公开(公告)号：US20220038696A1

公开(公告)日：2022-02-03

申请号：US17480816

申请日：2021-09-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04N19/119 ,  H04N19/176

Abstract: According to an embodiment of the disclosure, a video decoding method includes obtaining, from a bitstream, information indicating a first difference between a maximum size of a coding unit of which a width and a height have a ratio of 1:4 and a size of a largest coding unit, determining the maximum size of the coding unit of which the width and the height have a ratio of 1:4 by using the size of the largest coding unit and the first difference, determining a minimum size of the coding unit of which the width and the height have a ratio of 1:4 based on a minimum size of a coding unit, determining whether it is possible to generate a coding unit of which a width and a height have a ratio of 1:4 by splitting a first coding unit based on the maximum size and the minimum size of the coding unit of which the width and the height have a ratio of 1:4, and determining a second coding unit including the coding unit of which the width and the height have a ratio of 1:4, from the first coding unit, and decoding the second coding unit.

公开(公告)号：US20210344954A1

公开(公告)日：2021-11-04

申请号：US17375769

申请日：2021-07-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04N19/593 ,  H04N19/11 ,  H04N19/176 ,  H04N19/82 ,  H04N19/132 ,  H04N19/136

Abstract: A video decoding method includes predicting a current block according to an intra prediction mode of the current block, determining whether to apply position dependent intra prediction filtering to the current block according to the intra prediction mode of the current block, when the position dependent intra prediction filtering is applied to the current block, determining at least one of an upper reference sample, a left reference sample, an upper weight, and a left weight for the position dependent intra prediction filtering of a current sample of the current block according to the intra prediction mode of the current block, and applying the position dependent intra prediction filtering to the current sample of the current block according to at least one of the upper reference sample, the left reference sample, the upper weight, and the left weight.

公开(公告)号：US20210274184A1

公开(公告)日：2021-09-02

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

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：US20210051343A1

公开(公告)日：2021-02-18

申请号：US16979993

申请日：2019-03-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yinji PIAO

IPC: H04N19/61 ,  H04N19/103 ,  H04N19/136 ,  H04N19/176

Abstract: Provided is a video decoding method including determining encoding modes applicable to a current picture according to a temporal layer depth of the current picture, generating a prediction block and a transform block for blocks included in the current picture according to the encoding modes applicable to the current picture, and reconstructing the current picture by using the prediction block and the transform block.

公开(公告)号：US20200374562A1

公开(公告)日：2020-11-26

申请号：US16959726

申请日：2019-01-07

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

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