公开(公告)号：US20130142265A1

公开(公告)日：2013-06-06

申请号：US13755530

申请日：2013-01-31

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Tammy LEE ,  Woo-jin HAN

IPC: H04N7/26

CPC classification number: H04N19/521 ,  H04N19/105 ,  H04N19/137 ,  H04N19/14 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/51 ,  H04N19/513 ,  H04N19/52 ,  H04N19/593 ,  H04N19/61

Abstract: Provided are a method and apparatus for estimating a motion vector using a plurality of motion vector predictors, an encoder, a decoder, and a decoding method. The method includes calculating spatial similarities between the current block and the plurality of neighboring partitions around the current block, selecting at least one of the neighboring partitions based on the calculated spatial similarities, and estimating a motion vector of the selected partition as the motion vector of the current block.

公开(公告)号：US20130128973A1

公开(公告)日：2013-05-23

申请号：US13746297

申请日：2013-01-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Woo-jin HAN ,  Sang-rae LEE ,  Tammy LEE ,  Jung-hye MIN

IPC: H04N7/26

CPC classification number: H04N19/154 ,  H04N19/105 ,  H04N19/124 ,  H04N19/172 ,  H04N19/176 ,  H04N19/177 ,  H04N19/43 ,  H04N19/46 ,  H04N19/58 ,  H04N19/61

Abstract: A method and apparatus for encoding and decoding an image by performing motion prediction and compensation on pictures in a group of pictures by selectively using a high-quality key picture that is previously encoded and restored, and a second picture that is previously encoded and restored. The method of encoding an image improves the prediction efficiency of an image by storing a key picture, which is encoded and restored to a high quality by reducing a loss caused by a quantization error using a small quantization coefficient, in a first storage unit and storing a previously encoded and restored second picture in a second storage unit, and then performing motion prediction and compensation by selectively using the key picture stored in the first storage unit and the second picture stored in the second storage unit while encoding a next picture in a group of pictures.

公开(公告)号：US20130058415A1

公开(公告)日：2013-03-07

申请号：US13670018

申请日：2012-11-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Tammy LEE ,  Woo-jin HAN ,  Kyo-hyuk LEE

IPC: H04N7/32

CPC classification number: H04N19/139 ,  H04N19/105 ,  H04N19/117 ,  H04N19/124 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184 ,  H04N19/51 ,  H04N19/513 ,  H04N19/52 ,  H04N19/61 ,  H04N19/70 ,  H04N19/865 ,  H04N19/96

Abstract: Provided are methods and apparatuses for encoding and decoding a motion vector. The method of encoding the motion vector includes: selecting, as a mode of encoding information about a motion vector predictor of the current block, a first mode in which information indicating the motion vector predictor from among at least one motion vector predictor is encoded or a second mode in which information indicating generation of the motion vector predictor based on blocks or pixels included in a previously encoded area adjacent to the current block is encoded; determining the motion vector predictor of the current block according to the selected mode and encoding the information about the motion vector predictor of the current block; and encoding a difference vector between the motion vector of the current block and the motion vector predictor of the current block.

公开(公告)号：US20190394490A1

公开(公告)日：2019-12-26

申请号：US16561766

申请日：2019-09-05

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yoon-mi HONG ,  Woo-jin HAN ,  Min-su CHEON ,  Jianle CHEN

IPC: H04N19/60 ,  H04N19/176 ,  G06F17/14 ,  H04N19/625 ,  H04N19/126

Abstract: A video encoding method, a video encoding apparatus, a video decoding method, and a video decoding apparatus are provided. The video encoding method includes producing a fast transform matrix based on a transform matrix which is used for frequency transformation on a block which has a predetermined size; producing a transformed block by transforming the block having the predetermined size by using the fast transform matrix; and performing scaling with respect to the transformed block in order to correct a difference between the transform matrix used for the frequency transformation and the fast transform matrix.

公开(公告)号：US20180310015A1

公开(公告)日：2018-10-25

申请号：US16016031

申请日：2018-06-22

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Woo-jin HAN ,  Elena ALSHINA ,  Jung-hye MIN ,  Alexander ALSHIN ,  Il-koo KIM ,  Nikolay SHLYAKHOV ,  Tammy LEE ,  Sun-il LEE ,  Min-su CHEON ,  Jianle CHEN ,  Vadim SEREGIN ,  Yoon-mi HONG

IPC: H04N19/50 ,  H04N19/96 ,  H04N19/86

CPC classification number: H04N19/59 ,  H04N19/117 ,  H04N19/119 ,  H04N19/139 ,  H04N19/147 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/197 ,  H04N19/30 ,  H04N19/44 ,  H04N19/50 ,  H04N19/513 ,  H04N19/52 ,  H04N19/593 ,  H04N19/61 ,  H04N19/80 ,  H04N19/82 ,  H04N19/86 ,  H04N19/96

Abstract: A method of encoding a video is provided, the method includes: determining a filtering boundary on which deblocking filtering is to be performed based on at least one data unit from among a plurality of coding units that are hierarchically configured according to depths indicating a number of times at least one maximum coding unit is spatially spilt, and a plurality of prediction units and a plurality of transformation units respectively for prediction and transformation of the plurality of coding units, determining filtering strength at the filtering boundary based on a prediction mode of a coding unit to which pixels adjacent to the filtering belong from among the plurality of coding units, and transformation coefficient values of the pixels adjacent to the filtering boundary, and performing deblocking filtering on the filtering boundary based on the determined filtering strength.

公开(公告)号：US20170238012A1

公开(公告)日：2017-08-17

申请号：US15586935

申请日：2017-05-04

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jung-hye MIN ,  Sun-il LEE ,  Woo-jin HAN

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

CPC classification number: H04N19/593 ,  H04N19/105 ,  H04N19/11 ,  H04N19/14 ,  H04N19/167 ,  H04N19/176 ,  H04N19/182 ,  H04N19/196 ,  H04N19/513 ,  H04N19/80 ,  H04N19/91

Abstract: An apparatus for decoding an image, the apparatus including an entropy decoder configured to extract an intra prediction mode of a current block, and an intra prediction performer configured to determine a number of neighboring pixels located on a left side of the current block or an upper side of the current block, determine a location of one or more neighboring pixels, the intra prediction mode indicating a particular direction among a plurality of directions, the particular direction being indicated by using one of a dx number in a horizontal direction and a fixed number in a vertical direction, and the location of the one or more neighboring pixels being determined based on a shift operation.

公开(公告)号：US20170118469A1

公开(公告)日：2017-04-27

申请号：US15400424

申请日：2017-01-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jung-hye MIN ,  Woo-jin HAN ,  Il-koo KIM

IPC: H04N19/119 ,  H04N19/50 ,  H04N19/44 ,  H04N19/159

CPC classification number: H04N19/50 ,  H04N19/117 ,  H04N19/119 ,  H04N19/139 ,  H04N19/147 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/197 ,  H04N19/30 ,  H04N19/44 ,  H04N19/513 ,  H04N19/52 ,  H04N19/59 ,  H04N19/593 ,  H04N19/61 ,  H04N19/80 ,  H04N19/82 ,  H04N19/86 ,  H04N19/96

Abstract: Provided are a method and apparatus for encoding a video and a method and apparatus for decoding a video. The encoding method includes: splitting a picture of the video into one or more maximum coding units; encoding the picture based on coding units according to depths which are obtained based on a partition type determined according to the depths of the coding units according to depths, determining coding units according to coded depths with respect to each of the coding units according to depths, and thus determining coding units having a tree structure; and outputting data that is encoded based on the partition type and the coding units having the tree structure, information about the coded depths and an encoding mode, and coding unit structure information indicating a size and a variable depth of a coding unit.

公开(公告)号：US20170064317A1

公开(公告)日：2017-03-02

申请号：US15352312

申请日：2016-11-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Yoon-mi HONG ,  Woo-jin HAN

IPC: H04N19/36 ,  H04N19/124 ,  H04N19/63 ,  H04N19/159 ,  H04N19/625 ,  H04N19/61 ,  H04N19/13

CPC classification number: H04N19/36 ,  H04N19/124 ,  H04N19/13 ,  H04N19/159 ,  H04N19/174 ,  H04N19/184 ,  H04N19/40 ,  H04N19/42 ,  H04N19/61 ,  H04N19/625 ,  H04N19/63 ,  H04N19/98

Abstract: Provided are a method and apparatus for encoding a video signal and a method and apparatus for decoding a video signal. The method of encoding the video signal includes: determining an optimum scaling bit depth of the video signal in consideration of a maximum bit number of an intermediate value obtained during transformation of the video signal and a maximum bit precision of the video signal; scaling the video signal according to a local shift value corresponding to a difference between the determined optimum scaling bit depth and an original bit depth of the video signal; and transforming the scaled video signal.

公开(公告)号：US20170064315A1

公开(公告)日：2017-03-02

申请号：US15352203

申请日：2016-11-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Yoon-mi HONG ,  Woo-jin HAN

IPC: H04N19/36 ,  H04N19/124 ,  H04N19/63 ,  H04N19/159 ,  H04N19/625 ,  H04N19/61 ,  H04N19/13

CPC classification number: H04N19/36 ,  H04N19/124 ,  H04N19/13 ,  H04N19/159 ,  H04N19/174 ,  H04N19/184 ,  H04N19/40 ,  H04N19/42 ,  H04N19/61 ,  H04N19/625 ,  H04N19/63 ,  H04N19/98

Abstract: Provided are a method and apparatus for encoding a video signal and a method and apparatus for decoding a video signal. The method of encoding the video signal includes: determining an optimum scaling bit depth of the video signal in consideration of a maximum bit number of an intermediate value obtained during transformation of the video signal and a maximum bit precision of the video signal; scaling the video signal according to a local shift value corresponding to a difference between the determined optimum scaling bit depth and an original bit depth of the video signal; and transforming the scaled video signal.

Abstract translation: 提供了一种用于对视频信号进行编码的方法和装置以及用于对视频信号进行解码的方法和装置。 视频信号的编码方法包括：考虑在视频信号的变换期间获得的中间值的最大位数和视频信号的最大位精度，确定视频信号的最佳缩放比特深度; 根据与确定的最佳缩放比特深度和视频信号的原始比特深度之间的差对应的本地移位值对视频信号进行缩放; 并转换缩放的视频信号。

公开(公告)号：US20160156924A1

公开(公告)日：2016-06-02

申请号：US15016790

申请日：2016-02-05

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sun-il LEE ,  Min-su CHEON ,  Woo-jin HAN

IPC: H04N19/51 ,  H04N19/176 ,  H04N19/70 ,  H04N19/119 ,  H04N19/46 ,  H04N19/103 ,  H04N19/61 ,  H04N19/96 ,  H04N19/137 ,  H04N19/157 ,  H04N19/543 ,  H04N19/139 ,  H04N19/122

Abstract: An apparatus for decoding a video by parsing asymmetric partition information indicating whether partition types include asymmetric partition types, from a bitstream of an encoded image, determining at least one coding unit included in a maximum coding unit by using split information parsed from the received bitstream, determining at least one prediction unit of a coding unit among the at least one coding unit, by using the asymmetric partition information and information about a partition type of the coding unit parsed from the received bitstream, and performing motion compensation using the prediction units for the coding unit.