QQ客服 官方微博 反馈留言

	Improved spatial aided low delay Wyner-Ziv video coding by wavelet shrinkage
	Wu, Bo ; Zhang, Nan ; Ma, Siwei ; Gao, Wen
	2011
英文摘要	To tackle the problem of lacking auxiliary information while generating the side information, we have proposed a novel spatial aided low delay Wyner-Ziv video coding scheme in which the wavelet transformation is applied to generate the auxiliary information. However, there exists an inefficiency that lowers the coding performance. The inefficiency is that many wavelet coefficients having very small absolute value in the high-pass subbands and these small coefficients decrease the correlation between the source and the side information. The diminished correlation makes the bit error rate increased sharply and declines the performance of the channel decoding. This inefficiency is a widespread phenomenon among the wavelet based Wyner-Ziv video coding schemes. Therefore, we propose a scheme to remove these noises like coefficients in high-pass subbands by using a wavelet shrinkage method. In our method, a soft-thresholding operator which is based on the statistical properties of the high-pass coefficients is proposed. The result reveals that the correlation between the smoothed WZ frame and the side information is improved by using the wavelet shrinkage method. Accordingly, the R-D performance is also improved. ? 2011 IEEE.; EI; 0
语种	英语
DOI标识	10.1109/VCIP.2011.6116052
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/327364]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Wu, Bo,Zhang, Nan,Ma, Siwei,et al. Improved spatial aided low delay Wyner-Ziv video coding by wavelet shrinkage. 2011-01-01.

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。