公开(公告)号：US20180139440A1

公开(公告)日：2018-05-17

申请号：US15869809

申请日：2018-01-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Il-koo KIM ,  Jung-hye MIN ,  Hae-kyung JUNG ,  Sun-il LEE ,  Min-su CHEON

IPC: H04N19/103 ,  H04N19/597 ,  H04N19/132 ,  H04N19/96 ,  H04N19/61 ,  H04N19/122 ,  H04N19/46 ,  H04N19/119 ,  H04N19/70 ,  H04N19/176 ,  H04N19/105 ,  H04N19/196 ,  H04N19/172

CPC classification number: H04N19/103 ,  H04N19/105 ,  H04N19/119 ,  H04N19/122 ,  H04N19/132 ,  H04N19/172 ,  H04N19/176 ,  H04N19/198 ,  H04N19/46 ,  H04N19/597 ,  H04N19/61 ,  H04N19/70 ,  H04N19/96

Abstract: A method of encoding a video includes: splitting a picture into a maximum coding unit; for the maximum coding unit, determining coding units having a tree structure including coding units of coded depths and determining encoding modes for the coding units of the coded depths by performing encoding based on coding units according to depths, the coding units according to depths obtained by hierarchically splitting the maximum coding unit as a depth deepens; and outputting information about a maximum coding unit size and, for the maximum coding unit, information indicating an order of split information and skip mode information which is selectively determined for the coding units according to depths, information about the encoding modes for the coding units of the coded depths including the split information and the skip mode information which are arranged according to the order, and encoded video data.

公开(公告)号：US20170195690A1

公开(公告)日：2017-07-06

申请号：US15463648

申请日：2017-03-20

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Min-su CHEON ,  Jung-hye MIN ,  Hae-kyung JUNG ,  Il-koo KIM

IPC: H04N19/61 ,  H04N19/18

CPC classification number: H04N19/61 ,  H04N19/119 ,  H04N19/129 ,  H04N19/147 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/44 ,  H04N19/46 ,  H04N19/60 ,  H04N19/70 ,  H04N19/96

Abstract: A video decoding apparatus including an extractor which extracts from a bitstream first pattern information indicating whether residual samples of a current coding unit are equal to 0, and when the first pattern information indicates the residual samples are not equal to 0, extracts from the bitstream transformation index information indicating whether a transformation unit of a current level included in the current coding unit is split, a decoder which splits the transformation unit of the current level into transformation units of a lower level when the transformation index information indicates a split of the transformation unit of the current level, wherein the extractor further extracts second pattern information for the transformation unit of the current level when the transformation index information indicates a non-split of the transformation unit of the current level, wherein the second pattern information indicates whether the transformation unit of the current level contains one or more transform coefficients not equal to 0, wherein the transformation unit of the current level is split into four transformation units of the lower level.

公开(公告)号：US20160241877A1

公开(公告)日：2016-08-18

申请号：US15140731

申请日：2016-04-28

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jung-hye MIN ,  Hae-kyung JUNG ,  Il-koo KIM ,  Min-su CHEON

IPC: H04N19/593 ,  H04N19/172 ,  H04N19/44 ,  H04N19/184

CPC classification number: H04N19/593 ,  H04N19/105 ,  H04N19/122 ,  H04N19/139 ,  H04N19/146 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/197 ,  H04N19/44 ,  H04N19/46 ,  H04N19/50 ,  H04N19/587 ,  H04N19/61 ,  H04N19/96

Abstract: A video decoding method and apparatus and a video encoding method and apparatus based on a scanning order of hierarchical data units are provided. The decoding method includes: receiving and parsing a bitstream of an encoded video; extracting from the bitstream information about a size of a maximum coding unit for decoding a picture of the encoded video, and encoding information about a coded depth and an encoding mode for coding units of the picture, wherein the size of the maximum coding unit is a maximum size of a coding unit which is a data unit for decoding the picture; and determining a hierarchical structure of the maximum coding unit and the coding units into which the picture is divided according to depths, and decoding the picture based on the coding units, by using the information about the size of the maximum coding unit and the encoding information about the coded depth and the encoded mode.

公开(公告)号：US20150256829A1

公开(公告)日：2015-09-10

申请号：US14719629

申请日：2015-05-22

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Min-su CHEON ,  Hae-kyung JUNG ,  Jung-hye MIN ,  Il-koo KIM

IPC: H04N19/122 ,  H04N19/184 ,  H04N19/136

CPC classification number: H04N19/44 ,  H04N19/119 ,  H04N19/122 ,  H04N19/136 ,  H04N19/147 ,  H04N19/176 ,  H04N19/184 ,  H04N19/60 ,  H04N19/61 ,  H04N19/70 ,  H04N19/96

Abstract: A method and apparatus for decoding video and a method and apparatus for encoding video are provided. The method for decoding video includes: receiving and parsing a bitstream of encoded video; extracting, from the bitstream, encoded image data of a current picture assigned to a maximum coding unit of the current picture, information regarding a coded depth of the maximum coding unit, information regarding an encoding mode, and coding unit pattern information indicating whether texture information of the maximum coding units has been encoded; and decoding the encoded image data for the maximum coding unit, based on the information regarding the coded depth of the maximum coding unit, the information regarding the encoding mode, and the coding unit pattern information.

公开(公告)号：US20150208065A1

公开(公告)日：2015-07-23

申请号：US14672840

申请日：2015-03-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Vadim SEREGIN ,  Il-koo KIM

IPC: H04N19/109 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176

CPC classification number: H04N19/109 ,  H04N19/105 ,  H04N19/11 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44 ,  H04N19/46 ,  H04N19/463 ,  H04N19/593 ,  H04N19/70 ,  H04N19/96

Abstract: A video decoding method involving intra prediction includes: parsing a most probable mode (MPM) flag of a block while parsing symbols of the block of an encoded video from a received bitstream; determining whether a predetermined number of a plurality of candidate intra prediction modes are used to predict an intra prediction mode of the block based on the MPM flag; when it is determined that the plurality of candidate intra prediction modes are used based on the MPM flag, determining the plurality of candidate intra prediction modes based on intra prediction modes of a left block and an upper block that are adjacent to the block while restoring the intra prediction mode of the block by using the parsed symbols.

Abstract translation: 涉及帧内预测的视频解码方法包括：从接收到的比特流解码编码视频的块的符号，解析块的最可能模式（MPM）标志; 确定是否使用预定数量的多个候选帧内预测模式来基于所述MPM标志来预测所述块的帧内预测模式; 当基于MPM标志确定使用多个候选帧内预测模式时，基于与块相邻的左块和上块的帧内预测模式确定多个候选帧内预测模式，同时恢复 通过使用解析的符号来进行块预测模式。

公开(公告)号：US20150195584A1

公开(公告)日：2015-07-09

申请号：US14656045

申请日：2015-03-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Il-koo KIM

IPC: H04N19/91 ,  H04N19/60

CPC classification number: H04N19/91 ,  H04N19/119 ,  H04N19/13 ,  H04N19/139 ,  H04N19/157 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/44 ,  H04N19/46 ,  H04N19/60

Abstract: Provided are entropy decoding and encoding methods of a video. The entropy decoding method includes obtaining a transformation unit significant coefficient flag indicating whether a non-zero transformation coefficient exists in the transformation unit, from a bitstream, determining a context model for arithmetically 5 decoding the transformation unit significant coefficient flag, based on the transformation depth of the transformation unit and arithmetically decoding the transformation unit significant coefficient flag based on the determined context model.

公开(公告)号：US20150189291A1

公开(公告)日：2015-07-02

申请号：US14645988

申请日：2015-03-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Il-koo KIM

IPC: H04N19/18 ,  H04N19/60

CPC classification number: H04N19/91 ,  H04N19/119 ,  H04N19/13 ,  H04N19/139 ,  H04N19/157 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/44 ,  H04N19/46 ,  H04N19/60

Abstract: Provided are entropy decoding and encoding methods of a video. The entropy decoding method includes obtaining a transformation unit significant coefficient flag indicating whether a non-zero transformation coefficient exists in the transformation unit, from a bitstream, determining a context model for arithmetically 5 decoding the transformation unit significant coefficient flag, based on the transformation depth of the transformation unit and arithmetically decoding the transformation unit significant coefficient flag based on the determined context model.

Abstract translation: 提供了视频的熵解码和编码方法。 熵解码方法包括从比特流获得指示变换单元中是否存在非零变换系数的变换单位有效系数标记，基于变换深度确定算术5解码变换单位有效系数标志的上下文模型 并且基于所确定的上下文模型对变换单元有效系数标志进行算术解码。

公开(公告)号：US20150181255A1

公开(公告)日：2015-06-25

申请号：US14636571

申请日：2015-03-03

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Il-koo KIM ,  Jeong-hoon PARK

IPC: H04N19/91 ,  H04N19/61 ,  H04N19/13

CPC classification number: H04N19/91 ,  H04N19/129 ,  H04N19/13 ,  H04N19/136 ,  H04N19/18 ,  H04N19/1887 ,  H04N19/44 ,  H04N19/61 ,  H04N19/82 ,  H04N19/96

Abstract: Methods and apparatuses for arithmetic encoding/decoding of video data. The arithmetic decoding method includes arithmetically decoding prefix bit strings representing a two-dimensional location of a last significant coefficient in a block sequentially by using a context model, arithmetically decoding suffix bit strings in a bypass mode, and performing inverse binarization on the arithmetically decoded prefix bit strings and suffix bit strings to acquire the location of the last significant coefficient in the block.

公开(公告)号：US20150181225A1

公开(公告)日：2015-06-25

申请号：US14635725

申请日：2015-03-02

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Vadim SEREGIN ,  Il-koo KIM

IPC: H04N19/593 ,  H04N19/176

CPC classification number: H04N19/13 ,  H04N19/157 ,  H04N19/176 ,  H04N19/1883 ,  H04N19/44 ,  H04N19/593 ,  H04N19/60 ,  H04N19/91

Abstract: A method of decoding a video through symbol decoding includes parsing symbols of image blocks from a received bitstream; classifying a current symbol into a prefix bit string and a suffix bit string based on a threshold value determined according to a size of a current block; performing arithmetic decoding of the prefix bit string and the suffix bit string by using respective arithmetic decoding methods determined for each of the prefix bit string and the suffix bit string; performing inverse binarization of the prefix bit string and the suffix bit string by using respective binarization methods determined for each of the prefix bit string and the suffix bit string; and restoring the image blocks by performing an inverse transformation operation and a prediction operation on the current block by using the current symbol restored through the arithmetic decoding and the inverse binarization.

Abstract translation: 通过符号解码对视频进行解码的方法包括从接收到的比特流解析图像块的符号; 基于根据当前块的大小确定的阈值，将当前符号分类为前缀位串和后缀位串; 通过使用为每个前缀位串和后缀位串确定的相应的算术解码方法来执行前缀位串和后缀位串的算术解码; 通过使用为每个前缀位串和后缀位串确定的相应的二进制化方法来执行前缀位串和后缀位串的逆二值化; 以及通过使用通过算术解码和逆二值化恢复的当前符号对当前块执行逆变换操作和预测操作来恢复图像块。

公开(公告)号：US20150172698A1

公开(公告)日：2015-06-18

申请号：US14630194

申请日：2015-02-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Il-koo KIM

IPC: H04N19/513 ,  H04N19/176 ,  H04N19/103

CPC classification number: H04N19/52 ,  H04N19/103 ,  H04N19/105 ,  H04N19/176 ,  H04N19/46 ,  H04N19/51 ,  H04N19/513 ,  H04N19/573 ,  H04N19/577 ,  H04N19/583 ,  H04N19/96

Abstract: Provided is an inter prediction method including determining a collocated block of a current block of a current image from among blocks of an image that is restored prior to the current image; preferentially checking whether a first reference list from among reference lists of the collocated block is referred to and selectively checking whether a second reference list is referred to according to whether the first reference list is referred to; based on a result of the checking, determining a single collocated reference list from among the first reference list and the second reference list; determining a reference block of the current block by using motion information of the collocated reference list; and performing inter prediction on the current block by using the determined reference block.