公开(公告)号：US20140177708A1

公开(公告)日：2014-06-26

申请号：US14130028

申请日：2012-06-28

申请人： Alexander Alshin ,  Elena Alshina

发明人： Alexander Alshin ,  Elena Alshina

IPC分类号： H04N19/50

CPC分类号： H04N19/50 ,  H03M7/4006 ,  H04N19/13 ,  H04N19/91 ,  H04N19/96

摘要： Provided are methods and apparatuses for entropy-encoding and entropy-decoding an image. The method for entropy-encoding an image includes operations of arithmetically encoding a binary value of a current coding symbol, by using a probability of a predefined binary value which is determined based on previously-coded symbols that are encoded before the current coding symbol; and updating the probability of the predefined binary value by using a plurality of scaling factors, according to the binary value of the current coding symbol.

摘要翻译： 提供了用于对图像进行熵编码和熵解码的方法和装置。 用于熵编码图像的方法包括通过使用基于在当前编码符号之前编码的先前编码的符号确定的预定二进制值的概率来对当前编码符号的二进制值进行算术编码的操作; 以及根据当前编码符号的二进制值，通过使用多个缩放因子来更新预定二进制值的概率。

公开(公告)号：US08139879B2

公开(公告)日：2012-03-20

申请号：US12173069

申请日：2008-07-15

申请人： Vadim Seregin ,  Alexander Alshin ,  Maxim Koroteev ,  Elena Alshina ,  Ekaterina Nesterova

发明人： Vadim Seregin ,  Alexander Alshin ,  Maxim Koroteev ,  Elena Alshina ,  Ekaterina Nesterova

IPC分类号： G06K9/46

CPC分类号： H04N19/625 ,  H04N19/12 ,  H04N19/126 ,  H04N19/129 ,  H04N19/13 ,  H04N19/146 ,  H04N19/147 ,  H04N19/176 ,  H04N19/19 ,  H04N19/192 ,  H04N19/46 ,  H04N19/61

摘要： A method and apparatus for coding an image by using exponential Golomb binarization are provided. The method comprises: performing entropy coding on an input image by performing exponential Golomb binarization using a plurality of predetermined thresholds; measuring a bit rate of a bit stream which is generated by performing the entropy coding using each threshold; and determining an optimal threshold by comparing bit rates with regard to the thresholds.

摘要翻译： 提供了一种通过使用指数Golomb二值化对图像进行编码的方法和装置。 该方法包括：通过使用多个预定阈值执行指数Golomb二进制化来对输入图像执行熵编码; 测量通过使用每个阈值执行熵编码而生成的比特流的比特率; 以及通过将比特率相对于所述阈值进行比较来确定最佳阈值。

公开(公告)号：US08494296B2

公开(公告)日：2013-07-23

申请号：US12964114

申请日：2010-12-09

申请人： Elena Alshina ,  Alexander Alshin ,  Vadim Seregin

发明人： Elena Alshina ,  Alexander Alshin ,  Vadim Seregin

IPC分类号： G06K9/36 ,  G06K9/46

CPC分类号： H04N19/157 ,  H04N19/122 ,  H04N19/176 ,  H04N19/61

摘要： Disclosed are a method and apparatus for encoding and decoding an image. The image encoding method includes: generating a first frequency coefficient matrix by performing spatial transform (e.g. discrete cosine transform (DCT) on a current block; determining an angle parameter based on whether the current block is intra or inter predicted; generating a second frequency coefficient matrix by performing a partial switch between at least one of rows and columns of the first frequency coefficient matrix based on the determined angle parameter; and encoding the second frequency coefficient matrix and information about the angle parameter.

摘要翻译： 公开了一种用于对图像进行编码和解码的方法和装置。 图像编码方法包括：通过对当前块执行空间变换（例如离散余弦变换（DCT））来生成第一频率系数矩阵;基于当前块是在帧内还是帧间预测来确定角度参数;生成第二频率系数 基于所确定的角度参数，在所述第一频率系数矩阵的行和列中的至少一个之间执行部分切换;以及对所述第二频率系数矩阵和关于所述角度参数的信息进行编码。

公开(公告)号：US08467625B2

公开(公告)日：2013-06-18

申请号：US12914181

申请日：2010-10-28

申请人： Elena Alshina ,  Alexander Alshin ,  Vadim Seregin

发明人： Elena Alshina ,  Alexander Alshin ,  Vadim Seregin

IPC分类号： G06K9/36 ,  G06K9/46

CPC分类号： H04N19/625 ,  H04N19/119 ,  H04N19/122 ,  H04N19/14 ,  H04N19/176 ,  H04N19/18 ,  H04N19/61

摘要： An image encoding method includes generating a first frequency coefficient matrix by transforming a predetermined block to a frequency domain; determining whether the first frequency coefficient matrix includes coefficients whose absolute values are greater than a predetermined value; generating a second frequency coefficient matrix by selectively partially switching at least one of rows and columns of the first frequency coefficient matrix according to an angle parameter based on a determination result; and selectively encoding the second frequency coefficient matrix based on the determination result.

公开(公告)号：US08200035B2

公开(公告)日：2012-06-12

申请号：US12173366

申请日：2008-07-15

申请人： Maxim Koroteev ,  Alexander Alshin ,  Elena Alshina ,  Vadim Seregin ,  Ekaterina Nesterova

发明人： Maxim Koroteev ,  Alexander Alshin ,  Elena Alshina ,  Vadim Seregin ,  Ekaterina Nesterova

IPC分类号： G06K9/36 ,  G06K9/46 ,  G06K9/00

CPC分类号： H04N19/18 ,  H04N19/126 ,  H04N19/14 ,  H04N19/176 ,  H04N19/44 ,  H04N19/46

摘要： Provided are a method and apparatus for correcting quantized coefficients. In the method, statistical values of coefficients and quantized coefficients are extracted from a received video data stream, coefficient correction values for each pixel position in blocks are determined by using the statistical distribution of the coefficients depending on the statistical values, and then the coefficients are corrected by respectively adding the coefficient correction values to corresponding coefficients of respective pixel positions.

摘要翻译： 提供了一种用于校正量化系数的方法和装置。 在该方法中，从接收到的视频数据流中提取系数和量化系数的统计值，根据统计值，使用系数的统计分布来确定块中每个像素位置的系数校正值，然后系数为 通过将系数校正值分别加到相应像素位置的相应系数来校正。

公开(公告)号：US20100054619A1

公开(公告)日：2010-03-04

申请号：US12551750

申请日：2009-09-01

申请人： Alexander Alshin ,  Elena Alshina ,  Ekaterina Nesterova

发明人： Alexander Alshin ,  Elena Alshina ,  Ekaterina Nesterova

IPC分类号： G06K9/00

CPC分类号： H04N19/44 ,  H04N19/126 ,  H04N19/154

摘要： Provided are method and apparatus for inverse quantizing an image, the method including: determining a quantization step correction value for reducing a quantization error, which is a difference between an inverse quantization coefficient, obtained by inverse quantizing a quantization coefficient, and an original value of the transformation coefficient; and inverse quantizing the quantization coefficient using a second quantization step value, the second quantization step value being obtained by correcting a first quantization step value used for inverse quantizing the quantization coefficient using the determined quantization step correction value.

摘要翻译： 提供了一种用于对图像进行逆量化的方法和装置，所述方法包括：确定用于减小量化误差的量化步长校正值，所述量化误差是通过逆量化量化系数得到的逆量化系数与原始值 变换系数; 以及使用第二量化步长值对所述量化系数进行逆量化，所述第二量化步长值是通过使用所确定的量化步长校正值校正用于对所述量化系数进行逆量化的第一量化步长值而获得的。

公开(公告)号：US09661326B2

公开(公告)日：2017-05-23

申请号：US14130028

申请日：2012-06-28

申请人： Alexander Alshin ,  Elena Alshina

发明人： Alexander Alshin ,  Elena Alshina

IPC分类号： H04N7/12 ,  H04N19/50 ,  H04N19/91 ,  H04N19/96 ,  H03M7/40 ,  H04N19/13

CPC分类号： H04N19/50 ,  H03M7/4006 ,  H04N19/13 ,  H04N19/91 ,  H04N19/96

摘要： Provided are methods and apparatuses for entropy-encoding and entropy-decoding an image. The method for entropy-encoding an image includes operations of arithmetically encoding a binary value of a current coding symbol, by using a probability of a predefined binary value which is determined based on previously-coded symbols that are encoded before the current coding symbol; and updating the probability of the predefined binary value by using a plurality of scaling factors, according to the binary value of the current coding symbol.

公开(公告)号：US09426482B2

公开(公告)日：2016-08-23

申请号：US14130011

申请日：2012-06-27

申请人： Elena Alshina ,  Alexander Alshin

发明人： Elena Alshina ,  Alexander Alshin

IPC分类号： H04N19/14 ,  H04N19/44 ,  H04N19/50 ,  H04N19/117 ,  H04N19/186 ,  H04N19/182 ,  H04N19/85 ,  H04N19/463 ,  H04N19/176 ,  H04N19/137 ,  H04N19/89 ,  H04N19/90 ,  G06T5/00 ,  H04N19/189 ,  H04N19/625

CPC分类号： H04N19/463 ,  G06T5/001 ,  H04N19/117 ,  H04N19/137 ,  H04N19/14 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/189 ,  H04N19/44 ,  H04N19/50 ,  H04N19/625 ,  H04N19/85 ,  H04N19/89 ,  H04N19/90

摘要： A video encoding method and apparatus and video decoding method and apparatus generate a restored image having a minimum error with respect to an original image based on offset merge information indicating whether offset parameters of a current block and at least one neighboring block from among blocks of video are identical.

摘要翻译： 视频编码方法和装置以及视频解码方法和装置基于偏移合并信息生成相对于原始图像具有最小误差的恢复图像，该偏移合并信息指示视频块中的当前块和至少一个相邻块的偏移参数 是相同的

公开(公告)号：US09282339B2

公开(公告)日：2016-03-08

申请号：US14130157

申请日：2012-06-28

申请人： Elena Alshina ,  Alexander Alshin

发明人： Elena Alshina ,  Alexander Alshin

IPC分类号： H04N19/00 ,  H04N19/523 ,  G06T3/40 ,  H04N19/61 ,  H04N19/117 ,  H04N19/182 ,  H04N19/167 ,  H04N19/59 ,  H04N19/537 ,  H04N19/52 ,  H04N19/82

CPC分类号： H04N19/523 ,  G06T3/4007 ,  H04N19/117 ,  H04N19/167 ,  H04N19/182 ,  H04N19/52 ,  H04N19/537 ,  H04N19/59 ,  H04N19/61 ,  H04N19/82

摘要： A sub-pel-unit image interpolation method using a transformation-based interpolation filter includes, selecting, based on a sub-pel-unit interpolation location in a region supported by a plurality of interpolation filters for generating at least one sub-pel-unit pixel value located between integer-pel-unit pixels, one of a symmetric interpolation filter and an asymmetric interpolation filter from among the plurality of interpolation filters; and using the selected interpolation filter to generate the at least one sub-pel-unit pixel value by interpolating the integer-pel-unit pixels.

公开(公告)号：US20140133551A1

公开(公告)日：2014-05-15

申请号：US14130157

申请日：2012-06-28

申请人： Elena Alshina ,  Alexander Alshin

发明人： Elena Alshina ,  Alexander Alshin

IPC分类号： G06T3/40 ,  H04N19/91 ,  H04N19/61

CPC分类号： H04N19/523 ,  G06T3/4007 ,  H04N19/117 ,  H04N19/167 ,  H04N19/182 ,  H04N19/52 ,  H04N19/537 ,  H04N19/59 ,  H04N19/61 ,  H04N19/82

摘要： A sub-pel-unit image interpolation method using a transformation-based interpolation filter includes, selecting, based on a sub-pel-unit interpolation location in a region supported by a plurality of interpolation filters for generating at least one sub-pel-unit pixel value located between integer-pel-unit pixels, one of a symmetric interpolation filter and an asymmetric interpolation filter from among the plurality of interpolation filters; and using the selected interpolation filter to generate the at least one sub-pel-unit pixel value by interpolating the integer-pel-unit pixels.

摘要翻译： 使用基于变换的内插滤波器的子像素单位图像插值方法包括：基于由多个内插滤波器支持的区域中的子像素单位内插位置来选择，用于生成至少一个子像素单元 位于整数像素单位像素之间的像素值，来自多个内插滤波器的对称内插滤波器和非对称内插滤波器之一; 以及使用所选择的内插滤波器通过内插所述整数像素单位像素来生成所述至少一个子像素单位像素值。