公开(公告)号：US20210152844A1

公开(公告)日：2021-05-20

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: H04N19/52 ,  H04N19/176 ,  H04N19/119

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：US20210127134A1

公开(公告)日：2021-04-29

申请号：US17054347

申请日：2019-05-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seungsoo JEONG ,  Chanyul KIM ,  Minsoo PARK ,  Minwoo PARK ,  Kiho CHOI ,  Narae CHOI ,  Woongil CHOI ,  Anish TAMSE ,  Yinji PIAO

IPC: H04N19/577 ,  H04N19/44 ,  H04N19/105 ,  H04N19/119

Abstract: A video decoding method includes determining, based on an area of a current block, whether a multi-prediction combination mode for predicting the current block by combining prediction results obtained according to a plurality of prediction modes is applied to the current block, when the multi-prediction combination mode is applied to the current block, determining the plurality of prediction modes to be applied to the current block, generating a plurality of prediction blocks of the current block, according to the plurality of prediction modes, and determining a combined prediction block of the current block, by combining the plurality of prediction blocks according to respective weights.

公开(公告)号：US20210105465A1

公开(公告)日：2021-04-08

申请号：US17071600

申请日：2020-10-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Narae CHOI ,  Minwoo PARK ,  Chanyul KIM ,  Minsoo PARK ,  Yumi SOHN ,  Seungsoo JEONG ,  Kiho CHOI ,  Woongil CHOI ,  Anish TAMSE ,  Yinji PIAO

IPC: H04N19/11 ,  H04N19/176

Abstract: Provided are a video decoding method and apparatus and a video encoding method and apparatus which determine whether to use a Most Probable Mode (MPM) list, based on encoding information of a current block, obtain, from a bitstream, intra prediction mode index information indicating one of candidate intra prediction modes included in the MPM list, and determine an intra prediction mode of the current block by using the obtained intra prediction mode index information.

公开(公告)号：US20240048711A1

公开(公告)日：2024-02-08

申请号：US18232209

申请日：2023-08-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yinji PIAO ,  Kyungah KIM ,  Minsoo PARK ,  Minwoo PARK ,  Kwangpyo CHOI

IPC: H04N19/132 ,  H04N19/186 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/132 ,  H04N19/186 ,  H04N19/176 ,  H04N19/46

Abstract: An artificial intelligence (AI)-based video decoding method comprises obtaining, from a bitstream, a joint chroma residual sample of a current block, Cb component prediction information of the current block, and Cr component prediction information of the current block; determining a prediction sample of the Cb component of the current block based on at least the Cb component prediction information; determining a prediction sample of the Cr component of the current block based on at least the Cr component prediction information; and reconstructing the current block by obtaining a reconstructed sample of the Cb component of the current block and a reconstructed sample of the Cr component of the current block from an output of a neural network by inputting the joint chroma residual sample, the prediction sample of the Cb component, and the prediction sample of the Cr component to the neural network.

公开(公告)号：US20230396789A1

公开(公告)日：2023-12-07

申请号：US18447754

申请日：2023-08-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yinji PIAO ,  Anish Tamse

IPC: H04N19/44 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/44 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

Abstract: A video decoding method includes, when inter prediction of a current block is performed in an affine merge mode, generating an affine merge candidate list including a control point-based affine merge candidate corresponding to control point motion vectors determined by using motion vectors of neighboring blocks included in a block group of representative neighboring blocks according to corners of the current block, determining an affine motion vector of the current block by using control point motion vectors corresponding to a merge candidate selected from the affine merge candidate list, and obtaining prediction samples of the current block by using the affine motion vector of the current block, wherein when a right block of the current block is available, a representative neighboring block adjacent to a lower right corner of the current block is a block whose available motion information is obtained from among a neighboring block adjacent to the lower right corner of the current block and a right boundary of the current block and a neighboring block diagonally adjacent to the lower right corner of the current block.

公开(公告)号：US20230362359A1

公开(公告)日：2023-11-09

申请号：US18354888

申请日：2023-07-19

Applicant: SAMSUNG ELECTRONICS CO., LTD

Inventor： Narae CHOI ,  Minsoo PARK ,  Minwoo PARK ,  Seungsoo JEONG ,  Kiho CHOI ,  Woongil CHOI ,  Anish TAMSE ,  Yinji PIAO

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/186 ,  H04N19/593

CPC classification number: H04N19/105 ,  H04N19/176 ,  H04N19/186 ,  H04N19/593 ,  H04N19/119

Abstract: Provided are a video decoding method and apparatus which, during video encoding and decoding processes, determine whether a current block is in contact with an upper boundary of a largest coding unit including the current block, when it is determined that the current block is in contact with the upper boundary of the largest coding unit, determine an upper reference line of the current block as one reference line, when it is determined that the current block is not in contact with the upper boundary of the largest coding unit, determine the upper reference line of the current block based on N reference lines, and use the determined upper reference line.

公开(公告)号：US20230328251A1

公开(公告)日：2023-10-12

申请号：US18328481

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：US20230281458A1

公开(公告)日：2023-09-07

申请号：US18174976

申请日：2023-02-27

Applicant: Samsung Electronics Co., Ltd.

Inventor： Aviral AGRAWAL ,  Raj Narayana GADDE ,  Anubhav SINGH ,  Yinji PIAO ,  Minwoo PARK ,  Kwangpyo CHOI

IPC: G06N3/091 ,  G06T9/00

CPC classification number: G06N3/091 ,  G06T9/002

Abstract: A method and an electronic device for low-complexity in-loop filter inference using feature-augmented training are provided. The method includes combining spatial and spectral domain features, using spectral domain features for global feature extraction and signalling to the spatial stream during training, using a detachable spectral domain stream for differential complexity during training versus inference, and combining a unique set of losses resulting from multi-stream and multi-feature approaches to obtain an optimal output.

公开(公告)号：US20230232023A1

公开(公告)日：2023-07-20

申请号：US18160712

申请日：2023-01-27

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 ,  H04N19/119 ,  H04N19/122 ,  H04N19/176

CPC classification number: H04N19/186 ,  H04N19/119 ,  H04N19/122 ,  H04N19/176 ,  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：US20230072296A1

公开(公告)日：2023-03-09

申请号：US17980942

申请日：2022-11-04

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

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.