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首页> 外文会议>Visual Communications and Image Processing 2007 pt.2; Proceedings of SPIE-The International Society for Optical Engineering; vol.6508 pt.2; Electronic Imaging Science and Technology >A SIMPLE REVERSED-COMPLEXITY WYNER-ZIV VIDEO CODING MODE BASED ON A SPATIAL REDUCTION FRAMEWORK
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A SIMPLE REVERSED-COMPLEXITY WYNER-ZIV VIDEO CODING MODE BASED ON A SPATIAL REDUCTION FRAMEWORK

机译：基于空间缩减框架的简单逆复杂度Wyner-ZIV视频编码模式

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摘要

A spatial-resolution reduction based framework for incorporation of a Wyner-Ziv frame coding mode in existing video codecs is presented, to enable a mode of operation with low encoding complexity. The core Wyner-Ziv frame coder works on the Laplacian residual of a lower-resolution frame encoded by a regular codec at reduced resolution. The quantized transform coefficients of the residual frame are mapped to cosets to reduce the bit-rate. A detailed rate-distortion analysis and procedure for obtaining the optimal parameters based on a realistic statistical model for the transform coefficients and the side information is also presented. The decoder iteratively conducts motion-based side-information generation and coset decoding, to gradually refine the estimate of the frame. Preliminary results are presented for application to the H.263+ video codec.
机译：提出了一种基于空间分辨率降低的框架，用于将Wyner-Ziv帧编码模式合并到现有视频编解码器中，以实现具有低编码复杂度的操作模式。核心的Wyner-Ziv帧编码器处理的是常规编解码器以降低的分辨率编码的较低分辨率帧的拉普拉斯残差。残余帧的量化的变换系数被映射到陪集以降低比特率。还介绍了详细的速率失真分析和基于变换系数和辅助信息的实际统计模型获得最佳参数的过程。解码器迭代地执行基于运动的辅助信息生成和陪集解码，以逐步完善帧的估计。初步结果已提交给H.263 +视频编解码器。

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