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基于双边信息的残差分布式压缩视频感知

DOI: 10.3724/SP.J.1004.2014.02316, PP. 2316-2323

Keywords: 视频编码,压缩感知,分布式压缩视频编码,残差编码

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Abstract:

?压缩感知(CS)是在低于奈奎斯特率条件下获取和重构稀疏信号的新兴技术,在图像和视频获取和处理中有巨大的发展潜力.为了有效提高被测信号的稀疏性和重构效率,本文提出一种基于双边信息的残差分布式压缩视频感知(RDCVS-DSI)编解码模型.该模型利用了图像自身的频域特性和邻近帧之间的相关性,以低质量的视频帧作为编解码的第一边信息,解码端利用关键帧运动估计和运动补偿技术生成非关键帧的第二边信息.通过性能分析和仿真测试表明,该RDCVS-DSI模型能够在较低复杂度条件下,高保真地重建视频序列.与以前的压缩视频感知工作对比,重构帧的平均峰值性噪比达到1-5dB的增益,重构速度接近于复杂度最低的DCVS.

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