QQ客服 官方微博 反馈留言

	联合零向量预测的分布式视频编码框架
	巫戈明 ; 孙立峰 ; 钟玉琢 ; Wu Geming ; Sun Lifeng ; Zhong Yuzhuo
	2010-07-15 ; 2010-07-15
会议名称	第三届和谐人机环境联合学术会议（HHME2007）论文集 ; 第三届和谐人机环境联合学术会议（HHME2007） ; 中国山东济南 ; CNKI ; 山东大学计算机科学与技术学院
关键词	分布式视频编码 零向量预测 平滑质量 distributed video coding, zero vector motion compensation, consistent video quality TN919.81
其他题名	Distributed Video Coding Framework Combining Zero Vector Motion Compensation
中文摘要	分布式视频编码是一种新的编码方案,它的特点是具有低编码复杂度。本文提出了一个联合零向量预测的分布式视频编码方案。残差帧的离散余弦变换(DCT)系数的子集将被发送到解码端,这一额外的信息将被用于旁信息的生成,同时我们用一种方法可以很容易地利用这些系数子集自身所携带的信息。仿真结果表明该方案的性能可以接近H.263+,一个更重要的优点是该方案的视频解码输出的前后帧质量晃动非常小(在0.5dB以内)。; Distributed video coding (DVC) is a fundamentally new paradigm for video compression, which contains a light video encoder. In a DVC framework, frames are divided into intra frames and Wyner-Ziv frames, the intra frames are coded using conventional intra frame coder while the Wyner-Ziv frames are coded using Wyner-Ziv coder. The Wyner-Ziv encoder generates the syndrome bits of the Wyner-Ziv frames and sends them to the decoder. The decoder uses these syndrome bits to correct the virtual errors in the side information, i.e. an approximation of the current frame. Many works have been reported to reduce the gap between DVC and current video compression standards, but they only focus on the compression efficiency. This paper address the problem of quality control for DVC. In a DVC framework, the compression performance conflicts with the consistency of the video quality. A hybrid framework is proposed to solve this problem. Wyner-Ziv video coding and zero vector motion compensation are combined to keep the visual quality in consistency while maintaining satisfied compression efficiency. Simulation results show that the proposed framework can effectively reduce the variance of the video quality, and the compression performance is much better than pure DVC framework worked in constant quality mode.; 北京市自然科学基金No.4063037; 973项目No.2006CB303103资助
语种	中文 ; 中文
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/70087]
专题	清华大学
推荐引用方式 GB/T 7714	巫戈明,孙立峰,钟玉琢,等. 联合零向量预测的分布式视频编码框架[C]. 见:第三届和谐人机环境联合学术会议（HHME2007）论文集, 第三届和谐人机环境联合学术会议（HHME2007）, 中国山东济南, CNKI, 山东大学计算机科学与技术学院.

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。