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公开(公告)号：US12137235B2
公开(公告)日：2024-11-05
申请号：US17482191
申请日：2021-09-22
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.
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公开(公告)号：US12113980B2
公开(公告)日：2024-10-08
申请号：US18353210
申请日：2023-07-17
Inventor： Junyan Huo , Xiaoyan Chai , Yanzhuo Ma , Fuzheng Yang
IPC: H04N19/176 , H04N19/126 , H04N19/186
CPC classification number: H04N19/126 , H04N19/176 , H04N19/186
Abstract: A video colour component prediction method and apparatus, and a computer storage medium are provided. The prediction method includes: obtaining a first colour component neighboring reference value and a first colour component reconstructed value corresponding to a current coding block, wherein the first colour component neighboring reference value represents a first colour component parameter corresponding to a neighboring reference sample of the current coding block, and the first colour component reconstructed value represents one or more reconstruction parameters of a first colour component corresponding to the current coding block; determining a weight coefficient corresponding to the neighboring reference sample; determining a scale factor according to the weight coefficient and the first colour component neighboring reference value; and obtaining a second colour component predicted value corresponding to the current coded block based on a linear model corresponding to the scale factor.
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公开(公告)号：US11917198B2
公开(公告)日：2024-02-27
申请号：US17950860
申请日：2022-09-22
Inventor： Shuai Wan , Zhecheng Wang , Fuzheng Yang , Yanzhuo Ma , Junyan Huo
IPC: H04N19/593 , H04N19/96
CPC classification number: H04N19/593
Abstract: A method and device for intra prediction are provided. The method includes: when determining that a current level obtained by partitioning an input point cloud is lower than a target level, obtaining occupation information of a first number of neighbouring nodes of a current node; extracting occupation information of a second number of neighbouring nodes from the occupation information of the first number of neighbouring nodes, the first number being greater than the second number, and the second number of neighbouring nodes being in an association relationship with a child node of the current node, and performing intra prediction on occupation information of the child node of the current node based on the occupation information of the second number of neighbouring nodes to obtain a first prediction result.
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公开(公告)号：US11910003B2
公开(公告)日：2024-02-20
申请号：US17945261
申请日：2022-09-15
Inventor： Junyan Huo , Yanzhuo Ma , Shuai Wan , Fuzheng Yang , Ze Guo
IPC: H04N19/137 , H04N19/176 , H04N19/182 , H04N19/517
CPC classification number: 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).
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公开(公告)号：US11882318B2
公开(公告)日：2024-01-23
申请号：US17967271
申请日：2022-10-17
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.
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Patent Agency Ranking
公开(公告)号：US11856153B2
公开(公告)日：2023-12-26
申请号：US17715318
申请日：2022-04-07
Inventor： Junyan Huo , Yanzhuo Ma , Shuai Wan , Fuzheng Yang , Jinkun Guo
IPC: H04N19/11 , H04N19/176 , H04N19/593 , H04N19/136
CPC classification number: H04N19/593 , H04N19/11 , H04N19/136 , H04N19/176
Abstract: An intra prediction method and device and a computer-readable storage medium, the method comprising: configuring actual angle modes indicated by relative angle numbers, wherein the relative angle numbers are successively represented within a prediction direction range corresponding to a preset width and height relationship; starting from a starting angle, using a corresponding actual angle mode after sampling preset angle sample points, said starting angle being determined according to the width and height relationship of processing blocks and the prediction direction range corresponding to the preset width and height relationship, and actual angles having a one-to-one correspondence with the actual angle modes.
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公开(公告)号：US11843803B2
公开(公告)日：2023-12-12
申请号：US17807927
申请日：2022-06-21
Inventor： Wei Zhang , Fuzheng Yang , Shuai Wan , Yanzhuo Ma , Junyan Huo , Sujun Zhang
IPC: H04N19/60 , H04N19/176 , H04N19/30 , H04N19/597
CPC classification number: H04N19/60 , H04N19/176 , H04N19/30 , H04N19/597
Abstract: Provided by the implementations of the present disclosure are a transform method, a coder, a decoder and a computer readable storage medium. The transform method includes: determining normal vectors of encoding points in an encoding point cloud; analyzing the sum total of all coordinates of the normal vectors on the basis of the normal vectors of the encoding points; and determining a transform sequence on the basis of the sum total of all coordinates of the normal vectors.
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公开(公告)号：US11638014B2
公开(公告)日：2023-04-25
申请号：US17514057
申请日：2021-10-29
Inventor： Junyan Huo , Yanzhuo Ma , Shuai Wan , Fuzheng Yang , Wei Zhang , Haixin Wang , Yu Sun
IPC: H04N19/159 , H04N19/105 , H04N19/117 , H04N19/119 , H04N19/176 , H04N19/593 , H04N19/70
Abstract: Methods for determining a prediction value, an encoder, and a decoder are provided. Reconstructed values of neighboring samples of a current block are acquired, and then filtered to obtain a reference value set of the current block. When a size of the current block is smaller than a preset threshold value, a first constant value is calculated according to a bit depth value of a luma component of a sample in the current block. A difference between the first constant value and a first reference value in the reference value set is determined as a first prediction input value in a prediction input value set. Other prediction input values in the prediction input value set other than the first prediction input value are determined according to the reference value set. Prediction values of samples at specific positions in the current block is calculated and then filtered.
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公开(公告)号：US11627342B2
公开(公告)日：2023-04-11
申请号：US17397173
申请日：2021-08-09
Inventor： Shuai Wan , Mingze Wang , Yanzhuo Ma , Junyan Huo , Fuzheng Yang
IPC: H04N11/02 , H04N19/82 , H04N19/117 , H04N19/132 , H04N19/176 , H04N19/186
Abstract: Disclosed are a loop filtering implementation method and apparatus, and a computer storage medium. The method comprises: obtaining an picture to be filtered, wherein the picture to be filtered is generated from an original picture during the video encoding of a video to be encoded, the video to be encoded comprises an original picture frame, and the original picture frame comprises the original picture; based on the picture to be filtered, separately obtaining at least two colour components of the picture to be filtered; determining the fusion information of the picture to be filtered, wherein the fusion information is obtained by fusing the at least two colour components; and based on the fusion information, performing loop filtering processing on the picture to be filtered to obtain at least one colour component subsequent to filtering the picture to be filtered.
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公开(公告)号：US11546608B2
公开(公告)日：2023-01-03
申请号：US17319900
申请日：2021-05-13
Inventor： Junyan Huo , Yanzhuo Ma , Shuai Wan , Fuzheng Yang , Xinwei Li , Haixin Wang
IPC: H04N19/159 , H04N19/176 , H04N19/186 , H04N19/593
Abstract: Disclosed in the implementations of the present disclosure are a mapping method, an encoder, a decoder, and a computer storage medium. The method may include: determining an intra prediction mode used at the time of encoding or decoding a current block; mapping, if the intra prediction mode is a MIP mode, the MIP mode to a first non-MIP mode; and mapping, if the intra prediction mode is a non-MIP mode, the non-MIP mode to a second MIP mode.
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