation is used to determine artifact regions in temporal domain, and temporal local entropy difference is further employed to eliminate the effect of other factors like brightness variance. After the artifact blocks are detected, we re-code them in intra mode and replace the co-located ones at the decoder side so that the quality of SI is enhanced. Experimental results demonstrate that the proposed SI quality enhancement technique is effective. ? 2010 SPIE.; EI; 0
语种	英语
DOI标识	10.1117/12.863452
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/329540]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Liu, Xianming,Zhao, Debin,Ma, Siwei,et al. Side information enhancement via texture and motion activity analysis in distributed video coding. 2010-01-01.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。