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.

公开(公告)号：US20240098294A1

公开(公告)日：2024-03-21

申请号：US18472049

申请日：2023-09-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/513 ,  H04N19/57

CPC classification number: H04N19/513 ,  H04N19/57

Abstract: The present disclosure relates to motion vector refinement. As a first step, an initial motion vector and a template for the block are obtained. Then, the refinement of the initial motion vector is determined by template matching with said template in a search space. The search space is located on a position given by the initial motion vector and includes one or more fractional sample positions, wherein each of the fractional sample positions belonging to the search space is obtained by interpolation filtering with a filter of a predefined tap-size assessing integer samples only within a window, said window being formed by integer samples accessible for the template matching in said search space.

公开(公告)号：US11910027B2

公开(公告)日：2024-02-20

申请号：US17955229

申请日：2022-09-28

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：US20240037802A1

公开(公告)日：2024-02-01

申请号：US18479507

申请日：2023-10-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Timofey Mikhailovich Solovyev ,  Biao Wang ,  Elena Alexandrovna Alshina ,  Han Gao ,  Panqi Jia ,  Esin Koyuncu ,  Alexander Alexandrovich Karabutov ,  Mikhail Vyacheslavovich Sosulnikov ,  Semih Esenlik ,  Sergey Yurievich Ikonin

IPC: G06T9/00 ,  G06T3/40

CPC classification number: G06T9/002 ,  G06T3/4046

Abstract: This application provides methods and apparatuses for processing of picture data or picture feature data using a neural network with two or more layers. The present disclosure may be applied in the field of artificial intelligence (AI)-based video or picture compression technologies, and in particular, to the field of neural network-based video compression technologies. According to some embodiments, position within the neural network, at which auxiliary information may be entered for processing is selectable based on a gathering condition. The gathering condition may assess whether some prerequisite is fulfilled. Some of the advantages may include better performance in terms of rate and/or disclosure due to the effect of increased flexibility in neural network configurability.