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    • 98. 发明申请
    • METHOD AND SYSTEM FOR EFFICIENT VIDEO COMPRESSION WITH LOW-COMPLEXITY ENCODER
    • 低复杂度编码器高效视频压缩的方法与系统
    • US20090122868A1
    • 2009-05-14
    • US11939882
    • 2007-11-14
    • Jun ChenDake HeAshish JagmohanLigang LuVadim Sheinin
    • Jun ChenDake HeAshish JagmohanLigang LuVadim Sheinin
    • H04N7/26
    • H04N19/149H03M7/30H04N19/395H04N19/46H04N19/61
    • Disclosed are a method and system for video compression, wherein the video encoder has low computational complexity and high compression efficiency. The disclosed system comprises a video encoder and a video decoder, wherein the method for encoding includes the steps of converting a source frame into a space-frequency representation; estimating conditional statistics of at least one vector of space-frequency coefficients; estimating encoding rates based on the said conditional statistics; and applying Slepian-Wolf codes with the said computed encoding rates. The preferred method for decoding includes the steps of; generating a side-information vector of frequency coefficients based on previously decoded source data, encoder statistics, and previous reconstructions of the source frequency vector; and performing Slepian-Wolf decoding of at least one source frequency vector based on the generated side-information, the Slepian-Wolf code bits and the encoder statistics.
    • 公开了一种用于视频压缩的方法和系统,其中视频编码器具有低计算复杂度和高压缩效率。 所公开的系统包括视频编码器和视频解码器,其中用于编码的方法包括以下步骤:将源帧转换成空间频率表示; 估计至少一个空 - 频系数矢量的条件统计; 基于所述条件统计估计编码率; 以及使用所述计算的编码速率的Slepian-Wolf码。 优选的解码方法包括以下步骤: 基于先前解码的源数据,编码器统计量和源频率向量的先前重建来生成频率系数的侧信息向量; 并且基于所生成的侧信息,Slepian-Wolf码比特和编码器统计,对至少一个源频率向量执行Slepian-Wolf解码。