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    • 2. 发明授权
    • Wyner-Ziv coding with multiple side information
    • Wyner-Ziv编码与多方信息
    • US08340192B2
    • 2012-12-25
    • US12047317
    • 2008-03-12
    • Yan LuFeng WuMei GuoShipeng Li
    • Yan LuFeng WuMei GuoShipeng Li
    • H04N11/04
    • H03M7/30H03M13/2957H03M13/6312
    • A Wyner-Ziv coding scheme jointly utilizes multiple side information at the decoder is described. A new probability model is introduced based on an extended turbo decoding trellis, so that the transitional probability is calculated from the probabilities conditioned on multiple side information. The proposed scheme handles multiple side information in a multi-dimensional manner to potentially achieve coding performance better than either selecting one side information or generating a single side information by averaging several side information. When the decoder receives multiple streams of parity bits, the conditional probabilities on the parity bits from the multiple streams all contribute in turbo decoding. The errors existing in some of the streams can be automatically eliminated during the decoding process.
    • 描述了在解码器处共同利用多边信息的Wyner-Ziv编码方案。 基于扩展turbo解码网格引入新的概率模型,从而根据多边信息的概率计算过渡概率。 所提出的方案以多维方式处理多个侧面信息,以便比选择一个侧面信息或通过平均多个边缘信息来生成单个侧面信息来潜在地实现编码性能。 当解码器接收到多个奇偶校验位流时,来自多个流的奇偶校验位的条件概率在turbo解码中都有贡献。 在解码过程中可以自动消除一些流中存在的错误。
    • 3. 发明申请
    • Request Bits Estimation for a Wyner-Ziv Codec
    • Wyner-Ziv编解码器的请求位估计
    • US20080079612A1
    • 2008-04-03
    • US11537947
    • 2006-10-02
    • Yan LuMei GuoFeng WuShipeng Li
    • Yan LuMei GuoFeng WuShipeng Li
    • H03M7/00
    • H03M7/30H04N19/395
    • Request bits estimation for a Wyner-Ziv codec is described. In one aspect, and prior to communicating Wyner-Ziv parity bits to a Wyner-Ziv decoder, an estimated total number of parity bits to send to the Wyner-Ziv decoder are determined. This estimated number of parity bits allows the Wyner-Ziv decoder to reconstruct a frame of different coded content using the Wyner-Ziv parity bits such that the reconstructed frame will meet particular quality criteria. This estimated number of parity bits is determined independent of a request-bits feedback loop between the Wyner-Ziv coder and the Wyner-Ziv decoder. The estimated number of parity bits is communicated to the Wyner-Ziv decoder for reconstruction and presentation of the frame to a user.
    • 描述了Wyner-Ziv编解码器的请求比特估计。 在一个方面中,并且在将Wyner-Ziv奇偶校验位传送到Wyner-Ziv解码器之前,确定发送到Wyner-Ziv解码器的估计的奇偶校验位数。 该估计的奇偶校验位数允许Wyner-Ziv解码器使用Wyner-Ziv奇偶校验位来重建不同编码内容的帧,使得重建的帧将满足特定的质量标准。 独立于Wyner-Ziv编码器和Wyner-Ziv解码器之间的请求位反馈环路来确定该估计的奇偶校验位数。 将估计的奇偶校验位数传送给Wyner-Ziv解码器,以重构并向用户呈现帧。
    • 4. 发明授权
    • Request bits estimation for a Wyner-Ziv codec
    • 为Wyner-Ziv编解码器请求比特估计
    • US07388521B2
    • 2008-06-17
    • US11537947
    • 2006-10-02
    • Yan LuMei GuoFeng WuShipeng Li
    • Yan LuMei GuoFeng WuShipeng Li
    • H03M7/34
    • H03M7/30H04N19/395
    • Request bits estimation for a Wyner-Ziv codec is described. In one aspect, and prior to communicating Wyner-Ziv parity bits to a Wyner-Ziv decoder, an estimated total number of parity bits to send to the Wyner-Ziv decoder are determined. This estimated number of parity bits allows the Wyner-Ziv decoder to reconstruct a frame of different coded content using the Wyner-Ziv parity bits such that the reconstructed frame will meet particular quality criteria. This estimated number of parity bits is determined independent of a request-bits feedback loop between the Wyner-Ziv coder and the Wyner-Ziv decoder. The estimated number of parity bits is communicated to the Wyner-Ziv decoder for reconstruction and presentation of the frame to a user.
    • 描述了Wyner-Ziv编解码器的请求比特估计。 在一个方面中,并且在将Wyner-Ziv奇偶校验位传送到Wyner-Ziv解码器之前,确定发送到Wyner-Ziv解码器的估计的奇偶校验位数。 该估计的奇偶校验位数允许Wyner-Ziv解码器使用Wyner-Ziv奇偶校验位来重建不同编码内容的帧,使得重建的帧将满足特定的质量标准。 独立于Wyner-Ziv编码器和Wyner-Ziv解码器之间的请求位反馈环路来确定该估计的奇偶校验位数。 将估计的奇偶校验位数传送给Wyner-Ziv解码器,以重构并向用户呈现帧。
    • 5. 发明申请
    • Wyner-Ziv Coding with Multiple Side Information
    • Wyner-Ziv编码与多边信息
    • US20080291065A1
    • 2008-11-27
    • US12047317
    • 2008-03-12
    • Yan LuFeng WuMei GuoShipeng Li
    • Yan LuFeng WuMei GuoShipeng Li
    • H03M7/00
    • H03M7/30H03M13/2957H03M13/6312
    • A Wyner-Ziv coding scheme jointly utilizes multiple side information at the decoder is described. A new probability model is introduced based on an extended turbo decoding trellis, so that the transitional probability is calculated from the probabilities conditioned on multiple side information. The proposed scheme handles multiple side information in a multi-dimensional manner to potentially achieve coding performance better than either selecting one side information or generating a single side information by averaging several side information. When the decoder receives multiple streams of parity bits, the conditional probabilities on the parity bits from the multiple streams all contribute in turbo decoding. The errors existing in some of the streams can be automatically eliminated during the decoding process.
    • 描述了在解码器处共同利用多边信息的Wyner-Ziv编码方案。 基于扩展turbo解码网格引入新的概率模型,从而根据多边信息的概率计算过渡概率。 所提出的方案以多维方式处理多个侧面信息,以便比选择一个侧面信息或通过平均多个边缘信息来生成单个侧面信息来潜在地实现编码性能。 当解码器接收到多个奇偶校验位流时,来自多个流的奇偶校验位的条件概率在turbo解码中都有贡献。 在解码过程中可以自动消除一些流中存在的错误。
    • 8. 发明授权
    • Method and apparatus of improved intra prediction mode coding
    • 改进的帧内预测模式编码的方法和装置
    • US08755435B2
    • 2014-06-17
    • US13171858
    • 2011-06-29
    • Mei GuoXun GuoShaw-Min Lei
    • Mei GuoXun GuoShaw-Min Lei
    • H04N7/12
    • H04N19/182H04N19/11H04N19/13H04N19/186
    • A method and apparatus for improved intra chroma prediction mode coding are disclosed. Intra prediction exploits the spatial correlation within a picture or within a picture region. In practice, a picture is divided into blocks and the intra mode prediction is performed on a block basis. In newer coding systems, multiple intra coding modes such as Vertical mode, Horizontal mode, DC mode and Diagonal mode, have been used to improve the coding efficiency of intra coding. Furthermore, a Luma_mode has also been used in intra prediction of chroma component to further improve the performance in the High Efficiency Video Coding (HEVC) standard being developed. However, the mode selection information for intra prediction has to be conveyed to the decoder for proper operation. Spatial features in a picture often exist in both luma and chroma components. The intra luma prediction mode and intra chroma prediction mode will have high probability to be the same. Accordingly, an embodiment according to the present invention adaptively assigns variable length codes to a set of mode symbols associated with intra chroma prediction by assigning a shortest code to the Luma_mode. Luma_mode not only can be the best luma mode of the corresponding luma block but also can be selected from several corresponding luma modes. The maximum length of chroma prediction codes is decreased by one bit when Luma_mode is equal to one of frequent modes. The coding efficiency of arithmetic coding of chroma prediction codes is further improved by selecting the context upon neighboring blocks.
    • 公开了一种用于改进的帧内色度预测模式编码的方法和装置。 帧内预测利用图片内或图片区域内的空间相关性。 实际上,将图像划分成块,并且以块为基础执行帧内模式预测。 在较新的编码系统中,已经使用诸如垂直模式,水平模式,直流模式和对角线模式的多个帧内编码模式来提高帧内编码的编码效率。 此外,Luma_mode也被用于色度分量的帧内预测,​​以进一步提高正在开发的高效率视频编码(HEVC)标准中的性能。 然而,用于帧内预测的模式选择信息必须被传送到解码器以进行正确的操作。 图片中的空间特征通常存在于亮度和色度分量中。 内部亮度预测模式和内部色度预测模式将具有相同的概率。 因此,根据本发明的实施例通过向Luma_mode分配最短代码来自适应地将可变长度代码分配给与帧内色度预测相关联的一组模式符号。 Luma_mode不仅可以是对应亮度块的最佳亮度模式,还可以从几个相应的亮度模式中选择。 当Luma_mode等于频繁模式之一时,色度预测码的最大长度减少一位。 通过选择相邻块的上下文,进一步提高色度预测码的算术编码的编码效率。