公开(公告)号：US20250030842A1

公开(公告)日：2025-01-23

申请号：US18907838

申请日：2024-10-07

Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

Inventor： Junyan HUO ,  Yanzhuo MA ,  Fuzheng YANG ,  Danni WANG ,  Hongqing DU ,  Ming LI

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/42 ,  H04N19/50

Abstract: Disclosed are a coding method, a decoding method, and a decoding device. The decoding method includes: determining a reference sample value of a first color component of the current block; according to the reference sample value of the first color component of the current block, determining a weighting coefficient by means of a neural network model, wherein an input for the neural network model comprises the reference sample value of the first color component of the current block; according to the weighting coefficient and a reference sample value of a second color component of the current block, determining a predicted block of the second color component of the current block; and according to the predicted block, determining a reconstructed value of a sampling point of the second color component of the current block.

公开(公告)号：US20250024049A1

公开(公告)日：2025-01-16

申请号：US18900054

申请日：2024-09-27

Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

Inventor： Shuai WAN ,  Junyan HUO ,  Yanzhuo MA ,  Wei ZHANG

IPC: H04N19/186 ,  H04N19/176 ,  H04N19/59

Abstract: A method for picture prediction, an encoder, a decoder, and a storage medium are provided. The method includes the following. At least one colour component of a current block in a picture is determined. The at least one colour component of the current block is pre-processed to obtain at least one pre-processed colour component. A prediction model is constructed according to the at least one pre-processed colour component, where the prediction model is used to perform cross-component prediction on the at least one colour component of the current block.

公开(公告)号：US20240267515A1

公开(公告)日：2024-08-08

申请号：US18635686

申请日：2024-04-15

Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

Inventor： Yanzhuo MA ,  Shuai WAN ,  Junyan HUO ,  Wei ZHANG ,  Mingze WANG

IPC: H04N19/117 ,  G06N3/04 ,  H04N19/82 ,  H04N19/85

CPC classification number: H04N19/117 ,  G06N3/04 ,  H04N19/82 ,  H04N19/85

Abstract: Provided in implementations of the present application are a filtering method and apparatus, and a computer storage medium; the method comprises: acquiring pixel information to be filtered; determining edge information; and inputting the sample information to be filtered and the edge information into a neural network-based filter so as to output filtered pixels, the filter being obtained by an online filtering part combined with an offline filtering part.

公开(公告)号：US20240223805A1

公开(公告)日：2024-07-04

申请号：US18608229

申请日：2024-03-18

Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

Inventor： Junyan HUO ,  Yanzhuo MA ,  Shuai WAN ,  Fuzheng YANG ,  Jinkun GUO

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

CPC classification number: H04N19/593 ,  H04N19/11 ,  H04N19/136 ,  H04N19/176

Abstract: A method for intra prediction and a decoder are provided. The method includes the following operations. At least one neighbouring block of a current block is determined. A first intra prediction mode index of the at least one neighbouring block is determined. An intra prediction mode list is constructed based on the first intra prediction mode index of the at least one neighbouring block. A first intra prediction mode index of the current block is determined based on the intra prediction mode list. A width to height ratio of the current block is obtained, and the first intra prediction mode index is mapped to a second intra prediction mode index according to the width to height ratio. Prediction is performed for the current block based on a target intra prediction mode, and a prediction block is obtained.

公开(公告)号：US20230239470A1

公开(公告)日：2023-07-27

申请号：US18127616

申请日：2023-03-28

Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

Inventor： Yanzhuo MA ,  Ruipeng QIU ,  Junyan HUO ,  Shuai WAN ,  Fuzheng YANG

IPC: H04N19/117 ,  H04N19/17 ,  H04N19/184 ,  G06V10/82

CPC classification number: H04N19/117 ,  H04N19/17 ,  H04N19/184 ,  G06V10/82

Abstract: A video encoding method is applicable to an encoder, and comprises: determining side information having a correlation with a current coding unit; filtering first relevant information to be coded of the current coding unit by using a preset network model and the side information, to obtain second relevant information to be coded; and inputting the second relevant information to be coded into a subsequent coding module for encoding, to obtain a bitstream.

公开(公告)号：US20230058703A1

公开(公告)日：2023-02-23

申请号：US17964458

申请日：2022-10-12

Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

Inventor： Wei ZHANG ,  Junyan HUO ,  Yanzhuo MA

IPC: H04N19/70 ,  H04N19/119 ,  H04N19/174 ,  H04N19/30 ,  H04N19/96

Abstract: A point cloud encoding and decoding method, an encoder, and a decoder are provided. The encoder determines a processing order of point cloud data during point cloud encoding. The encoder determines a coordinate-axis-order index corresponding to the processing order. The encoder encodes the coordinate-axis-order index and signals encoded bits into a bitstream. The encoder processes the point cloud data according to the processing order, to obtain point cloud data to-be-encoded. The encoder encodes the point cloud data to-be-encoded and signals encoded bits into the bitstream. The decoder decodes a bitstream to obtain a coordinate-axis-order index, determines a processing order of point cloud data during point cloud decoding according to the coordinate-axis-order index, decodes the bitstream to obtain recovered data of the point cloud data, and determines a position of coordinate data of the point cloud data in a storage unit of the recovered data according to the processing order.

公开(公告)号：US20230053024A1

公开(公告)日：2023-02-16

申请号：US17968883

申请日：2022-10-19

Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP.,LTD.

Inventor： Junyan HUO ,  Shuai WAN ,  Yanzhuo MA ,  Haixin WANG ,  Fuzheng YANG

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

Abstract: A method for decoding a picture, a method for encoding a picture, an encoder, and a decoder are provided. The method for encoding a picture includes (i) determining a width and a height of a coding block in the picture; (ii) if the width and the height are equal to N, where N is a positive integer power of 2, determining a matrix-based intra prediction (MIP) size identifier indicating that an MIP prediction size equal to N; (iii) deriving a group of reference samples of the coding block; and (iv) deriving an MIP prediction of the coding block based on the group of reference samples and an MIP matrix corresponding to the MIP size identifier.

公开(公告)号：US20230045687A1

公开(公告)日：2023-02-09

申请号：US17955264

申请日：2022-09-28

Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

Inventor： Yanzhuo MA ,  Junyan HUO ,  Shuai WAN ,  Fuzheng YANG ,  Qihong RAN

IPC: H04N19/52 ,  H04N19/109 ,  H04N19/159 ,  H04N19/176 ,  H04N19/105 ,  H04N19/119 ,  H04N19/139 ,  H04N19/70 ,  H04N19/167 ,  H04N19/56

Abstract: Embodiments of the present application provide an inter prediction method, an encoder, a decoder, and a storage medium. The method comprises: determining a prediction mode parameter of a current block; when the prediction mode parameter indicates that the current block determines an inter prediction value by using a geometrical partition mode (GPM), constructing a merge candidate list of the current block; constructing a GPM motion information candidate list according to first motion information in the merge candidate list of the current block; and determining an inter prediction value of the current block according to the GPM motion information candidate list.

公开(公告)号：US20230007295A1

公开(公告)日：2023-01-05

申请号：US17945261

申请日：2022-09-15

Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

Inventor： Junyan HUO ,  Yanzhuo MA ,  Shuai WAN ,  Fuzheng YANG ,  Ze GUO

IPC: H04N19/517 ,  H04N19/137 ,  H04N19/176 ,  H04N19/182

Abstract: Processing methods for motion compensation, an encoder, and a decoder are provided. The method includes the following. Determine a search position constellation with a point pointed by an initial motion vector as a center point, where the search position constellation includes N directions, search for at least one search point by using at least one type of step lengths in the directions, where the at least one search point at least includes at least one search point in diagonal directions. Search for at least one search position from the search position constellation based on a preset range coverage rule, where the preset range coverage rule is to arrange search points in the directions for search. Obtain a new motion vector according to the at least one search position, and perform motion compensation based on the new motion vector to obtain a prediction value of a coding unit (CU).

公开(公告)号：US20230007279A1

公开(公告)日：2023-01-05

申请号：US17942679

申请日：2022-09-12

Applicant: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

Inventor： Shuai WAN ,  Yanzhuo MA ,  Junyan HUO ,  Haixin WANG ,  Fuzheng YANG

IPC: H04N19/186 ,  H04N19/105 ,  H04N19/132 ,  H04N19/147 ,  H04N19/176 ,  H04N19/593 ,  H04N19/70 ,  H04N19/80

Abstract: A method for colour component prediction, applied to an encoder and includes: determining a neighbouring reference sample set of a current block, wherein the neighbouring reference sample set comprises at least one reference sample; determining a preset parameter value corresponding to the current block, including: determining a bitdepth value corresponding to a to-be-predicted colour component of the current block; and performing a shift on 1 by the bitdepth value minus 1 to obtain the preset parameter value. The method further includes: determining an input sample matrix by means of a first preset calculation model based on the neighbouring reference sample set and the preset parameter value; and performing colour component prediction on the current block according to the input sample matrix to obtain a prediction block of the current block.