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    • 81. 发明申请
    • Method for Coding Videos Using Dictionaries
    • 使用字典编码视频的方法
    • US20120163451A1
    • 2012-06-28
    • US12979414
    • 2010-12-28
    • Robert A. CohenJewon KangAnthony Vetro
    • Robert A. CohenJewon KangAnthony Vetro
    • H04N7/32
    • H04N19/97H04N19/102H04N19/105H04N19/122H04N19/147H04N19/157H04N19/176H04N19/46
    • A video encoded as a bit stream is decoded by maintaining a set of dictionaries generated from decoded prediction residual signals, wherein elements of the set of dictionaries have associated indices. A current macroblock is entropy decoded and inverse quantized to produce decoded coefficients. For the current macroblock, a particular dictionary of the set of dictionaries is selected according to a prediction mode signaled in the bit stream, and particular elements of the particular dictionary are selected according to a copy mode signal in the bit stream and the associated index. The particular elements is scaled and combined, using the decoded coefficients, to reconstruct a current decoded macroblock prediction residual signal. Then, the current decoded macroblock prediction residual signal is combined with previously decoded macroblocks to generate an output macroblock of a reconstructed video, wherein the steps are performed in a decoder.
    • 通过维持从解码的预测残差信号产生的一组字典来解码编码为比特流的视频,其中字典集合中的元素具有相关联的索引。 当前宏块被熵解码并被反量化以产生解码系数。 对于当前的宏块,根据在位流中发信号的预测模式来选择字典集合的特定字典,并且根据位流中的复制模式信号和相关联的索引来选择特定字典的特定元素。 使用解码的系数对特定元素进行缩放和组合,以重构当前解码的宏块预测残差信号。 然后,将当前解码的宏块预测残差信号与先前解码的宏块相组合以产生重构视频的输出宏块,其中在解码器中执行这些步骤。
    • 85. 发明申请
    • Method and Apparatus for Compressing SAR Signals
    • 压缩SAR信号的方法和装置
    • US20090267825A1
    • 2009-10-29
    • US12110834
    • 2008-04-28
    • Anthony VetroShan LiuJian LouStephen R. Burgess
    • Anthony VetroShan LiuJian LouStephen R. Burgess
    • G01S13/90
    • G01S13/90G01S7/003H03M7/30H03M7/4006
    • A method compresses synthetic aperture radar (SAR) data by sampling the SAR data into blocks and transforming each block to a corresponding block of transform coefficients. Each block of transform coefficient is quantized according to a quantization parameter to obtain a corresponding block of quantized transform coefficients, which are demultiplexed into sets of blocks of quantized transform coefficients. The quantized transform coefficients in the blocks in each set are arithmetically encoding in parallel according to a probability model to produce an intermediate bitstream for each set of blocks. The encoding of the quantized transform coefficients of one block is independent of the quantized transform coefficients of a successive block. The intermediate of bitstreams are then multiplexed to a compressed bitstream, which can be transmitted, or stored, for subsequent decoding to construct an SAR image.
    • 一种方法通过将SAR数据采样到块中并将每个块变换成相应的变换系数块来压缩合成孔径雷达(SAR)数据。 每个变换系数块根据量化参数进行量化,以获得量化变换系数的相应块,其被解复用为量化变换系数块集合。 每组中的块中的量化变换系数根据概率模型并行地进行算术编码,以产生每组块的中间比特流。 一个块的量化变换系数的编码与连续块的量化变换系数无关。 然后将比特流的中间复用到可以被传输或存储的压缩比特流,以便后续解码以构建SAR图像。