公开(公告)号：US08315304B2

公开(公告)日：2012-11-20

申请号：US12397768

申请日：2009-03-04

申请人： Bae-keun Lee ,  Jianle Chen

发明人： Bae-keun Lee ,  Jianle Chen

IPC分类号： H04N7/12 ,  H04B1/66

CPC分类号： H04N19/86 ,  H04N19/107 ,  H04N19/13 ,  H04N19/136 ,  H04N19/146 ,  H04N19/176 ,  H04N19/18 ,  H04N19/82

摘要： A method of encoding transform coefficients and a transform coefficient encoding apparatus, and a method of decoding transform coefficients and a transform coefficient decoding apparatus are provided. The method of encoding the transform coefficients includes reading transform coefficients in a current block, determining whether a first transform coefficient having an absolute value greater than a predetermined threshold value exists in the transform coefficients in the current block, generating first flag information indicating whether the first transform coefficient exists, dividing the first transform coefficient from information of a second transform coefficient that is remaining transform coefficients excluding the first transform coefficient, and encoding the first transform coefficients and the second transform coefficients separately, thereby more efficiently using a correlation between each of the transform coefficients.

摘要翻译： 提供编码变换系数的方法和变换系数编码装置，以及解码变换系数的方法和变换系数解码装置。 编码变换系数的方法包括读取当前块中的变换系数，确定在当前块中的变换系数中是否存在绝对值大于预定阈值的第一变换系数，生成表示第一 存在变换系数，将第一变换系数与除第一变换系数之外的剩余变换系数的第二变换系数的信息相分离，并且分别对第一变换系数和第二变换系数进行编码，从而更有效地使用 变换系数。

公开(公告)号：US20090232204A1

公开(公告)日：2009-09-17

申请号：US12397768

申请日：2009-03-04

申请人： Bae-keun Lee ,  Jianle Chen

发明人： Bae-keun Lee ,  Jianle Chen

IPC分类号： H04N7/12

CPC分类号： H04N19/86 ,  H04N19/107 ,  H04N19/13 ,  H04N19/136 ,  H04N19/146 ,  H04N19/176 ,  H04N19/18 ,  H04N19/82

摘要： A method of encoding transform coefficients and a transform coefficient encoding apparatus, and a method of decoding transform coefficients and a transform coefficient decoding apparatus are provided. The method of encoding the transform coefficients includes reading transform coefficients in a current block, determining whether a first transform coefficient having an absolute value greater than a predetermined threshold value exists in the transform coefficients in the current block, generating first flag information indicating whether the first transform coefficient exists, dividing the first transform coefficient from information of a second transform coefficient that is remaining transform coefficients excluding the first transform coefficient, and encoding the first transform coefficients and the second transform coefficients separately, thereby more efficiently using a correlation between each of the transform coefficients.

摘要翻译： 提供编码变换系数的方法和变换系数编码装置，以及解码变换系数的方法和变换系数解码装置。 编码变换系数的方法包括读取当前块中的变换系数，确定在当前块中的变换系数中是否存在绝对值大于预定阈值的第一变换系数，生成表示第一 存在变换系数，将第一变换系数与除第一变换系数之外的剩余变换系数的第二变换系数的信息相分离，并且分别对第一变换系数和第二变换系数进行编码，从而更有效地使用 变换系数。

公开(公告)号：US09674521B2

公开(公告)日：2017-06-06

申请号：US14130098

申请日：2012-06-28

申请人： Tammy Lee ,  Jianle Chen ,  Vadim Seregin

发明人： Tammy Lee ,  Jianle Chen ,  Vadim Seregin

IPC分类号： H04N19/186 ,  H04N19/117 ,  H04N19/182 ,  H04N19/50 ,  H04N19/59 ,  H04N19/593

CPC分类号： H04N19/186 ,  H04N19/117 ,  H04N19/182 ,  H04N19/59 ,  H04N19/593

摘要： Provided are a method and an apparatus for predicting a chrominance signal from a luminance signal by using a correlation between the luminance and chrominance signals. A method of predicting a chrominance component image generates a down-sampled luminance signal matching a chrominance signal by independently applying various down-sampling methods according to a location of a luminance signal, and predicts a chrominance signal from the down-sampled luminance signal, while considering a size of a luminance prediction unit and a size of a chrominance prediction unit corresponding to each other according to a color format.

公开(公告)号：US08842927B2

公开(公告)日：2014-09-23

申请号：US13006652

申请日：2011-01-14

申请人： Min-su Cheon ,  Woo-jin Han ,  Hae-kyung Jung ,  Il-koo Kim ,  Tammy Lee ,  Jianle Chen

发明人： Min-su Cheon ,  Woo-jin Han ,  Hae-kyung Jung ,  Il-koo Kim ,  Tammy Lee ,  Jianle Chen

IPC分类号： G06K9/36 ,  H04N19/176 ,  H04N19/122 ,  H04N19/96 ,  H04N19/119 ,  H04N19/61 ,  H04N19/147

CPC分类号： H04N19/122 ,  G06T9/00 ,  H04N19/107 ,  H04N19/119 ,  H04N19/124 ,  H04N19/13 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/30 ,  H04N19/50 ,  H04N19/503 ,  H04N19/60 ,  H04N19/61 ,  H04N19/91 ,  H04N19/96

摘要： A method of encoding an image by transforming a group of prediction units into a frequency domain. A prediction unit may be predicted by using prediction values of the prediction units in the group of prediction units, instead of pixels generated by encoding and then restoring the other prediction units in the group of prediction units. Thus, an encoding compression ratio may be increased as a result of grouping the prediction units.

摘要翻译： 一种通过将一组预测单元变换成频域来对图像进行编码的方法。 可以通过使用预测单元组中的预测单元的预测值来代替通过编码生成的像素，然后恢复预测单元组中的其他预测单元来预测预测单元。 因此，作为对预测单元进行分组的结果，可以增加编码压缩比。

公开(公告)号：US08472521B2

公开(公告)日：2013-06-25

申请号：US13593941

申请日：2012-08-24

申请人： Jianle Chen ,  Min-su Cheon ,  Jae-chool Lee ,  Jung-hye Min ,  Hae-kyung Jung ,  Il-koo Kim ,  Sang-rae Lee ,  Kyo-hyuk Lee

发明人： Jianle Chen ,  Min-su Cheon ,  Jae-chool Lee ,  Jung-hye Min ,  Hae-kyung Jung ,  Il-koo Kim ,  Sang-rae Lee ,  Kyo-hyuk Lee

IPC分类号： H04N7/18 ,  H04N7/26

CPC分类号： H04N19/50 ,  H04N19/103 ,  H04N19/105 ,  H04N19/119 ,  H04N19/122 ,  H04N19/132 ,  H04N19/147 ,  H04N19/176 ,  H04N19/19 ,  H04N19/30 ,  H04N19/44 ,  H04N19/46 ,  H04N19/593 ,  H04N19/61 ,  H04N19/96 ,  Y02T10/84

摘要： Disclosed is a method of encoding a video, the method including: splitting a current picture into at least one maximum coding unit; determining a coded depth to output a final encoding result according to at least one split region obtained by splitting a region of the maximum coding unit according to depths, by encoding the at least one split region, based on a depth that deepens in proportion to the number of times the region of the maximum coding unit is split; and outputting image data constituting the final encoding result according to the at least one split region, and encoding information about the coded depth and a prediction mode, according to the at least one maximum coding unit.

公开(公告)号：US09538184B2

公开(公告)日：2017-01-03

申请号：US14345098

申请日：2012-09-14

申请人： Elena Alshina ,  Jianle Chen ,  Woo-jin Han

发明人： Elena Alshina ,  Jianle Chen ,  Woo-jin Han

IPC分类号： H04N19/105 ,  H04N19/176 ,  H04N19/61 ,  H04N19/107 ,  H04N19/109 ,  H04N19/136 ,  H04N19/146 ,  H04N19/182 ,  H04N19/19 ,  H04N19/503 ,  H04N19/513 ,  H04N19/57

CPC分类号： H04N19/105 ,  H04N19/107 ,  H04N19/109 ,  H04N19/136 ,  H04N19/146 ,  H04N19/176 ,  H04N19/182 ,  H04N19/19 ,  H04N19/503 ,  H04N19/513 ,  H04N19/523 ,  H04N19/57 ,  H04N19/61

摘要： A method and apparatus for encoding and decoding a video are provided. The method of encoding the video includes: determining whether a unidirectional motion estimation mode and a bidirectional motion estimation mode are to be used based on a size of a current prediction unit to be encoded, performing the motion estimation and the motion compensation on the current prediction unit according to the determining of whether the unidirectional motion estimation mode and the bidirectional motion estimation mode are to be used, determining an optimum motion estimation mode of the current prediction unit based on an encoding cost of the current prediction unit obtained through the performing of the motion estimation and the motion compensation, and encoding information indicating the determined optimum motion estimation mode based on the size of the current prediction unit.

公开(公告)号：US09414056B2

公开(公告)日：2016-08-09

申请号：US13979795

申请日：2012-01-13

申请人： Vadim Seregin ,  Jianle Chen

发明人： Vadim Seregin ,  Jianle Chen

IPC分类号： H04N7/12 ,  H04N19/129 ,  H04N19/60 ,  H04N19/96

CPC分类号： H04N19/129 ,  H04N19/136 ,  H04N19/18 ,  H04N19/186 ,  H04N19/60 ,  H04N19/625 ,  H04N19/96

摘要： Provided are encoding and decoding methods and apparatuses for a video by selectively determining and using a scan mode. The video encoding method includes: generating transformation coefficients by performing transformation based on a transformation unit to encode an image; determining a scan mode, from among a plurality of scan modes, indicating a scanning direction of the generated transformation coefficients, based on characteristics of the transformation coefficients; and determining and outputting an encoding order of the generated transformation coefficients based on the scanning direction of the determined scan mode.

摘要翻译： 提供了通过选择性地确定和使用扫描模式的用于视频的编码和解码方法和装置。 视频编码方法包括：通过基于变换单元执行变换来编码图像来生成变换系数; 根据所述变换系数的特性，从多个扫描模式中确定表示所生成的变换系数的扫描方向的扫描模式; 以及基于所确定的扫描模式的扫描方向确定并输出所生成的变换系数的编码顺序。

公开(公告)号：US08792741B2

公开(公告)日：2014-07-29

申请号：US12855884

申请日：2010-08-13

申请人： Tammy Lee ,  Woo-jin Han ,  Jianle Chen ,  Hae-kyung Jung

发明人： Tammy Lee ,  Woo-jin Han ,  Jianle Chen ,  Hae-kyung Jung

IPC分类号： G06K9/36 ,  H04N7/50 ,  H04N7/26

CPC分类号： H04N19/625 ,  G06T9/00 ,  H04N19/107 ,  H04N19/119 ,  H04N19/122 ,  H04N19/169 ,  H04N19/176 ,  H04N19/61 ,  H04N19/70 ,  H04N19/96

摘要： Disclosed are an image encoding method and apparatus for encoding an image by grouping a plurality of adjacent prediction units into a transformation unit and transforming the plurality of adjacent prediction into a frequency domain, and an image decoding method and apparatus for decoding an image encoded by using the image encoding method and apparatus.

公开(公告)号：US20140072240A1

公开(公告)日：2014-03-13

申请号：US14001618

申请日：2012-02-24

申请人： Tammy Lee ,  Il-koo Kim ,  Woo-jin Han ,  Jianle Chen

发明人： Tammy Lee ,  Il-koo Kim ,  Woo-jin Han ,  Jianle Chen

IPC分类号： G06T9/00

CPC分类号： G06T9/007 ,  G06F17/147 ,  H04N19/61 ,  H04N19/619 ,  H04N19/625

摘要： An image transformation method substitutes element based on a trigonometric function included in a discrete cosine transform (DCT) matrix with a rational number, performs upscaling and transformation process on an input signal using the substituted DCT matrix based on a maximum value of a denominator of an intermediate value generated in the transformation process, and performs downscaling on the transformed signal.

摘要翻译： 图像变换方法基于包含在具有有理数的离散余弦变换（DCT）矩阵中的三角函数来代替元素，使用基于替代DCT矩阵的分母的最大值对输入信号执行上变换和变换处理 在变换处理中生成的中间值，对变换后的信号进行缩小。

公开(公告)号：US08204320B2

公开(公告)日：2012-06-19

申请号：US13348134

申请日：2012-01-11

申请人： Tammy Lee ,  Woo-jin Han ,  Jianle Chen ,  Hae-kyung Jung

发明人： Tammy Lee ,  Woo-jin Han ,  Jianle Chen ,  Hae-kyung Jung

IPC分类号： G06K9/36 ,  H04N7/12

CPC分类号： H04N19/625 ,  G06T9/00 ,  H04N19/107 ,  H04N19/119 ,  H04N19/122 ,  H04N19/169 ,  H04N19/176 ,  H04N19/61 ,  H04N19/70 ,  H04N19/96

摘要： Disclosed are an image encoding method and apparatus for encoding an image by grouping a plurality of adjacent prediction units into a transformation unit and transforming the plurality of adjacent prediction into a frequency domain, and an image decoding method and apparatus for decoding an image encoded by using the image encoding method and apparatus.