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    • 3. 发明授权
    • Multi-source data encoding, transmission and decoding using Slepian-Wolf codes based on channel code partitioning
    • 使用基于通道码分割的Slepian-Wolf码进行多源数据编码,传输和解码
    • US07653867B2
    • 2010-01-26
    • US11086974
    • 2005-03-22
    • Vladimir M. StankovicAngelos D. LiverisZixiang XiongCostas N. Georghiades
    • Vladimir M. StankovicAngelos D. LiverisZixiang XiongCostas N. Georghiades
    • H03M13/00
    • H03M7/30H03M13/1102H03M13/1111H03M13/1194H03M13/2957H03M13/6312
    • System and method for Slepian-Wolf coding using channel code partitioning. A generator matrix is partitioned to generate multiple sub-matrices corresponding respectively to multiple correlated data sources. The partitioning is in accordance with a rate allocation among the correlated data sources. Corresponding parity matrices may be generated respectively from the sub-matrices, where each parity matrix is useable to encode correlated data for a respective correlated data source, resulting in respective syndromes, e.g., in the form of binary vectors. A common receiver may receive the syndromes and expand them to a common length by inserting zeros appropriately. The expanded syndromes may be vector summed (e.g., modulo 2), and a single channel decoding applied to determine a closest codeword, portions of whose systematic part may be multiplied by respective submatrices of the generator matrix, which products may be added to the respective expanded syndromes to produce estimates of the source data.
    • 使用信道码分割的Slepian-Wolf编码的系统和方法。 生成矩阵被分割以产生分别对应于多个相关数据源的多个子矩阵。 分区符合相关数据源之间的速率分配。 可以从子矩阵分别生成相应的奇偶校验矩阵,其中每个奇偶校验矩阵可用于对相应的相关数据源编码相关数据,从而产生例如二进制向量形式的相应校正子。 常见的接收器可以通过适当地插入零来接收综合征并将它们扩展到公共长度。 扩展的综合征可以是向量相加(例如,模2),并且应用单个信道解码以确定最接近的码字,其系统部分的部分可以乘以生成矩阵的相应子矩阵,哪些产品可以被添加到相应的 扩大综合征,以产生源数据的估计。
    • 4. 发明申请
    • Distributed joint source-channel coding of video using raptor codes
    • 使用猛禽码分布式联合源视频编码
    • US20080069242A1
    • 2008-03-20
    • US11517942
    • 2006-09-08
    • Qian XuVladimir M. StankovicZixiang Xiong
    • Qian XuVladimir M. StankovicZixiang Xiong
    • H04N7/26
    • H04N19/395H03M13/03H03M13/11H04N19/36H04N19/89
    • A video encoder system includes a base layer and an enhancement layer for encoding video data. The base layer encodes a reduced quality version of the video data to obtain base layer data. The enhancement layer encodes the video data using energy-concentrating transform operations, nested scalar quantization, and Raptor encoders. The base layer data and enhancement layer data are transmitted through a channel to a video decoder system. The decoder system decodes the base layer data to recover an estimate of the reduced quality video and decodes the enhancement layer data (using the reduced quality video as side information) to obtain blocks of coset indices. The decoder system then operates on the blocks of coset indices to generate estimates of the original video data.
    • 视频编码器系统包括用于编码视频数据的基本层和增强层。 基层对视频数据的降低质量版本进行编码以获得基本层数据。 增强层使用能量集中变换操作,嵌套标量量化和猛禽编码器编码视频数据。 基层数据和增强层数据通过一个信道发送到视频解码器系统。 解码器系统对基本层数据进行解码以恢复降低质量视频的估计,并且将增强层数据(使用缩减质量视频作为辅助信息)解码以获得陪集索引块。 然后,解码器系统对陪集索引的块进行操作以产生原始视频数据的估计。
    • 7. 发明授权
    • Layered Wyner-Ziv video coding for transmission over unreliable channels
    • 分层Wyner-Ziv视频编码,用于传输不可靠的频道
    • US08073052B1
    • 2011-12-06
    • US11494678
    • 2006-07-27
    • Qian XuVladimir M. StankovicZixiang Xiong
    • Qian XuVladimir M. StankovicZixiang Xiong
    • H04N7/12
    • H03M7/30H03M13/1197H03M13/6312
    • A system and method for video coding. Energy-concentrating transform operations are performed on video data to obtain transformed data. Nested scalar quantization is performed on the transformed data to generate blocks of coset indices. Bit planes of the blocks of coset indices are encoded using irregular repeat accumulate (IRA) encoders to generate corresponding bit streams. The bit streams are transmitted to a destination device over a channel. A decoder of the destination device receives input data, corresponding to transmitted bit streams, from the channel. The input data is decoded, using side information, to obtain estimates for the blocks of coset indices. Output video data (i.e., an estimate of the original video data) is generated using the estimated blocks of coset indices and the side information.
    • 一种用于视频编码的系统和方法。 对视频数据执行能量集中变换操作以获得变换数据。 对变换后的数据执行嵌套标量量化,生成集合索引块。 使用不规则重复累积(IRA)编码器对陪集索引块的位平面进行编码,以生成相应的比特流。 比特流通过信道被发送到目的地设备。 目的地设备的解码器从信道接收对应于发送的比特流的输入数据。 使用边信息对输入数据进行解码,以获得对陪集索引块的估计。 使用估计的陪集索引块和侧面信息来生成输出视频数据(即,原始视频数据的估计)。