公开(公告)号：US20240244275A1

公开(公告)日：2024-07-18

申请号：US18402444

申请日：2024-01-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Han Gao ,  Semih Esenlik ,  Jianle Chen ,  Anand Meher Kotra ,  Biao Wang ,  Zhijie Zhao

IPC: H04N19/96 ,  H04N19/119 ,  H04N19/132 ,  H04N19/176 ,  H04N19/70

CPC classification number: H04N19/96 ,  H04N19/119 ,  H04N19/132 ,  H04N19/176 ,  H04N19/70

Abstract: The present disclosure relates generally to video coding and picture partitioning methods. In particular, the disclosure is concerned with relations between partition constraint elements, by setting partitioning rules for different picture partitioning methods. The disclosure provides devices and corresponding methods for generating or processing a bitstream including encoded pictures, particularly for setting and including partition constraint element into the bitstream. One of the devices is configured to determine a minimum luma size of a leaf block resulting from quadtree splitting (MinQtSizeY), determine a maximum luma size of a coding block where partitioning using a binary tree splitting is allowed (MaxBtSizeY) based on the MinQtSizeY, and include information for the determined MinQtSizeY into the bitstream.

公开(公告)号：US11985322B2

公开(公告)日：2024-05-14

申请号：US17684224

申请日：2022-03-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Biao Wang ,  Semih Esenlik ,  Anand Meher Kotra ,  Han Gao ,  Elena Alexandrovna Alshina

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/132 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

Abstract: The general intra prediction process is unnecessarily complicated with inclusion of the reference sample filtering. This application provides solutions for this problem. A method for intra prediction is provided. The method includes: during an intra predicted sample generation stage, obtaining a filtering indication, which indicates whether a filtered value or an unfiltered value of reference samples of the current coding block will be used. When the value of the filtering indication is true, a prediction sample is generated by using the filtered value of the reference samples based on the planar mode. When the value of the filtering indication is false, a prediction sample is generated by using the unfiltered value of the reference samples based on the planar mode. As a result, the reference sample filtering stage can be fully removed or can be combined with other stage.

公开(公告)号：US20230353778A1

公开(公告)日：2023-11-02

申请号：US18313202

申请日：2023-05-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Semih Esenlik ,  Anand Meher Kotra ,  Zhijie Zhao

IPC: H04N19/523 ,  H04N19/573 ,  H04N19/139 ,  H04N19/105 ,  H04N19/533 ,  H04N19/56 ,  H04N19/513 ,  H04N19/109 ,  H04N19/577

CPC classification number: H04N19/523 ,  H04N19/573 ,  H04N19/139 ,  H04N19/105 ,  H04N19/533 ,  H04N19/56 ,  H04N19/513 ,  H04N19/109 ,  H04N19/577

Abstract: The present invention relates to the performance of motion vector refinement in a search space for multi-reference inter-prediction. Two or more reference pictures are selected, one of those used for motion vector refinement. Based on an initial estimate of a motion vector to the reference picture for motion vector refinement, a search space in this reference image is constructed. Using template matching, the first motion vector is refined. The second motion vector to another reference picture is calculated using its initial estimate, the initial estimate of the first motion vector and the refined first motion vector.

公开(公告)号：US11800154B2

公开(公告)日：2023-10-24

申请号：US17211638

申请日：2021-03-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Anand Meher Kotra ,  Semih Esenlik ,  Biao Wang ,  Han Gao ,  Zhijie Zhao ,  Jianle Chen

IPC: H04N19/14 ,  H04N19/80 ,  H04N19/86 ,  H04N19/117 ,  H04N19/176 ,  H04N19/182

CPC classification number: H04N19/86 ,  H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/182 ,  H04N19/80

Abstract: An image processing device for use in an image encoder and/or an image decoder, for deblocking a block edge between a first block and a second block of an image encoded with a block code, is provided. The image processing device comprises a filter for filtering the block edge, configured to, for at least some of the pixels to be filtered, within a deblocking range from the block edge, the deblocking range being perpendicular to the block edge, determine a filtered pixel value from an original pixel value of the pixel and at least one further pixel value, determine a clipping value of the pixel, dependent upon a distance of the pixel from the block edge, and clip the filtered pixel value, using the clipping value resulting in a deblocked pixel value.

公开(公告)号：US11792410B2

公开(公告)日：2023-10-17

申请号：US17827144

申请日：2022-05-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Biao Wang ,  Semih Esenlik ,  Han Gao ,  Anand Meher Kotra ,  Elena Alexandrovna Alshina

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/159 ,  H04N19/196

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/176 ,  H04N19/197

Abstract: A method of coding implemented by a decoding device or an encoding device, comprising obtaining indication information for a luma position (cbWidth/2, cbHeight/2) of a current coding block, relative to a top-left luma sample position (xCb, yCb) of the current coding block; setting a value of a luma intra prediction mode associated with the current coding block to a first default value, when the indication information indicates that an Intra Block Copy (IBC) mode or palette mode is applied for the luma component at the luma position (cbWidth/2, cbHeight/2), relative to the top-left luma sample position (xCb, yCb) of the current coding block; and obtaining a value of a chroma intra prediction mode based on the value of the luma intra prediction mode of the current coding block.

公开(公告)号：US20230319266A1

公开(公告)日：2023-10-05

申请号：US18299070

申请日：2023-04-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Biao Wang ,  Semih Esenlik ,  Anand Meher Kotra ,  Han Gao ,  Jianle Chen ,  Zhijie Zhao

IPC: H04N19/11 ,  H04N19/176 ,  H04N19/436 ,  H04N19/593 ,  H04N19/70

CPC classification number: H04N19/11 ,  H04N19/176 ,  H04N19/436 ,  H04N19/593 ,  H04N19/70

Abstract: A decoding method and a decoder for decoding a current block of a video frame is provided, wherein the decoding method comprises determining a list of Most Probable Modes (MPMs) for the current block. When at least one condition is satisfied, the list of MPMs includes a DC mode, a Vertical mode, a Horizontal mode, an intra prediction mode corresponding to a value of the Vertical mode with a first offset, and an intra prediction mode corresponding to the value of the Vertical mode with a second offset. The decoding method further includes obtaining a MPM flag and a MPM index for the current block from a bitstream of the video, and obtaining an intra prediction mode for the current block for reconstructing the current block.

公开(公告)号：US11750810B2

公开(公告)日：2023-09-05

申请号：US17876317

申请日：2022-07-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Han Gao ,  Jianle Chen ,  Semih Esenlik ,  Zhijie Zhao ,  Anand Meher Kotra

IPC: H04N19/119 ,  H04N19/176 ,  H04N19/192 ,  H04N19/96

CPC classification number: H04N19/119 ,  H04N19/176 ,  H04N19/192 ,  H04N19/96

Abstract: A partitioning method comprises determining whether a current block of a picture is a boundary block and whether the size of the current block is larger than a minimum allowed quadtree leaf node size; and if the current block is the boundary block and the size of the current block is not larger than the minimum allowed quadtree leaf node size (MinQTSize), applying forced binary tree (BT) partitioning to the current block. A method comprises making a determination that a current block of a picture is a boundary block and that a size of the current block is less than or equal to a minimum allowed quadtree (QT) leaf node size (MinQTSize); and applying, in response to the determination, forced binary tree (BT) partitioning to the current block.

公开(公告)号：US20230276076A1

公开(公告)日：2023-08-31

申请号：US18313984

申请日：2023-05-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianle Chen ,  Anand Meher Kotra ,  Semih Esenlik ,  Biao Wang ,  Han Gao ,  Zhijie Zhao

IPC: H04N19/86 ,  H04N19/176 ,  H04N19/186 ,  H04N19/82 ,  H04N19/96

CPC classification number: H04N19/86 ,  H04N19/176 ,  H04N19/186 ,  H04N19/82 ,  H04N19/96

Abstract: A method and image processing device are provided, including a deblocking filter. The deblocking filter modifies values of at most MA samples of the first image block as first filter output values, the at most MA samples being located at a column of the first image block that is perpendicular to and adjacent to the horizontal block edge; and modifies values of at most MB samples of the second image block as second filter output values, the at most MB samples being located at a column of the second image block that is perpendicular to and adjacent to the horizontal block edge. At most a number MA of sample values of the first image block adjacent to the block edge are modified and at most a number MB of sample values of the second image block adjacent to the block edge are modified, wherein MA

公开(公告)号：US11736719B2

公开(公告)日：2023-08-22

申请号：US17713223

申请日：2022-04-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Semih Esenlik ,  Han Gao ,  Anand Meher Kotra ,  Biao Wang ,  Jianle Chen

IPC: H04N19/57 ,  H04N19/56 ,  H04N19/61

CPC classification number: H04N19/56 ,  H04N19/57 ,  H04N19/61

Abstract: A non-transitory computer-readable medium for inter-prediction and an encoder are provided. An initial motion vector is obtained for a current block. Search space positions are determined according to the initial motion vector. Matching costs for the search space positions are checked according to a checking order to select a target search space position with a minimal matching cost. A refining motion vector of the current block is determined based on the initial motion vector and the target search space position. A central search space position is determined according to the checking order, and the central search space position is pointed to by the initial motion vector.

公开(公告)号：US11683533B2

公开(公告)日：2023-06-20

申请号：US17228306

申请日：2021-04-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianle Chen ,  Anand Meher Kotra ,  Semih Esenlik ,  Biao Wang ,  Han Gao ,  Zhijie Zhao

IPC: H04N19/86 ,  H04N19/176 ,  H04N19/186 ,  H04N19/82 ,  H04N19/96

CPC classification number: H04N19/86 ,  H04N19/176 ,  H04N19/186 ,  H04N19/82 ,  H04N19/96

Abstract: A method and image processing device are provided, including a deblocking filter. The deblocking filter modifies values of at most MA samples of the first image block as first filter output values, the at most MA samples being obtained from a column of the first image block that is perpendicular to and adjacent to the horizontal block edge; and modifies values of at most MB samples of the second image block as second filter output values, the at most MB samples being obtained from a column of the second image block that is perpendicular to and adjacent to the horizontal block edge. At most a number MA of sample values of the first image block adjacent to the block edge are modified and at most a number MB of sample values of the second image block adjacent to the block edge are modified, wherein MA