公开(公告)号：US20140010312A1

公开(公告)日：2014-01-09

申请号：US14021782

申请日：2013-09-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jin Song ,  Mingyuan Yang ,  Dong Wang

IPC: H04N7/30

CPC classification number: H04N19/645 ,  H04N19/117 ,  H04N19/129 ,  H04N19/132 ,  H04N19/60 ,  H04N19/61 ,  H04N19/86 ,  H04N19/91

Abstract: An encoding method includes: encoding transform coefficients of a transform coefficient block according to a predetermined scan order, and encoding a set number of transform coefficients in each group until a last group of the transform coefficient block is encoded; storing an obtained map of non-zero transform coefficients, absolute values of transform coefficients, and positive and negative signs of non-zero transform coefficients; when the last group is being encoded, encoding the stored map of non-zero transform coefficients and the map of non-zero transform coefficients encoded in the last group into a bit stream; and encoding the stored absolute values of transform coefficients and positive and negative signs of non-zero transform coefficients and the absolute values of transform coefficients and positive and negative signs of non-zero transform coefficients encoded in the last group into the bit stream.

Abstract translation: 编码方法包括：根据预定的扫描顺序对变换系数块的变换系数进行编码，并对每组中的设定数目的变换系数进行编码，直到编码最后一组变换系数块; 存储获得的非零变换系数的图，变换系数的绝对值，以及非零变换系数的正和负符号; 当最后一组被编码时，将存储的非零变换系数的映射和在最后组中编码的非零变换系数的映射编码为比特流; 并将所存储的变换系数的绝对值和非零变换系数的正和负符号以及最后一组中编码的非零变换系数的变换系数和正负号的绝对值编码为比特流。

公开(公告)号：US20130129242A1

公开(公告)日：2013-05-23

申请号：US13738773

申请日：2013-01-10

Applicant: Huawei Technologies Co. Ltd.

Inventor： Sixin Lin ,  Mingyuan Yang ,  Haoping Yu ,  Jiantong Zhou ,  Cunbin Pan

IPC: H04N7/32 ,  G06T9/00 ,  G06K9/36

CPC classification number: H04N19/109 ,  G06T9/004 ,  H04N19/117 ,  H04N19/149 ,  H04N19/523 ,  H04N19/53 ,  H04N19/56 ,  H04N19/577

Abstract: A method and device for generating a predicted value of image that are mostly used to generate a predicted value of a current block during image encoding or decoding. The method includes: determining a searching scope, wherein multiple motion vectors are included in the searching scope; performing up-sampling interpolations on first reference blocks, corresponding to the motion vector in the searching scope, in a reference image of the current block by using a first filter to obtain up-sampled first reference blocks; by using the up-sampled first reference blocks, obtaining at least one candidate motion vector corresponding to the current block; performing up-sampling interpolations on second reference blocks, corresponding to the at least one candidate motion vector, in the reference image of the current block by using a second filter to obtain up-sampled second reference blocks; combining the up-sampled second reference blocks to obtain a predicted value of the current block.

Abstract translation: 一种用于在图像编码或解码期间生成主要用于生成当前块的预测值的图像的预测值的方法和装置。 该方法包括：确定搜索范围，其中多个运动矢量包括在搜索范围内; 通过使用第一滤波器来获取上采样的第一参考块，在当前块的参考图像中对与搜索范围中的运动矢量相对应的第一参考块执行向上采样内插; 通过使用上采样的第一参考块，获得与当前块相对应的至少一个候选运动矢量; 通过使用第二滤波器来获取上采样的第二参考块，在当前块的参考图像中对应于至少一个候选运动矢量的第二参考块上执行上取样内插; 组合上采样的第二参考块以获得当前块的预测值。