公开(公告)号：US11863783B2

公开(公告)日：2024-01-02

申请号：US17677498

申请日：2022-02-22

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Quockhanh Dinh ,  Minwoo Park ,  Minsoo Park ,  Kwangpyo Choi

IPC: H04N19/51 ,  H04N19/137 ,  H04N19/124 ,  H04N19/43 ,  H04N19/91 ,  H04N19/17

CPC classification number: H04N19/51 ,  H04N19/124 ,  H04N19/137 ,  H04N19/17 ,  H04N19/43 ,  H04N19/91

Abstract: A method of reconstructing an optical flow by using artificial intelligence (AI), including obtaining, from a bitstream, feature data of a current residual optical flow for a current image; obtaining the current residual optical flow by applying the feature data of the current residual optical flow to a neural-network-based first decoder; obtaining a current predicted optical flow based on at least one of a previous optical flow, feature data of the previous optical flow, and feature data of a previous residual optical flow; and reconstructing a current optical flow based on the current residual optical flow and the current predicted optical flow.

公开(公告)号：US20230319283A1

公开(公告)日：2023-10-05

申请号：US18328503

申请日：2023-06-02

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Narae Choi ,  Minwoo Park ,  Minsoo Park ,  Seungsoo Jeong ,  Kiho Choi ,  Woongil Choi ,  Anish Tamse ,  Yinji Piao

IPC: H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/80

CPC classification number: H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/80

Abstract: Provided is a video decoding method including: obtaining, from a bitstream, intra prediction mode information indicating an intra prediction mode of a current block; determining an interpolation filter set to be used in prediction of the current block, based on at least one of a size of the current block and the intra prediction mode indicated by the intra prediction mode information; determining a reference location to which a current sample of the current block refers according to the intra prediction mode; determining, in the interpolation filter set, an interpolation filter that corresponds to the reference location; determining a prediction value of the current sample, according to reference samples of the current block and the interpolation filter; and reconstructing the current block, based on the prediction value of the current sample.

公开(公告)号：US11706435B2

公开(公告)日：2023-07-18

申请号：US17712180

申请日：2022-04-03

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Heechul Yang ,  Minsoo Park

IPC: H04N19/44 ,  H04N19/124 ,  H04N19/176 ,  H04N19/46 ,  H04N19/96

CPC classification number: H04N19/44 ,  H04N19/124 ,  H04N19/176 ,  H04N19/46 ,  H04N19/96

Abstract: Provided is an image decoding method including determining a predicted quantization parameter of a current quantization group determined according to at least one of block split information and block size information, determining a difference quantization parameter of the current quantization group, determining a quantization parameter of the current quantization group, based on the predicted quantization parameter and the difference quantization parameter of the current quantization group, and inverse quantizing a current block included in the current quantization group, according to the quantization parameter of the current quantization group.

公开(公告)号：US11706433B2

公开(公告)日：2023-07-18

申请号：US17712174

申请日：2022-04-03

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Heechul Yang ,  Minsoo Park

IPC: H04N19/44 ,  H04N19/124 ,  H04N19/176 ,  H04N19/46 ,  H04N19/96

CPC classification number: H04N19/44 ,  H04N19/124 ,  H04N19/176 ,  H04N19/46 ,  H04N19/96

Abstract: Provided is an image decoding method including determining a predicted quantization parameter of a current quantization group determined according to at least one of block split information and block size information, determining a difference quantization parameter of the current quantization group, determining a quantization parameter of the current quantization group, based on the predicted quantization parameter and the difference quantization parameter of the current quantization group, and inverse quantizing a current block included in the current quantization group, according to the quantization parameter of the current quantization group.

公开(公告)号：US11616963B2

公开(公告)日：2023-03-28

申请号：US17053571

申请日：2019-05-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Minwoo Park ,  Minsoo Park ,  Kiho Choi ,  Narae Choi ,  Woongil Choi ,  Chanyul Kim ,  Seungsoo Jeong ,  Anish Tamse ,  Yinji Piao

IPC: H04N19/186 ,  H04N19/176 ,  H04N19/119 ,  H04N19/122 ,  H04N19/70

Abstract: Provided is an image decoding method including determining a plurality of coding units in a chroma image by hierarchically splitting the chroma image, based on a split shape mode of blocks in the chroma image of a current image, and decoding the current image, based on the plurality of coding units in the chroma image. In this regard, the determining of the plurality of coding units in the chroma image may include, when a size or an area of a chroma block from among a plurality of chroma blocks to be generated by splitting a current chroma block in the chroma image is equal to or smaller than a preset size or a preset area, not allowing splitting of the current chroma block based on a split shape mode of the current chroma block, and determining at least one coding unit included in the current chroma block.

公开(公告)号：US20230030841A1

公开(公告)日：2023-02-02

申请号：US17967654

申请日：2022-10-17

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Woongil CHOI ,  Gahyun Ryu ,  Minsoo Park ,  Minwoo Park ,  Seungsoo Jeong ,  Kwangpyo Choi ,  Kiho Choi ,  Narae Choi ,  Anish Tamse ,  Yinji Piao

IPC: H04N19/174 ,  H04N19/172 ,  H04N19/119 ,  H04N19/105 ,  H04N19/70

Abstract: Provided is a video decoding method including obtaining identification information of a first tile and identification information of a last tile from a bitstream, wherein the first and last tiles are included in a first slice, determining an index difference between the first tile and the last tile, based on a result of comparing the identification information of the first tile with the identification information of the last tile, determining the number of tiles included in the first slice, by using the index difference between the first tile and the last tile, and decoding a plurality of tiles included in the first slice according to an encoding order by using the number of tiles included in the first slice, the identification information of the first tile, and the identification information of the last tile.

公开(公告)号：US11546602B2

公开(公告)日：2023-01-03

申请号：US17271087

申请日：2019-08-26

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Anish Tamse ,  Woongil Choi ,  Minwoo Park ,  Seungsoo Jeong ,  Yinji Piao ,  Gahyun Ryu ,  Kiho Choi ,  Narae Choi ,  Minsoo Park

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/513

Abstract: Provided is an image decoding method including determining a current chroma block having a rectangular shape corresponding to a current luma block included in one of a plurality of luma blocks, determining a piece of motion information for the current chroma block and a chroma block adjacent to the current chroma block by using motion information of the current chroma block and the adjacent chroma block, and performing inter prediction on the current chroma block and the adjacent chroma block by using the piece of motion information for the current chroma block and the adjacent chroma block to generate prediction blocks of the current chroma block and the adjacent chroma block.

公开(公告)号：US11509925B2

公开(公告)日：2022-11-22

申请号：US17045376

申请日：2019-04-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seungsoo Jeong ,  Minwoo Park ,  Anish Tamse ,  Minsoo Park ,  Kiho Choi ,  Yinji Piao ,  Narae Choi ,  Woongil Choi

IPC: H04N11/02 ,  H04N19/52 ,  H04N19/119 ,  H04N19/176

Abstract: A video decoding method includes: obtaining two or more base motion vectors from an adjacent block of a current block; obtaining correction information for correcting the two or more base motion vectors; determining two or more affine motion vectors by correcting the two or more base motion vectors according to the correction information; obtaining a plurality of affine parameters of the current block according to the two or more affine motion vectors; and predicting the current block according to the plurality of affine parameters.

公开(公告)号：US11509900B2

公开(公告)日：2022-11-22

申请号：US17184009

申请日：2021-02-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Minsoo Park ,  Gahyun Ryu ,  Minwoo Park ,  Seungsoo Jeong ,  Kiho Choi ,  Narae Choi ,  Woongil Choi ,  Anish Tamse ,  Yinji Piao

IPC: H04N19/96 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

Abstract: Provided are a method and apparatus, which, during video encoding and decoding processes, obtain chroma intra prediction mode information about a current chroma block, when the chroma intra prediction mode information indicates a direct mode (DM), determine a luma block including a luma sample corresponding to a chroma sample at a lower-right location with respect to a center of the current chroma block, determine a chroma intra prediction mode of the current chroma block based on an intra prediction mode of the determined luma block, and perform intra prediction on the current chroma block, based on the determined chroma intra prediction mode.

公开(公告)号：US20220303551A1

公开(公告)日：2022-09-22

申请号：US17835553

申请日：2022-06-08

Applicant: SAMSUNG ELECTRONICS CO.,LTD.

Inventor： Narae CHOI ,  Chanyul Kim ,  Minsoo Park ,  Minwoo Park ,  Seungsoo Jeong ,  Kiho Choi ,  Woongil Choi ,  Anish Tamse ,  Yinji Piao

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/593

Abstract: Provided are a video encoding or decoding method and apparatus, which, during video encoding and decoding processes, determine whether an intra prediction mode of the current block is a DC mode, when the intra prediction mode of the current block is the DC mode, in a case where lengths of a height and a width of the current block are the same, determine an average of upper reference samples of the current block and left reference samples of the current block, as a DC value, and in a case where the lengths of the height and the width of the current block are different from each other, determine a weighted average value, which is determined by determining an average of the upper reference samples of the current block as an upper DC value, determine an average of the left reference samples of the current block as a left DC value, and combining the upper value and the left DC value with a predetermined weight, as a DC value, and perform intra prediction on the current block, based on the DC value.