公开(公告)号：US12063349B2

公开(公告)日：2024-08-13

申请号：US16340877

申请日：2016-10-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Bo-ra Jin ,  Min-woo Park ,  Chan-yul Kim ,  Jung-hye Min

IPC: H04N19/119 ,  H04N19/105 ,  H04N19/129 ,  H04N19/137 ,  H04N19/169 ,  H04N19/176 ,  H04N19/44 ,  H04N19/51 ,  H04N19/52 ,  H04N19/96

CPC classification number: H04N19/105 ,  H04N19/119 ,  H04N19/129 ,  H04N19/137 ,  H04N19/176 ,  H04N19/44 ,  H04N19/51 ,  H04N19/52

Abstract: Provided are a method and device for encoding or decoding an image by using a block map. In the method and device for decoding an image according to an embodiment set forth herein, a bitstream of an encoded image is received, one or more blocks in a picture are determined using split information obtained from the bitstream, a block map indicating whether or not a previous block among the one or more blocks has been decoded is determined, a neighboring region which is available to be referred to for a current block to be decoded in a certain scan order among the one or more blocks is determined, and the current block is decoded based on the neighboring region which is available to be referred to.

公开(公告)号：US11949864B2

公开(公告)日：2024-04-02

申请号：US18301013

申请日：2023-04-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Min-soo Park ,  Min-woo Park ,  Bo-ra Jin

IPC: H04N19/119 ,  H04N19/105 ,  H04N19/13 ,  H04N19/176

CPC classification number: H04N19/119 ,  H04N19/105 ,  H04N19/13 ,  H04N19/176

Abstract: Provided are an encoding method and apparatus, and a decoding method and apparatus for adaptively selecting a context model used to entropy-encode and entropy-decode a syntax element, based on various shapes of coding units. The image decoding method includes: determining a context model based on block shape information including at least one of a shape, direction, width, ratio of width and height, or size of a coding unit; obtaining, from a bitstream based on the context model, information about a split shape mode for splitting the coding unit; and determining a split shape mode of the coding unit, based on the information about the split shape mode.

公开(公告)号：US20240015297A1

公开(公告)日：2024-01-11

申请号：US18471390

申请日：2023-09-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Na-rae CHOI ,  Bo-ra Jin ,  NMin-Woo Park

IPC: H04N19/593 ,  H04N19/176 ,  H04N19/132

CPC classification number: H04N19/593 ,  H04N19/176 ,  H04N19/132

Abstract: Provided is an image decoding method including: generating an intra prediction value of a current sample based on a position of the current sample in a current block and an intra prediction mode of the current block; determining a sample value of at least one filtering reference sample to be filtered and a first weight with respect to the filtering reference sample and a second weight with respect to the intra prediction value of the current sample; generating a filtered prediction sample value of the current sample based on the determined sample value of the filtering reference sample to be filtered, the intra prediction value of the current sample, the first weight with respect to the filtering reference sample, and the second weight with respect to the intra prediction value of the current sample; and generating a prediction block of the current block including the filtered prediction sample value.

公开(公告)号：US11570449B2

公开(公告)日：2023-01-31

申请号：US17521310

申请日：2021-11-08

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Na-rae Choi ,  Bo-ra Jin

IPC: H04N19/159 ,  H04N19/103 ,  H04N19/176

Abstract: Provided are a method and apparatus for performing intra prediction, in a video encoding and decoding procedure, by configuring an additional mode set based on most probable mode (MPM) modes of a current block, and determining an intra prediction mode of the current block, based on the MPM modes and the additional mode set. To solve the technical problems, a video decoding method provided in the present disclosure includes configuring an additional mode set based on MPM modes of a current block; determining an intra prediction mode of the current block, based on the MPM modes and the additional mode set; and performing intra prediction on the current block, based on the intra prediction mode.

公开(公告)号：US20220394252A1

公开(公告)日：2022-12-08

申请号：US17882236

申请日：2022-08-05

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Min-woo PARK ,  Bo-ra Jin ,  Chan-yul Kim ,  Jung-hye Min

IPC: H04N19/119 ,  H04N19/176 ,  H04N19/167 ,  H04N19/14 ,  H04N19/172

Abstract: Provided are a method and apparatus for encoding or decoding a coding unit on an outline of a picture. An image decoding method and apparatus according to an embodiment determine whether a current coding unit extends across an outline of a picture, by comparing a location of the current coding unit in the picture to at least one of a width and a height of the picture, split the current coding unit in at least one direction into a plurality of coding units based on a shape of the current coding unit upon determining that the current coding unit extends across the outline of the picture, obtain block shape information and split type information of the current coding unit from a bitstream and split the current coding unit into a plurality of coding units based on the block shape information and the split type information upon determining that the current coding unit does not extend across the outline of the picture, and decode a coding unit that is no longer split among the plurality of coding units.

公开(公告)号：US11178405B2

公开(公告)日：2021-11-16

申请号：US16651126

申请日：2018-10-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Na-rae Choi ,  Bo-ra Jin

IPC: H04N19/159 ,  H04N19/103 ,  H04N19/176

Abstract: Provided are a method and apparatus for performing intra prediction, in a video encoding and decoding procedure, by configuring an additional mode set based on most probable mode (MPM) modes of a current block, and determining an intra prediction mode of the current block, based on the MPM modes and the additional mode set. To solve the technical problems, a video decoding method provided in the present disclosure includes configuring an additional mode set based on MPM modes of a current block; determining an intra prediction mode of the current block, based on the MPM modes and the additional mode set; and performing intra prediction on the current block, based on the intra prediction mode.

公开(公告)号：US11109039B2

公开(公告)日：2021-08-31

申请号：US16651126

申请日：2018-10-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Na-rae Choi ,  Bo-ra Jin

IPC: H04N19/159 ,  H04N19/103 ,  H04N19/176

Abstract: Provided are a method and apparatus for performing intra prediction, in a video encoding and decoding procedure, by configuring an additional mode set based on most probable mode (MPM) modes of a current block, and determining an intra prediction mode of the current block, based on the MPM modes and the additional mode set. To solve the technical problems, a video decoding method provided in the present disclosure includes configuring an additional mode set based on MPM modes of a current block; determining an intra prediction mode of the current block, based on the MPM modes and the additional mode set; and performing intra prediction on the current block, based on the intra prediction mode.

公开(公告)号：US10742974B2

公开(公告)日：2020-08-11

申请号：US15781776

申请日：2016-12-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Min-woo Park ,  Bo-ra Jin ,  Na-rae Choi ,  In-kwon Choi

IPC: H04N19/176 ,  H04N19/11 ,  H04N19/44 ,  H04N19/159

Abstract: Provided are a video decoding method including determining at least one first block for partitioning a current frame which is one of at least one frame included in a video, determining a first prediction mode indicating an intra-prediction method to be performed on a current first block which is one of the at least one first block based on first intra-prediction mode information obtained from a bitstream when intra-prediction is performed on the current first block, determining a plurality of second blocks included in the current first block, determining second prediction modes indicating intra-prediction methods to be performed on the plurality of second blocks based on at least one of the first prediction mode and second intra-prediction mode information obtained from the bitstream with respect to each of the plurality of second blocks, and decoding the video by performing intra-prediction based on the first prediction mode and the second prediction mode; and a video decoding apparatus capable of performing the video decoding method. Provided are also a video encoding method performed in a way opposite or similar to the video decoding method; and a video encoding apparatus capable of performing the video encoding method.

公开(公告)号：US10595050B2

公开(公告)日：2020-03-17

申请号：US15777029

申请日：2016-11-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Bo-ra Jin ,  Min-woo Park

IPC: H04N19/85 ,  H04N19/176 ,  H04N19/117 ,  H04N19/46 ,  H04N19/107 ,  H04N19/124 ,  H04N19/91 ,  H04N19/44 ,  H04N19/80 ,  H04N19/14 ,  H04N19/82

Abstract: Provided is an image encoding or decoding method and apparatus for post-processing an intra- or inter-predicted block based on pixel gradients. In the image decoding method and apparatus according to an embodiment, prediction mode information of a current block to be decoded and filtering information indicating whether to filter a predicted block are obtained from a bitstream, a first predicted block of the current block is generated based on the prediction mode information, a second predicted block is generated by changing a pixel value of a current pixel in the first predicted block based on gradient values between the current pixel and adjacent pixels of the current pixel, when the filtering information indicates to filter the first predicted block, a residual corresponding to a difference value between the current block and the second predicted block is reconstructed by extracting the residual from the bitstream, and the current block is decoded by adding the residual to the second predicted block.