公开(公告)号：US20150178890A1

公开(公告)日：2015-06-25

申请号：US14636787

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 ,  H04N7/01 ,  H04N19/523 ,  H04N19/117 ,  H04N19/182 ,  H04N19/48 ,  H04N19/59

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.

Abstract translation: 提供了一种用于内插图像的方法和装置。 该方法包括：根据插值位置，从多个不同滤波器中选择第一滤波器，用于在整数像素单元的像素值之间进行内插; 以及通过使用所选择的第一滤波器在整数像素单元的像素值之间进行内插来生成至少一个分数像素单元的至少一个像素值。

公开(公告)号：US20150131742A1

公开(公告)日：2015-05-14

申请号：US14603020

申请日：2015-01-22

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Alexander ALSHIN

IPC: H04N19/44 ,  H04N19/176

CPC classification number: H04N19/463 ,  G06T5/001 ,  H04N19/117 ,  H04N19/137 ,  H04N19/14 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/189 ,  H04N19/44 ,  H04N19/50 ,  H04N19/625 ,  H04N19/85 ,  H04N19/89 ,  H04N19/90

Abstract: A video encoding method and apparatus and video decoding method and apparatus generate a restored image having a minimum error with respect to an original image based on offset merge information indicating whether offset parameters of a current block and at least one neighboring block from among blocks of video are identical.

Abstract translation: 视频编码方法和装置以及视频解码方法和装置基于偏移合并信息生成相对于原始图像具有最小误差的恢复图像，该偏移合并信息指示视频块中的当前块和至少一个相邻块的偏移参数 是相同的

公开(公告)号：US20130083849A1

公开(公告)日：2013-04-04

申请号：US13686499

申请日：2012-11-27

Applicant: Samsung Electronics Co., Ltd.

Inventor： Elena ALSHINA ,  Alexander ALSHIN ,  Vadim SEREGIN ,  Nikolay SHLYAKHOV ,  Maxim KOROTEEV

IPC: H04N7/34

CPC classification number: H04N19/13 ,  H04N19/11 ,  H04N19/117 ,  H04N19/119 ,  H04N19/176 ,  H04N19/182 ,  H04N19/198 ,  H04N19/33 ,  H04N19/50 ,  H04N19/593 ,  H04N19/82 ,  H04N19/91

Abstract: A video encoding method and apparatus and a video decoding method and apparatus. In the video encoding method, a first predicted coding unit of a current coding unit that is to be encoded is produced, a second predicted coding unit is produced by changing a value of each pixel of the first predicted coding unit by using each pixel of the first predicted coding unit and at least one neighboring pixel of each pixel, and the difference between the current coding unit and the second predicted coding unit is encoded, thereby improving video prediction efficiency.

公开(公告)号：US20130077686A1

公开(公告)日：2013-03-28

申请号：US13683749

申请日：2012-11-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Alexander ALSHIN ,  Vadim SEREGIN ,  Nikolay SHLYAKHOV ,  Maxim KOROTEEV

IPC: H04N7/32

CPC classification number: H04N19/13 ,  H04N19/11 ,  H04N19/117 ,  H04N19/119 ,  H04N19/176 ,  H04N19/182 ,  H04N19/198 ,  H04N19/33 ,  H04N19/50 ,  H04N19/593 ,  H04N19/82 ,  H04N19/91

Abstract: A video encoding method and apparatus and a video decoding method and apparatus. In the video encoding method, a first predicted coding unit of a current coding unit that is to be encoded is produced, a second predicted coding unit is produced by changing a value of each pixel of the first predicted coding unit by using each pixel of the first predicted coding unit and at least one neighboring pixel of each pixel, and the difference between the current coding unit and the second predicted coding unit is encoded, thereby improving video prediction efficiency.

公开(公告)号：US20240292022A1

公开(公告)日：2024-08-29

申请号：US18652497

申请日：2024-05-01

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Alexander ALSHIN ,  Elena ALSHINA

IPC: H04N19/577 ,  H04N19/105 ,  H04N19/136 ,  H04N19/176 ,  H04N19/182 ,  H04N19/523 ,  H04N19/537

CPC classification number: H04N19/577 ,  H04N19/105 ,  H04N19/136 ,  H04N19/176 ,  H04N19/182 ,  H04N19/523 ,  H04N19/537

Abstract: A video decoding and video encoding method of performing inter prediction in a bi-directional motion prediction mode, in which a prediction pixel value of a current block may be generated by not only using a pixel value of a first reference block of a first reference picture and a pixel value of a second reference block of a second reference picture, but also using a first gradient value of the first reference block and a second gradient value of the second reference block, in a bi-directional motion prediction mode. Accordingly, encoding and decoding efficiency may be increased since a prediction block similar to an original block may be generated.

公开(公告)号：US20210258579A1

公开(公告)日：2021-08-19

申请号：US17167866

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：US20210203990A1

公开(公告)日：2021-07-01

申请号：US16075439

申请日：2017-02-03

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04N19/61 ,  H04N19/159 ,  H04N19/186 ,  H04N19/176

Abstract: Provided are a method and apparatus for performing transformation and inverse transformation on a chroma block by using a variable transform kernel, during video encoding and decoding processes. A video decoding method includes: obtaining, from a bitstream, chroma multi-transform kernel information indicating whether a chroma transform kernel for inverse transformation of a chroma block is determined to be among a plurality of chroma transform kernels; while determining whether the chroma transform kernel is determined to be among the plurality of chroma transform kernels according to the chroma multi-transform kernel information, determining whether to determine the chroma transform kernel by using a luma transform kernel; and performing inverse transformation on the chroma block by using the chroma transform kernel.

公开(公告)号：US20200296358A1

公开(公告)日：2020-09-17

申请号：US16759540

申请日：2018-08-31

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jung-hye MIN ,  Alexander ALSHIN ,  Elena ALSHINA

IPC: H04N19/105 ,  H04N19/182 ,  H04N19/184 ,  H04N19/85 ,  G06T5/20

Abstract: Provided is a method of decoding an image, the method including determining at least one reference region to be referenced by a target region in the image to which a low-quality coding mode is applied; extracting a certain type of information from the determined at least one reference region; and changing pixel values of the target region, based on the extracted type of information.

公开(公告)号：US20180309990A1

公开(公告)日：2018-10-25

申请号：US15767307

申请日：2016-10-13

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Mikhail MISHUROVSKIY ,  Alexander ALSHIN

IPC: H04N19/124 ,  H04N19/44 ,  H04N19/176 ,  H04N19/57 ,  H04N19/182 ,  H04N19/122 ,  H04N19/139 ,  H04N19/513

CPC classification number: H04N19/124 ,  H04N19/109 ,  H04N19/11 ,  H04N19/122 ,  H04N19/126 ,  H04N19/13 ,  H04N19/137 ,  H04N19/139 ,  H04N19/176 ,  H04N19/18 ,  H04N19/182 ,  H04N19/194 ,  H04N19/44 ,  H04N19/45 ,  H04N19/46 ,  H04N19/51 ,  H04N19/513 ,  H04N19/537 ,  H04N19/57 ,  H04N19/593 ,  H04N19/61 ,  H04N19/63 ,  H04N19/70 ,  H04N19/91

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：US20180035114A1

公开(公告)日：2018-02-01

申请号：US15727003

申请日：2017-10-06

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Elena ALSHINA ,  Alexander ALSHIN ,  Jeong-hoon PARK

IPC: H04N19/14 ,  H04N19/463 ,  H04N19/103 ,  H04N19/186 ,  H04N19/13 ,  H04N19/91 ,  H04N19/82 ,  H04N19/86

CPC classification number: H04N19/14 ,  H04N19/103 ,  H04N19/13 ,  H04N19/186 ,  H04N19/463 ,  H04N19/82 ,  H04N19/86 ,  H04N19/91

Abstract: The present disclosure relates to signaling of sample adaptive offset (SAO) parameters determined to minimize an error between an original image and a reconstructed image in video encoding and decoding operations. An SAO decoding method includes obtaining context-encoded leftward SAO merge information and context-encoded upward SAO merge information from a bitstream of a largest coding unit (MCU); obtaining SAO on/off information context-encoded with respect to each color component, from the bitstream; if the SAO on/off information indicates to perform SAO operation, obtaining absolute offset value information for each SAO category bypass-encoded with respect to each color component, from the bitstream; and obtaining one of band position information and edge class information bypass-encoded with respect to each color component, from the bitstream.