公开(公告)号：US09781423B2

公开(公告)日：2017-10-03

申请号：US15212855

申请日：2016-07-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Vadim Seregin ,  Jianle Chen

IPC: H04N7/12 ,  H04N19/129 ,  H04N19/60 ,  H04N19/96 ,  H04N19/136 ,  H04N19/18 ,  H04N19/186 ,  H04N19/625

CPC classification number: H04N19/129 ,  H04N19/136 ,  H04N19/18 ,  H04N19/186 ,  H04N19/60 ,  H04N19/625 ,  H04N19/96

Abstract: 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.

公开(公告)号：US09621918B2

公开(公告)日：2017-04-11

申请号：US14354722

申请日：2012-10-29

Applicant: Samsung Electronics Co., Ltd.

Inventor： Tammy Lee ,  Jianle Chen

IPC: H04N19/593 ,  H04N19/105 ,  H04N19/176 ,  H04N19/11 ,  H04N19/136 ,  H04N19/182

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/11 ,  H04N19/136 ,  H04N19/176 ,  H04N19/182 ,  H04N19/593

Abstract: A method and apparatus for intra predicting a video. The method includes: determining availability of a predetermined number of adjacent pixels used for intra prediction of a current block; if a first adjacent pixel is unavailable, searching for a second adjacent pixel that is available by searching the predetermined number of adjacent pixels in a predetermined direction based on the first adjacent pixel; and replacing a pixel value of the first adjacent pixel with a pixel value of a found second adjacent pixel. At least one third adjacent pixel in another location, which is not available and excludes the first adjacent pixel at a predetermined location, is sequentially replaced by using a directly adjacent pixel in a predetermined direction.

公开(公告)号：US09538187B2

公开(公告)日：2017-01-03

申请号：US14630144

申请日：2015-02-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena Alshina ,  Jianle Chen ,  Woo-jin Han

IPC: 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 classification number: 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

Abstract: 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.

Abstract translation: 提供了一种用于对视频进行编码和解码的方法和装置。 编码视频的方法包括：基于要编码的当前预测单元的大小来确定是否要使用单向运动估计模式和双向运动估计模式，对当前预测执行运动估计和运动补偿 根据确定是否使用单向运动估计模式和双向运动估计模式来确定当前预测单元的最佳运动估计模式;基于通过执行所述单向运动估计模式获得的当前预测单元的编码成本， 运动估计和运动补偿，以及基于当前预测单元的大小编码指示所确定的最佳运动估计模式的信息。

公开(公告)号：US20140334542A1

公开(公告)日：2014-11-13

申请号：US14354722

申请日：2012-10-29

Applicant: Samsung Electronics Co., Ltd.

Inventor： Tammy Lee ,  Jianle Chen

IPC: H04N19/593

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/11 ,  H04N19/136 ,  H04N19/176 ,  H04N19/182 ,  H04N19/593

Abstract: A method and apparatus for intra predicting a video. The method includes: determining availability of a predetermined number of adjacent pixels used for intra prediction of a current block; if a first adjacent pixel is unavailable, searching for a second adjacent pixel that is available by searching the predetermined number of adjacent pixels in a predetermined direction based on the first adjacent pixel; and replacing a pixel value of the first adjacent pixel with a pixel value of a found second adjacent pixel. At least one third adjacent pixel in another location, which is not available and excludes the first adjacent pixel at a predetermined location, is sequentially replaced by using a directly adjacent pixel in a predetermined direction.

Abstract translation: 一种用于帧内预测视频的方法和装置。 该方法包括：确定用于当前块的帧内预测的预定数量的相邻像素的可用性; 如果第一相邻像素不可用，则基于第一相邻像素，通过在预定方向上搜索预定数量的相邻像素来搜索可用的第二相邻像素; 以及用所找到的第二相邻像素的像素值替换第一相邻像素的像素值。 在另一位置的至少一个第三相邻像素，其不可用并且排除在预定位置处的第一相邻像素，通过在预定方向上使用直接相邻的像素来顺序地替换。

公开(公告)号：US11509899B2

公开(公告)日：2022-11-22

申请号：US17314475

申请日：2021-05-07

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Vadim Seregin ,  Jianle Chen ,  Sun-il Lee ,  Tammy Lee

IPC: H04N19/13 ,  H04N19/46 ,  H04N19/593 ,  H04N19/463 ,  H04N19/186 ,  H04N19/119 ,  H04N19/11 ,  H04N19/154

Abstract: Methods and apparatuses for encoding and decoding an intra prediction mode of a prediction unit of a chrominance component based on an intra prediction mode of a prediction unit of a luminance component are provided. When an intra prediction mode of a prediction unit of a luminance component is the same as an intra prediction mode in an intra prediction mode candidate group of a prediction unit of a chrominance component, reconstructing the intra prediction mode candidate group of the prediction unit of the chrominance component by excluding or replacing an intra prediction mode of the prediction unit of the chrominance component which is same as an intra prediction mode of the prediction unit of the luminance component from the intra prediction mode candidate group, and encoding the intra prediction mode of the prediction unit of the chrominance component by using the reconstructed intra prediction mode candidate group.

公开(公告)号：US09924174B2

公开(公告)日：2018-03-20

申请号：US14604286

申请日：2015-01-23

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jianle Chen ,  Jae-chool Lee ,  Sang-rae Lee ,  Min-su Cheon ,  Kyo-hyuk Lee

IPC: H04N19/172 ,  H04N19/91 ,  H04N19/13 ,  H04N19/184 ,  H04N19/70 ,  H04N19/129 ,  H04N19/174

CPC classification number: H04N19/172 ,  H04N19/129 ,  H04N19/13 ,  H04N19/174 ,  H04N19/184 ,  H04N19/70 ,  H04N19/91

Abstract: An image encoding method is provided, in which image data divided into basic blocks is classified in units of groups and subgroups, wherein each group comprises at least one basic block and each subgroup comprises at least one basic block and is included in each group; an encoding mode for a predetermined group is determined in order to encode the predetermined group, wherein the encoding mode represents a mode for encoding data included in the predetermined group in units of one data processing unit selected from a group, a subgroup, and a basic block; and the data of the predetermined group is encoded according to the determined encoding mode. Detailed operations in the image encoding method are performed in consideration of the encoding mode of the group.

公开(公告)号：US09788006B2

公开(公告)日：2017-10-10

申请号：US14724050

申请日：2015-05-28

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Tammy Lee ,  Jianle Chen

IPC: H04N19/51 ,  H04N19/91 ,  H04N19/13 ,  H04N19/61 ,  H04N19/52 ,  H04N19/593 ,  H04N19/82 ,  H04N19/96

CPC classification number: H04N19/52 ,  H04N19/13 ,  H04N19/51 ,  H04N19/593 ,  H04N19/61 ,  H04N19/82 ,  H04N19/91 ,  H04N19/96

Abstract: Provided are a method and apparatus for intra predicting an image, which generate a prediction value via linear interpolation in horizontal and vertical directions of a current prediction unit. The method includes: generating first and second virtual pixels by using at least one adjacent pixel located upper right and lower left to a current prediction unit; obtaining a first prediction value of a current pixel via linear interpolation using an adjacent left pixel located on the same line as the first virtual pixel and the current pixel; obtaining a second prediction value of the current pixel via linear interpolation using an adjacent upper pixel located on the same column as the second virtual pixel and the current pixel; and obtaining a prediction value of the current pixel by using the first and second prediction values.

公开(公告)号：US09591310B2

公开(公告)日：2017-03-07

申请号：US14665666

申请日：2015-03-23

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Tammy Lee ,  Jianle Chen

IPC: H04N19/91 ,  H04N19/13 ,  H04N19/119 ,  H04N19/136 ,  H04N19/176 ,  H04N19/96 ,  H04N19/157 ,  H04N19/426 ,  H04N19/60 ,  H04N19/18 ,  H04N19/12 ,  H04N19/186 ,  H04N19/61

CPC classification number: H04N19/13 ,  H04N19/119 ,  H04N19/12 ,  H04N19/136 ,  H04N19/157 ,  H04N19/176 ,  H04N19/18 ,  H04N19/184 ,  H04N19/186 ,  H04N19/30 ,  H04N19/426 ,  H04N19/46 ,  H04N19/60 ,  H04N19/61 ,  H04N19/70 ,  H04N19/91 ,  H04N19/96

Abstract: Provided are video encoding and decoding methods and apparatuses. The video encoding method includes: encoding a video based on data units having a hierarchical structure; determining a context model used for entropy encoding a syntax element of a data unit based on at least one piece of additional information of the data units; and entropy encoding the syntax element by using the determined context model.

公开(公告)号：US09578332B2

公开(公告)日：2017-02-21

申请号：US14630195

申请日：2015-02-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena Alshina ,  Jianle Chen ,  Woo-jin Han

IPC: 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 classification number: 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

Abstract: 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：US09544600B2

公开(公告)日：2017-01-10

申请号：US14627846

申请日：2015-02-20

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena Alshina ,  Jianle Chen ,  Woo-jin Han

IPC: 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 classification number: 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

Abstract: 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.