公开(公告)号：US12301807B2

公开(公告)日：2025-05-13

申请号：US18451131

申请日：2023-08-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/122 ,  G06T9/00 ,  G06T9/40 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196 ,  H04N19/61 ,  H04N19/625

Abstract: A method of video coding a block of a picture includes: obtaining a residual signal resulting from inter- or intra-picture prediction; inferring use of a DCT2 transform core for a sequence of the residual signal; processing the transformation of the block using the inferred transform core.

公开(公告)号：US12267532B2

公开(公告)日：2025-04-01

申请号：US18295986

申请日：2023-04-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/96 ,  H04N19/172 ,  H04N19/52

Abstract: A video processing method, comprising: initializing a HMVP list for a current CTU row when the current CTU is the beginning CTU of a current CTU row; and processing the current CTU row based on the HMVP list. By performing the method, the encoding efficiency and decoding efficiency are improved.

公开(公告)号：US12267491B2

公开(公告)日：2025-04-01

申请号：US17871753

申请日：2022-07-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/00 ,  H04N19/117 ,  H04N19/167 ,  H04N19/176 ,  H04N19/96

Abstract: A method of filtering a sample value of a picture and a video decoding apparatus are disclosed, the method comprises: obtaining a reconstructed sample value for a block of the picture; obtaining filter coefficients for adaptive loop filtering according to a bitstream; obtaining a sum value according to the filter coefficients and the reconstructed sample value for the block; rounding the sum value according to a vertical position of a sample in the block, to obtain a rounded sum value; obtaining a filter reconstructed sample value for the block according to the rounded sum value.

公开(公告)号：US12184858B2

公开(公告)日：2024-12-31

申请号：US18319174

申请日：2023-05-17

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N11/02 ,  H04N19/129 ,  H04N19/169 ,  H04N19/174 ,  H04N19/176 ,  H04N19/70

Abstract: A method of decoding of a picture from a video bitstream is disclosed. The video bitstream includes a slice header of a current slice and data representing the current slice. The method comprises: obtaining a parameter used to derive a number of tiles in the current slice from the slice header when a slice address of the current slice is not an address of a last tile in the picture where the current slice located; and reconstructing the current slice using the number of tiles in the current slice and the data representing the current slice.

公开(公告)号：US12177434B2

公开(公告)日：2024-12-24

申请号：US17486082

申请日：2021-09-27

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/12 ,  H04N19/176 ,  H04N19/593 ,  H04N19/61

Abstract: A method of coding implemented by a decoding device or an encoding device comprises determining an intra prediction mode of a current block; and determining selecting of a secondary transform of the current block based on the intra prediction mode determined for the current block.

公开(公告)号：US20240275967A1

公开(公告)日：2024-08-15

申请号：US18604198

申请日：2024-03-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Semih Esenlik ,  Max Blaeser ,  Zhijie Zhao ,  Han Gao ,  Anand Meher Kotra ,  Biao Wang ,  Elena Alexandrovna Alshina

IPC: H04N19/119 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184

CPC classification number: H04N19/119 ,  H04N19/105 ,  H04N19/176 ,  H04N19/184 ,  H04N19/159

Abstract: A method of coding implemented by a decoding device, comprising obtaining a bitstream; obtaining a value of an indicator for a current block according to the bitstream; obtaining a value of a first parameter for the current block and a value of a second parameter for the current block, according to the value of the indicator and a predefined lookup table; obtaining a value of a sample distance for a sample which is located in the current block, according to the value of the first parameter and the value of the second parameter; obtaining a prediction value for the sample, according to the value of the sample distance for the sample.

公开(公告)号：US20240251080A1

公开(公告)日：2024-07-25

申请号：US18628446

申请日：2024-04-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/119 ,  H04N19/176 ,  H04N19/184 ,  H04N19/96

CPC classification number: H04N19/119 ,  H04N19/176 ,  H04N19/184 ,  H04N19/96

Abstract: The present disclosure provides apparatuses and methods for splitting an image into coding units. An image is divided into coding tree units (CTUs) which are hierarchically partitioned. Hierarchical partitioning includes multi-type partitioning such as binary tree or quad tree splitting. For CTUs completely within the image and CTUs on the boundary, respective multi-type partition depths are chosen. The present disclosure provides for multi-type partitioning flexibility in a boundary portion of the image.

公开(公告)号：US12015771B2

公开(公告)日：2024-06-18

申请号：US17382550

申请日：2021-07-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/117 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176

CPC classification number: H04N19/117 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176

Abstract: Embodiments of the present disclosure relate to the field of picture processing. Especially, the embodiments are directed to improving the deblocking filter of an image coding device. During the deblocking, at most a number MA of sample values of the first coding block adjacent to the block edge are modified and at most a number MB of sample values of the second coding block adjacent to the block edge are modified; or at most a number MA of sample values of the second coding block adjacent to the block edge are modified and at most a number MB of sample values of the first coding block adjacent to the block edge are modified, MA≠MB.

公开(公告)号：US11991399B2

公开(公告)日：2024-05-21

申请号：US17516308

申请日：2021-11-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Anand Meher Kotra ,  Semih Esenlik ,  Zhijie Zhao

IPC: H04N19/86 ,  H04N19/117 ,  H04N19/176 ,  H04N19/82

CPC classification number: H04N19/86 ,  H04N19/117 ,  H04N19/176 ,  H04N19/82

Abstract: A system and method for processing a video stream are provided. When coding or decoding a video stream a de-blocking filtering may be applied for reducing discontinuities caused by use of a block-based video coding. The de-blocking filtering is performed using a filter grid. The size of the filter grid is chosen adaptively based on the processing parameters. The adaptive size of the filtering grid is determined based on the number of samples used and modified in de-blocking filtering of an edge of a coding block. The filtering grid may be used both for vertical and horizontal edge filtering.

公开(公告)号：US20240107077A1

公开(公告)日：2024-03-28

申请号：US18476309

申请日：2023-09-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

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

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.