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公开(公告)号:US20070189392A1
公开(公告)日:2007-08-16
申请号:US10591939
申请日:2005-03-01
CPC分类号: H04N19/59 , H04N19/117 , H04N19/129 , H04N19/132 , H04N19/136 , H04N19/16 , H04N19/174 , H04N19/176 , H04N19/44 , H04N19/46 , H04N19/51 , H04N19/61 , H04N19/70 , H04N19/82 , H04N19/86
摘要: There is provided a video encoder, video decoder and corresponding encoding and decoding methods for respectively encoding and decoding video signal data for an image slice. The video encoder includes a slice prediction residual downsampler for downsampling a prediction residual of at least a portion of the image slice prior to transformation and quantization of the prediction residual. The video decoder includes a prediction residual upsampler for upsampling a prediction residual of the image slice.
摘要翻译: 提供了一种用于分别对图像切片的视频信号数据进行编码和解码的视频编码器,视频解码器和相应的编码和解码方法。 视频编码器包括用于在变换和预测残差的量化之前对图像片段的至少一部分的预测残差进行下采样的片预测残差下采样器。 视频解码器包括用于对图像切片的预测残差进行上采样的预测残差上采样器。
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公开(公告)号:US20090225832A1
公开(公告)日:2009-09-10
申请号:US11658482
申请日:2004-07-29
IPC分类号: H04N7/26
CPC分类号: H04N19/159 , H04N19/895
摘要: Using different error concealment techniques for coded pictures that undergo display and those that undergo storage as a reference picture improves the quality of error concealment. A concealment technique optimized for use in real time will provide the best visual quality for pictures that undergo display whereas a concealment technique optimized to recover lost data improves the quality of stored reference pictures.
摘要翻译: 对于经历显示的编码图像和经历存储作为参考图像的编码图像使用不同的错误隐藏技术提高了错误隐藏的质量。 优化用于实时的隐藏技术将为经过显示的图片提供最佳的视觉质量,而针对恢复丢失的数据优化的隐藏技术可提高存储的参考图片的质量。
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公开(公告)号:US20080225946A1
公开(公告)日:2008-09-18
申请号:US10589640
申请日:2004-02-27
申请人: Peng Yin , Cristina Gomila , Jill Macdonald Boyce
发明人: Peng Yin , Cristina Gomila , Jill Macdonald Boyce
IPC分类号: H04N7/32
CPC分类号: H04N19/895 , H04N19/142 , H04N19/51
摘要: A decoder (10) conceals errors in a coded image comprised of a stream of macroblocks by examining each macroblock for pixel errors. If such errors exist, then each of at least two macroblocks pictures from each of two different pictures are weighted to yield a weighted prediction (WP) for estimating missing/corrupt values to conceal the macroblock found to have pixel errors.
摘要翻译: 解码器(10)通过检查每个宏块的像素误差来隐藏由宏块流组成的编码图像中的错误。 如果存在这样的错误,则对两个不同图像中的每一个的至少两个宏块图像中的每一个进行加权,以产生用于估计丢失/损坏值的加权预测(WP),以隐藏发现具有像素误差的宏块。
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