公开(公告)号：US11736682B2

公开(公告)日：2023-08-22

申请号：US17259455

申请日：2019-07-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04N19/176 ,  H04N19/105 ,  H04N19/186 ,  H04N19/593 ,  H04N19/119

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：US20230055604A1

公开(公告)日：2023-02-23

申请号：US17975001

申请日：2022-10-27

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：US11431975B2

公开(公告)日：2022-08-30

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: A video decoding method includes obtaining information indicating a first difference between a maximum size of a coding unit having a 1:4 ratio and a size of a largest coding unit, determining the maximum size of the coding unit of having the 1:4 ratio by using the size of the largest coding unit and the first difference, determining a minimum size of the coding unit having the 1:4 ratio based on a minimum size of a coding unit, determining whether a coding having the 1:4 ratio may be generated by splitting a first coding unit based on the maximum size and the minimum size of the coding unit having the 1:4 ratio, and determining a second coding unit including the coding unit having the 1:4 ratio, from the first coding unit, and decoding the second coding unit.

公开(公告)号：US20220232210A1

公开(公告)日：2022-07-21

申请号：US17712714

申请日：2022-04-04

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04N19/11 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

Abstract: Provided are video encoding/decoding methods and apparatuses for determining an intra prediction mode of a current block, based on a width and height of the current block. When the current block has a square shape in which the width and height are equal, the intra prediction mode of the current block is determined from among first intra prediction mode candidates including a plurality of predetermined intra prediction directions, and when the current block has a non-square shape in which the width and height are not equal, the intra prediction mode of the current block is determined from among second intra prediction mode candidates configured based on the non-square shape.

公开(公告)号：US20220217409A1

公开(公告)日：2022-07-07

申请号：US17689641

申请日：2022-03-08

Applicant: Samsung Electronics Co., Ltd.

Inventor： Minwoo Park ,  Minsoo Park ,  Kiho Choi ,  Yinji Piao ,  Anish Tamse

IPC: H04N19/70 ,  H04N19/52 ,  H04N19/159 ,  H04N19/593 ,  H04N19/124 ,  H04N19/60

Abstract: An image decoding method includes: obtaining, from a bitstream, first coding tool enable flag information of a first coding tool, indicating whether or not the first coding tool is applicable to an image sequence; obtaining, from the bitstream, second coding tool enable flag information of at least one second coding tool related to the first coding tool, based on the obtained first coding tool enable flag information; identifying at least one coding tool of the first coding tool and the second coding tool that is applicable to the image sequence included in the bitstream, based on at least one of the first coding tool enable flag information and the second coding tool enable flag information; and performing decoding on the image sequence based on the identified at least one coding tool.

公开(公告)号：US20220078422A1

公开(公告)日：2022-03-10

申请号：US17527770

申请日：2021-11-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04N19/119 ,  H04N19/96 ,  H04N19/46 ,  H04N19/186 ,  H04N19/176

Abstract: An image encoding and decoding method and apparatus are provided. The image decoding method includes obtaining a difference quantization parameter for a current coding unit from a bitstream, based on an area of a predefined difference quantization parameter signaling unit; obtaining a quantization parameter for the current coding unit by using a predicted quantization parameter for the current coding unit and the difference quantization parameter for the current coding unit; obtaining at least one inverse-quantized coefficient by performing inverse-quantization on at least one coefficient obtained based on residual information of the current coding unit included in the bitstream, based on the quantization parameter for the current coding unit; obtaining a residual block of the current coding unit, based on the inverse-quantized coefficient; and obtaining a reconstructed block of the current coding unit, based on the residual block of the current coding unit.

公开(公告)号：US11212556B2

公开(公告)日：2021-12-28

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.