-
公开(公告)号：US12225200B2
公开(公告)日：2025-02-11
申请号：US18532038
申请日：2023-12-07
Inventor： Junyan Huo , Yanzhuo Ma , Wei Zhang
IPC: H04N19/132 , G06F5/01 , G06F17/16 , H04N19/159 , H04N19/176 , H04N19/186
Abstract: A method for colour component prediction, an encoder, a decoder and a storage medium are provided. The method includes that: prediction parameters of a current block are determined, the prediction parameters including a prediction mode parameter and a size parameter of the current block; when the prediction mode parameter indicates that a Matrix-based Intra Prediction (MIP) mode is adopted to determine an intra prediction value of the current block, an MIP weight matrix of the current block, a shift factor of the current block and an MIP input sample matrix of the current block are determined; and the intra prediction value of the current block is determined according to the MIP weight matrix, the shift factor and the MIP input sample matrix.
-
公开(公告)号：US12192479B2
公开(公告)日：2025-01-07
申请号：US17382932
申请日：2021-07-22
Inventor： Shuai Wan , Junyan Huo , Yanzhuo Ma , Fuzheng Yang , Jinkun Guo , Haixin Wang
IPC: H04N19/159 , G06F5/01 , H04N19/172 , H04N19/184
Abstract: Picture coding and decoding methods, an encoder, a decoder and a storage medium are provided. The encoder, before performing coding processing according to a matrix-based intra prediction (MIP) mode, sets initial right shift parameters corresponding to different sizes and different MIP mode numbers as an uniform offset parameter, the offset parameter indicating a number of right shifting bits of a predicted value, and when performing coding processing according to the MIP mode, performs coding processing according to the offset parameter. The decoder, before performing decoding processing according to an MIP mode, sets initial right shift parameters corresponding to different sizes and different MIP mode numbers as an uniform offset parameter, the offset parameter indicating a number of right shifting bits of a predicted value, and when performing decoding processing according to the MIP mode, performs decoding processing according to the offset parameter.
-
公开(公告)号：US12047557B2
公开(公告)日：2024-07-23
申请号：US17557546
申请日：2021-12-21
Inventor： Junyan Huo , Yanzhuo Ma
IPC: H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186
CPC classification number: H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186
Abstract: Disclosed are a colour component prediction method, encoder, decoder, and storage medium. When CCLM is used for a current block to determine its intra prediction value, the encoder determines multiple groups of corresponding CCLM parameters using multiple groups of reference samples of current block, determines a target CCLM parameter from multiple groups of CCLM parameters; sets a CCLM index value indicating to use the target CCLM parameter and signals same in bitstream; and determines intra prediction value of current block according to the target CCLM parameter. The decoder parses bitstream to determine a prediction mode parameter of current block, parses bitstream to determine a CCLM index value of current block when prediction mode parameter indicates intra prediction value of current block is determined using CCLM; determines target CCLM parameter according to the CCLM index value, and determines intra prediction value of current block according to the target CCLM parameter.
-
公开(公告)号：US11973936B2
公开(公告)日：2024-04-30
申请号：US17723179
申请日：2022-04-18
Inventor： Junyan Huo , Yanzhuo Ma , Shuai Wan , Fuzheng Yang , Xinwei Li , Qihong Ran
IPC: H04N19/105 , H04N19/176 , H04N19/186
CPC classification number: H04N19/105 , H04N19/176 , H04N19/186
Abstract: Colour component prediction method is provided, which includes that: first reference sample set corresponding to colour component to be predicted of coding block in video image is acquired; when available sample number in first reference sample set is less than preset number, preset component value is taken as predicted value corresponding to the colour component to be predicted; when available sample number in first reference sample set is not less than preset number, first reference sample set is screened to obtain second reference sample set; when available sample number in second reference sample set is equal to preset number, model parameter is determined through second reference sample set, and prediction model corresponding to colour component to be predicted is obtained based on model parameter, prediction model is used for prediction processing of colour component to be predicted to obtain predicted value corresponding to colour component to be predicted.
-
公开(公告)号：US11930223B2
公开(公告)日：2024-03-12
申请号：US17967980
申请日：2022-10-18
Inventor： Yanzhuo Ma , Junyan Huo , Qiang Gao , Fuzheng Yang , Shuai Wan
IPC: H04N19/96 , H04N19/132 , H04N19/167 , H04N19/196 , H04N19/44
CPC classification number: H04N19/96 , H04N19/132 , H04N19/167 , H04N19/196 , H04N19/44
Abstract: An image decoding method, a decoder and a storage medium are provided. The method includes: receiving code stream data, and parsing the code stream data to obtain a coding tree unit corresponding to the code stream data; parsing an i-th node of i-th layer corresponding to the coding tree unit to obtain i-th state parameter and i-th flag parameter corresponding to the i-th node; performing detection processing on the i-th node according to the i-th state parameter and the i-th flag parameter to obtain an i-th detection result; acquiring a (i+1)th node of a (i+1)th layer corresponding to the coding tree unit; continuing to perform detection processing on the (i+1)th node, and traversing all the nodes corresponding to the coding tree unit until all the coding unit data corresponding to the coding tree unit is obtained; and generating a decoded image corresponding to the code stream data.
-
Patent Agency Ranking
公开(公告)号：US11902589B2
公开(公告)日：2024-02-13
申请号：US17964458
申请日：2022-10-12
Inventor： Wei Zhang , Junyan Huo , Yanzhuo Ma
IPC: H04N19/70 , H04N19/119 , H04N19/174 , H04N19/30 , H04N19/96 , H04N19/60
CPC classification number: H04N19/70 , H04N19/119 , H04N19/174 , H04N19/30 , H04N19/96 , H04N19/60
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：US11876958B2
公开(公告)日：2024-01-16
申请号：US17658787
申请日：2022-04-11
Inventor： Junyan Huo , Shuai Wan
IPC: H04N19/105 , H04N19/117 , H04N19/132 , H04N19/176 , H04N19/82
CPC classification number: H04N19/105 , H04N19/117 , H04N19/132 , H04N19/176 , H04N19/82
Abstract: Provided are a video picture component prediction method and apparatus, and a computer storage medium. The method may comprise: acquiring a reference value set of a first picture component of a current block; determining, from the reference value set of the first picture component, multiple first picture component reference values; respectively carrying out first filtering processing on a sample value of a sample corresponding to each of the multiple first picture component reference values to obtain multiple filtered first picture reference sample values; determining reference values, corresponding to the multiple filtered first picture reference sample values, of a picture component to be predicted; according to the multiple filtered first picture reference sample values and the reference values of the picture component to be predicted, determining a parameter of a component linear model; according to the component linear model, carrying out mapping processing on a reconstruction value of the first picture component of the current block to obtain a mapping value; and according to the mapping value, determining a prediction value of the picture component to be predicted of the current block.
-
公开(公告)号：US11863777B2
公开(公告)日：2024-01-02
申请号：US17660970
申请日：2022-04-27
Inventor： Junyan Huo , Yanzhuo Ma , Shuai Wan , Fuzheng Yang , Qihong Ran
IPC: H04N19/105 , H04N19/159 , H04N19/44 , H04N19/132 , H04N19/176
CPC classification number: H04N19/44 , H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176
Abstract: A prediction decoding method, a prediction decoding apparatus, and a non-transitory computer storage medium are provided. The method includes the following. First multiple neighbouring reference samples of a coding block are determined, where the first multiple neighbouring reference samples include reference samples in a reference row or a reference column neighbouring the coding block. Positions corresponding to K reference samples are determined from a starting position of the reference row or the reference column, where K is a positive integer. Second multiple neighbouring reference samples are determined according to the determined positions corresponding to the K reference samples, where the second multiple neighbouring reference samples include neighbouring reference samples among the first multiple neighbouring reference samples. Prediction decoding is performed on the coding block according to the second multiple neighbouring reference samples.
-
公开(公告)号：US11863776B2
公开(公告)日：2024-01-02
申请号：US17660917
申请日：2022-04-27
Inventor： Junyan Huo , Yanzhuo Ma , Shuai Wan , Fuzheng Yang , Qihong Ran
IPC: H04N19/105 , H04N19/159 , H04N19/44 , H04N19/132 , H04N19/176
CPC classification number: H04N19/44 , H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176
Abstract: A prediction decoding method, a prediction decoding apparatus, and a non-transitory computer storage medium are provided. The method includes the following. First multiple neighbouring reference samples of a coding block are determined, where the first multiple neighbouring reference samples include reference samples in a reference row or a reference column neighbouring the coding block. Positions corresponding to K reference samples are determined from a starting position of the reference row or the reference column, where K is a positive integer. Second multiple neighbouring reference samples are determined according to the determined positions corresponding to the K reference samples, where the second multiple neighbouring reference samples include neighbouring reference samples among the first multiple neighbouring reference samples. Prediction decoding is performed on the coding block according to the second multiple neighbouring reference samples.
-
公开(公告)号：US11854207B2
公开(公告)日：2023-12-26
申请号：US17646529
申请日：2021-12-30
Inventor： Wei Zhang , Fuzheng Yang , Shuai Wan , Yanzhuo Ma , Junyan Huo , Sujun Zhang , Zexing Sun
IPC: G06T7/12
CPC classification number: G06T7/12 , G06T2207/10028
Abstract: The implementation of the present disclosure provides a point cloud partitioning method and device, and a computer-readable storage medium, including: when performing stripe division along the longest side, adjusting an initial partitioning position or determining the stripe division length according to the size of a preset block, to obtain a stripe division position, wherein, the length of the first n−1 stripes along the longest side is an integer multiple of the side length of the preset block, n is the number of divided stripes, and n is a positive integer greater than or equal to 2.
-
-
-
-
-
-
-
-
-
Search Results
120
records
(took 0.031 seconds)
