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首页> 外文会议>International Computer Engineering Conference >Adaptive error concealment algorithm for multiview coding based on lost MBs sizes and using dynamic selection of lower candidates MBs
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Adaptive error concealment algorithm for multiview coding based on lost MBs sizes and using dynamic selection of lower candidates MBs

机译：基于丢失的MB大小并使用较低候选MB的动态选择的多视图编码自适应错误隐藏算法

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摘要

Multi-view video sequences are compressed using advanced high compression ratio tools called H.264/AVC multi-view coding (MVC). MVC is very sensitive to errors due to its structure as a result Error Concealment (EC) algorithms are developed at the decoder to improve the quality of decoded MVC frames. In this paper efficient multi-view EC algorithms are proposed for intra and inter MBs exploiting the spatial, temporal and interview information of neighboring MBs. For Intra MBs, Spatial-Inter View (SIV) algorithm is proposed. For inter MBs, the proposed algorithm is adaptively changed according to the lost MB size. In addition, the algorithm dynamically candidates MBs according to the current used view. Then the inter 16×16 MBs are enhanced by a new method called weighted block motion and disparity concealment (WBMDC). The other inter MBs types are enhanced using a proposed method called The Overlapped Block Motion Compensation (OBMC). It is shown that the proposed algorithm leads to better subjective quality in addition higher PSNR values. With applying the proposed algorithms, the gain is improved by up to 12.84 dB and 1.1 dB comparing to no applying any EC algorithms and applying normal EC algorithm respectively at 22% Loss Rate (LR).
机译：多视图视频序列使用称为H.264 / AVC多视图编码（MVC）的高级高压缩率工具进行压缩。由于MVC的结构，MVC对错误非常敏感，因此在解码器处开发了错误隐藏（EC）算法以提高解码MVC帧的质量。在本文中，提出了一种有效的多视图EC算法，该算法利用内部MB的空间，时间和采访信息为内部MB和内部MB提供了信息。对于内部MB，提出了空间间视图（SIV）算法。对于中间MB，根据丢失的MB大小自适应地更改所提出的算法。另外，该算法根据当前使用的视图动态地候选MB。然后，通过称为加权块运动和视差隐藏（WBMDC）的新方法增强了16×16 MB的间隔。使用称为“重叠块运动补偿”（OBMC）的建议方法可以增强其他MB间类型。结果表明，所提出的算法除了具有较高的PSNR值外，还可以带来更好的主观质量。与不采用任何EC算法和分别采用22％丢失率（LR）的常规EC算法相比，采用所提出的算法，增益分别提高了12.84 dB和1.1 dB。

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