公开(公告)号：US20240056605A1

公开(公告)日：2024-02-15

申请号：US18493359

申请日：2023-10-24

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yinji PIAO ,  Elena ALSHINA ,  Alexander ALSHIN ,  Anish TAMSE

IPC: H04N19/615 ,  H04N19/105 ,  H04N19/109 ,  H04N19/117 ,  H04N19/176 ,  H04N19/423

CPC classification number: H04N19/615 ,  H04N19/105 ,  H04N19/109 ,  H04N19/117 ,  H04N19/176 ,  H04N19/423

Abstract: Provided is a video decoding method including: determining an inter prediction mode of a current block when the current block is inter-predicted; determining at least one reference sample location to be referred to by the current block, based on the inter prediction mode of the current block; determining filter information to be applied to at least one reconstructed reference sample corresponding to the at least one reference sample location, based on the inter prediction mode of the current block; performing filtering on the at least one reconstructed reference sample, based on the filter information; and decoding the current block by using prediction samples generated via the filtering.

公开(公告)号：US20230362370A1

公开(公告)日：2023-11-09

申请号：US18353962

申请日：2023-07-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seungsoo JEONG ,  Anish TAMSE ,  Minsoo PARK ,  Minwoo PARK

IPC: H04N19/119 ,  H04N19/105 ,  H04N19/176 ,  H04N19/52 ,  H04N19/91

CPC classification number: H04N19/119 ,  H04N19/105 ,  H04N19/176 ,  H04N19/52 ,  H04N19/91

Abstract: An image decoding method including: obtaining, from a bitstream, information related to a triangle prediction mode for a current block; splitting the current block into two triangular partitions, according to the information related to a triangle prediction mode; generating a merge list for a triangle prediction mode, according to a merge list generation method in a regular merge mode; selecting a motion vector for the two triangular partitions according to information indicating the motion vector from among motion vectors included in the merge list; obtaining, from a reference image, prediction blocks corresponding to the two triangular partitions, based on the motion vector; and reconstructing the current block, based on a final prediction block.

公开(公告)号：US20230171422A1

公开(公告)日：2023-06-01

申请号：US17981567

申请日：2022-11-07

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Anish TAMSE ,  Minwoo Park ,  Minsoo Park

IPC: H04N19/513 ,  H04N19/176

CPC classification number: H04N19/513 ,  H04N19/176

Abstract: Provided are a video decoding method and apparatus for, in a video encoding and decoding procedure, when a merge candidate list of a current block is configured, determining whether the number of merge candidates included in the merge candidate list is greater than 1 and is smaller than a predetermined maximum merge candidate number, when the number of the merge candidates included in the merge candidate list is greater than 1 and is smaller than the predetermined maximum merge candidate number, determining an additional merge candidate by using a first merge candidate and a second merge candidate of the merge candidate list of the current block, configuring the merge candidate list by adding the determined additional merge candidate to the merge candidate list, and performing prediction on the current block, based on the merge candidate list.

公开(公告)号：US20230146358A1

公开(公告)日：2023-05-11

申请号：US18148937

申请日：2022-12-30

Applicant: Samsung Electronics Co., Ltd.

Inventor： Anish TAMSE ,  Minwoo PARK

IPC: H04N19/137 ,  H04N19/105 ,  H04N19/13 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/137 ,  H04N19/105 ,  H04N19/13 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

Abstract: Provided are a video decoding method and apparatus, in which, during video encoding and decoding processes: in which a first bin of a sub-block merge index indicating a candidate motion vector of a sub-block merge mode is obtained, the first bin being arithmetic-encoded using a context model, a second arithmetic-encoded in a bypass mode is obtained based on a first value obtained by arithmetic-decoding the first bin by using the context model, a second value is obtained by arithmetic-decoding the second bin in the bypass mode, and prediction on a current block is performed in the sub-block merge mode, based on the first value and the second value.

公开(公告)号：US20230070926A1

公开(公告)日：2023-03-09

申请号：US17986052

申请日：2022-11-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Woongil CHOI ,  Gahyun RYU ,  Minsoo PARK ,  Minwoo PARK ,  Yumi SOHN ,  Seungsoo JEONG ,  Narae CHOI ,  Anish TAMSE

IPC: H04N19/513 ,  H04N19/109 ,  H04N19/117 ,  H04N19/119 ,  H04N19/139 ,  H04N19/172 ,  H04N19/176

Abstract: Provided is a video decoding method including: determining whether or not to perform history-based motion vector prediction for inter-prediction of a current block, based on a location of the current block in a tile including a plurality of largest coding units; when it is determined to perform the history-based motion vector prediction on the current block, generating a motion information candidate list including history-based motion vector candidates; determining a motion vector of the current block by using a motion vector predictor determined from the motion information candidate list; and reconstructing the current block by using the motion vector of the current block, wherein, when a motion constraint is applied to a first tile group, when a reference picture of a first tile from among tiles included in the first tile group is a second picture, a motion vector of the first tile is not permitted to indicate a block of the second picture, the block being located outside a second tile group, and when the motion constraint is not applied to the first tile group, the motion vector of the first tile is permitted to indicate the block of the second picture, the block being located outside the second tile group.

公开(公告)号：US20230054879A1

公开(公告)日：2023-02-23

申请号：US17981040

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.

公开(公告)号：US20220086444A1

公开(公告)日：2022-03-17

申请号：US17532435

申请日：2021-11-22

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04N19/129 ,  H04N19/96 ,  H04N19/46 ,  H04N19/18 ,  H04N19/176

Abstract: An image encoding/decoding method and an apparatus thereof are provided. The decoding method includes: determining a coding unit by splitting an image; determining a transform unit in the coding unit; determining whether to decode residual data of the transform unit according to a transform skip mode; obtaining a significant subgroup flag about a subgroup in the transform unit; based on the significant subgroup flag indicating that the subgroup includes at least one non-zero significant coefficient and scanning information about coefficients of the subgroup, obtaining a first bin about a significant coefficient flag, a sign flag, a first flag, and a parity flag of a coefficient of a scan position; obtaining the residual data including a coefficient in the subgroup based on the base level and a remainder of an absolute value excluding the base level; and obtaining a reconstruction block of the coding unit, based on the residual data.

公开(公告)号：US20220078409A1

公开(公告)日：2022-03-10

申请号：US17526317

申请日：2021-11-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/117 ,  H04N19/82 ,  H04N19/176

Abstract: An image decoding method includes: comparing a size of a current image including a current block with a size of a reference image; selecting, in the reference image, reference samples corresponding to current samples in the current block according to a motion vector of the current block; and reconstructing the current block based on the reference samples, wherein, when the size of the reference image is greater than the size of the current image, the reference samples are spaced apart from one another in the reference image by an interval corresponding to a result of the size comparison.

公开(公告)号：US20220007025A1

公开(公告)日：2022-01-06

申请号：US17475815

申请日：2021-09-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Anish TAMSE ,  Minwoo PARK ,  Woongil CHOI

IPC: H04N19/13

Abstract: A video decoding method includes obtaining an initial value of a context model for a syntax element, determining, based on the initial value, slope size information, slope sign information, offset size information, and offset sign information of the context model, determining an initial probability of the context model based on the slope size information, the slope sign information, the offset size information, the offset sign information, and a quantization parameter, obtaining at least one bin of a symbol indicating the syntax element by performing context adaptive binary arithmetic coding (CABAC) decoding based on the initial probability of the context model, and reconstructing a video based on the at least one bin.

公开(公告)号：US20210392330A1

公开(公告)日：2021-12-16

申请号：US17285763

申请日：2019-10-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04N19/13 ,  H04N19/91 ,  H04N19/30 ,  H04N19/174

Abstract: Provided is an entropy decoding method including: determining a plurality of scaling factors for updating an occurrence probability of a certain binary value for a current encoding symbol; performing arithmetic coding on a binary value of the current encoding symbol, based on the occurrence probability of the certain binary value; and updating the occurrence probability of the certain binary value by using at least one scaling factor of the plurality of scaling factors, according to the binary value of the current encoding symbol.