公开(公告)号：US20150178891A1

公开(公告)日：2015-06-25

申请号：US14636805

申请日：2015-03-03

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Alexander ALSHIN ,  Nikolay SHLYAKHOV ,  Byeong-doo CHOI ,  Yoon-mi HONG ,  Woo-jin HAN ,  Tammy LEE

IPC: G06T3/40 ,  H04N19/80 ,  H04N19/59 ,  H04N19/30 ,  H04N19/117 ,  H04N19/182 ,  H04N7/01 ,  H04N19/48 ,  H04N19/523

CPC classification number: G06T3/4007 ,  G06F17/175 ,  H04N7/014 ,  H04N19/117 ,  H04N19/182 ,  H04N19/30 ,  H04N19/48 ,  H04N19/523 ,  H04N19/59 ,  H04N19/80

Abstract: Provided are a method and apparatus for interpolating an image. The method includes: selecting a first filter, from among a plurality of different filters, for interpolating between pixel values of integer pixel units, according to an interpolation location; and generating at least one pixel value of at least one fractional pixel unit by interpolating between the pixel values of the integer pixel units by using the selected first filter.

公开(公告)号：US20150172696A1

公开(公告)日：2015-06-18

申请号：US14630144

申请日：2015-02-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Jianle CHEN ,  Woo-jin HAN

IPC: H04N19/513 ,  H04N19/105 ,  H04N19/176

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：US20150124881A1

公开(公告)日：2015-05-07

申请号：US14597724

申请日：2015-01-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jung-hye MIN ,  Elena ALSHINA ,  Woo-jin HAN

IPC: H04N19/159 ,  H04N19/186 ,  H04N19/105

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/107 ,  H04N19/11 ,  H04N19/122 ,  H04N19/13 ,  H04N19/176 ,  H04N19/182 ,  H04N19/184 ,  H04N19/186 ,  H04N19/30 ,  H04N19/44 ,  H04N19/50 ,  H04N19/593 ,  H04N19/96

Abstract: A method for decoding an image including performing intra prediction on a chrominance block according to whether the intra prediction mode of the chrominance block is equal to an intra prediction mode of a luminance block.

Abstract translation: 一种解码图像的方法，包括根据色度块的帧内预测模式是否等于亮度块的帧内预测模式对色度块执行帧内预测。

公开(公告)号：US20150117532A1

公开(公告)日：2015-04-30

申请号：US14597808

申请日：2015-01-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jung-hye MIN ,  Elena ALSHINA ,  Woo-jin HAN

IPC: H04N19/50 ,  H04N19/44

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/107 ,  H04N19/11 ,  H04N19/122 ,  H04N19/13 ,  H04N19/176 ,  H04N19/182 ,  H04N19/184 ,  H04N19/186 ,  H04N19/30 ,  H04N19/44 ,  H04N19/50 ,  H04N19/593 ,  H04N19/96

Abstract: A method for decoding an image including performing intra prediction on a chrominance block according to whether the intra prediction mode of the chrominance block is equal to an intra prediction mode of a luminance block.

公开(公告)号：US20240292012A1

公开(公告)日：2024-08-29

申请号：US18656029

申请日：2024-05-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ki-ho CHOI ,  Min-soo PARK ,  Elena ALSHINA

IPC: H04N19/44 ,  H04N19/122 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

CPC classification number: H04N19/45 ,  H04N19/122 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

Abstract: A method and apparatus for performing transformation and inverse transformation on a current block by using multi-core transform kernels in video encoding and decoding processes. A video decoding method may include obtaining, from a bitstream, multi-core transformation information indicating whether multi-core transformation kernels are to be used according to a size of a current block; obtaining horizontal transform kernel information and vertical transform kernel information from the bitstream when the multi-core transformation kernels are used according to the multi-core transformation information; determining a horizontal transform kernel for the current block according to the horizontal transform kernel information; determining a vertical transform kernel for the current block according to the vertical transform kernel information; and performing inverse transformation on the current block by using the horizontal transform kernel and the vertical transform kernel.

公开(公告)号：US20240129492A1

公开(公告)日：2024-04-18

申请号：US18514011

申请日：2023-11-20

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Alexander ALSHIN

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/176 ,  H04N19/573

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/176 ,  H04N19/573

Abstract: Provided is a video decoding method including: obtaining a first motion vector indicating a first reference block of a current block in a first reference picture and a second motion vector indicating a second reference block of the current block in a second reference picture; obtaining a parameter related to pixel group unit motion compensation of the current block, based on at least one of information of the parameter related to the pixel group unit motion compensation and a parameter related to an image including the current picture; generating a prediction block by performing, with respect to the current block, block unit motion compensation based on the first motion vector and the second motion vector and performing the pixel group unit motion compensation based on the parameter related to the pixel group unit motion compensation; and reconstructing the current block. Here, a pixel group may include at least one pixel.

公开(公告)号：US20220210406A1

公开(公告)日：2022-06-30

申请号：US17696519

申请日：2022-03-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ki-ho CHOI ,  Min-woo PARK ,  Elena ALSHINA ,  Chan-yul KIM ,  In-kwon CHOI

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/122 ,  H04N19/13 ,  H04N19/129 ,  H04N19/44

Abstract: Provided is a method of decoding a video according to an embodiment, the method including determining at least one processing block for splitting the video; determining an order of determining at least one largest coding unit in the at least one processing block; determining at least one largest coding unit on the basis of the determined order; and decoding the determined at least one largest coding unit, wherein the order is one of a plurality of orders for determining a largest coding unit.

公开(公告)号：US20210258578A1

公开(公告)日：2021-08-19

申请号：US17167850

申请日：2021-02-04

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Mikhail Mishurovskiy ,  Alexander Alshin

IPC: H04N19/124 ,  H04N19/122 ,  H04N19/182 ,  H04N19/91 ,  H04N19/44 ,  H04N19/61 ,  H04N19/126 ,  H04N19/70 ,  H04N19/137 ,  H04N19/51 ,  H04N19/194 ,  H04N19/11 ,  H04N19/109 ,  H04N19/18 ,  H04N19/537 ,  H04N19/46 ,  H04N19/593 ,  H04N19/63 ,  H04N19/13 ,  H04N19/436 ,  H04N19/139 ,  H04N19/176 ,  H04N19/513 ,  H04N19/57

Abstract: An image decoding method and apparatus according to an embodiment may extract, from a bitstream, a quantization coefficient generated through core transformation, secondary transformation, and quantization; generate an inverse-quantization coefficient by performing inverse quantization on the quantization coefficient; generate a secondary inverse-transformation coefficient by performing secondary inverse-transformation on a low frequency component of the inverse-quantization coefficient, the secondary inverse-transformation corresponding to the secondary transformation; and perform core inverse-transformation on the secondary inverse-transformation coefficient, the core inverse-transformation corresponding to the core transformation.

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：US20180139441A1

公开(公告)日：2018-05-17

申请号：US15573216

申请日：2016-05-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ki-ho CHOI ,  Min-woo PARK ,  Elena ALSHINA ,  Chan-yul KIM ,  In-kwon CHOI

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/44

Abstract: Provided is a method of decoding a video according to an embodiment, the method including determining at least one processing block for splitting the video; determining an order of determining at least one largest coding unit in the at least one processing block; determining at least one largest coding unit on the basis of the determined order; and decoding the determined at least one largest coding unit, wherein the order is one of a plurality of orders for determining a largest coding unit.