公开(公告)号：US12149684B2

公开(公告)日：2024-11-19

申请号：US17856428

申请日：2022-07-01

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/176 ,  H04N19/105 ,  H04N19/11 ,  H04N19/13 ,  H04N19/159 ,  H04N19/167 ,  H04N19/186 ,  H04N19/46 ,  H04N19/593

Abstract: Devices and methods for Intra prediction are provided. The method includes: obtaining a value of an indication information of a current block. When the value of the indication information indicates the intra prediction mode of the current block is not comprised in the set of most probable modes, deriving the intra prediction mode IntraPredModeY of the current block by the following ordered steps: i. IntraPredModeY is set equal to intra_luma_mpm_remainder[xCb][yCb], ii. The value of IntraPredModeY is incremented by one. The method can improve the efficiency to determine the intra prediction mode of the current block.

公开(公告)号：US12132897B2

公开(公告)日：2024-10-29

申请号：US17706328

申请日：2022-03-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Alexey Konstantinovich Filippov ,  Vasily Alexeevich Rufitskiy ,  Han Gao ,  Semih Esenlik ,  Elena Alexandrovna Alshina

IPC: H04N19/107 ,  H04N19/105 ,  H04N19/119 ,  H04N19/159 ,  H04N19/167 ,  H04N19/176 ,  H04N19/503

CPC classification number: H04N19/119 ,  H04N19/105 ,  H04N19/107 ,  H04N19/159 ,  H04N19/167 ,  H04N19/176 ,  H04N19/503

Abstract: The present disclosure provides example computer-implemented methods and decoders of video coding for prediction of a block using an inter prediction mode to obtain predicted samples for the block. One example method includes defining a size of a subblock that is smaller than the size of the block. A position of the subblock within the block is specified. One or more allowed split directions of a triangle partitioning mode (TPM) is determined for the subblock depending on which of the sides of the subblock coincide with the sides of the block. One or more predicted samples for the block is obtained by using TPM partitioning performed for the subblock in accordance with the size of the subblock, the position of the subblock within the block, and TPM split direction of the subblock. The block is reconstructed based on the one or more predicted samples.

公开(公告)号：US20240296593A1

公开(公告)日：2024-09-05

申请号：US18661245

申请日：2024-05-10

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Alexander Alexandrovich Karabutov ,  Panqi Jia ,  Atanas Boev ,  Han Gao ,  Biao Wang ,  Elena Alexandrovna Alshina ,  Johannes Sauer

IPC: G06T9/00 ,  H04N19/13 ,  H04N19/167 ,  H04N19/186

CPC classification number: G06T9/002 ,  H04N19/13 ,  H04N19/167 ,  H04N19/186

Abstract: A conditional coding of components of an image is described. A method of encoding at least a portion of an image is provided, which comprises encoding a primary component of the image independently from at least one secondary component and encoding the at least one secondary component of the image using information from the primary component. Further, it is provided a method of encoding at least a portion of an image, comprising providing a residual comprising a primary residual component for a primary component of the image and at least one secondary residual component for at least one secondary component of the image that is different from the primary component, encoding the primary residual component independently from the at least one secondary residual component and encoding the at least one secondary residual component using information from the primary residual component.

公开(公告)号：US12069291B2

公开(公告)日：2024-08-20

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：US12058330B2

公开(公告)日：2024-08-06

申请号：US17588854

申请日：2022-01-31

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

CPC classification number: H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

Abstract: A method of coding implemented by a decoding device, comprising obtaining a video bitstream; decoding the video bitstream to obtain an initial intra prediction mode value for chroma component of a current coding block; determining whether a ratio between a width for luma component of the current coding block and a width for chroma component of the current coding block is equal to a threshold or not; obtaining a mapped intra prediction mode value for chroma component of the current coding block according to a predefined mapping relationship and the initial intra prediction mode value, when it's determined that the ratio is equal to the threshold; obtaining a prediction sample value for chroma component of the current coding block according to the mapped intra prediction mode value.

公开(公告)号：US12047570B2

公开(公告)日：2024-07-23

申请号：US17141121

申请日：2021-01-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/625 ,  H04N19/70

CPC classification number: H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/625 ,  H04N19/70

Abstract: The present disclosure provides methods and devices. A video method of coding implemented by a decoding device, comprising: when a prediction mode of a current coding block is intra prediction, and the current coding block is processed by using Intra sub-partition coding mode, determining whether a width of a current transform block is larger than or equal to a first threshold or not, and whether the width of the current transform block is smaller than or equal to a second threshold or not, the current transform block corresponding to the current coding block; when the width of the current transform block is larger than or equal to the first threshold and the width of the current transform block is smaller than or equal to the second threshold, performing transform process on the current transform block, wherein a transform core based on DST 7 is used on horizontal direction transform.

公开(公告)号：US12047555B2

公开(公告)日：2024-07-23

申请号：US17557930

申请日：2021-12-21

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/103 ,  H04N19/119 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

CPC classification number: H04N19/103 ,  H04N19/119 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

Abstract: A method for coding implemented by a decoding device or an encoding device includes: obtaining a first prediction mode for a first sub-block, obtaining a second prediction mode for a second sub-block; obtaining a first prediction value for a sample in the current block according to the first prediction mode, obtaining a second prediction value for the sample in the current block according to the second prediction mode; obtaining a value of an indicator, the value of the indicator indicating a blending operation which is performed for the sample in the current block; and obtaining a combined prediction value for the sample in the current block, according to the value of the indictor, the first prediction value, and the second prediction value. The blending operation adaptively performs around a separation line dividing the current block into at least the first sub-block and the second sub-block.

公开(公告)号：US20240161488A1

公开(公告)日：2024-05-16

申请号：US18479611

申请日：2023-10-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: G06V10/82 ,  G06V10/77 ,  G06V20/40 ,  H04N19/513 ,  H04N19/91

CPC classification number: G06V10/82 ,  G06V10/7715 ,  G06V20/46 ,  H04N19/521 ,  H04N19/91

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, two kinds of data are combined during the processing including processing by the neural network. The two kinds of data are obtained from different stages of processing by the network. Some of the advantages may include greater scalability and a more flexible design of the neural network architecture which may further lead to better encoding/decoding performance.

公开(公告)号：US11985305B2

公开(公告)日：2024-05-14

申请号：US17496001

申请日：2021-10-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang Chen ,  Han Gao ,  Haitao Yang

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/70

CPC classification number: H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/70

Abstract: The disclosure relates to a method of coding implemented by a decoding device, comprising: obtaining a value of a maximum number of merging motion vector prediction, MVP, candidates for a current block, wherein the current block is predicted using intra block copy, IBC mode; setting a value of a MVP index to zero, when the value of the maximum number of MVP candidates for the current block is equal to one; obtaining a motion vector of the current block according to the MVP index and a candidate list; obtaining prediction samples values of the current block according to the motion vector of the current block.

公开(公告)号：US11962773B2

公开(公告)日：2024-04-16

申请号：US18076200

申请日：2022-12-06

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 ,  H04N19/176 ,  H04N19/184 ,  H04N19/159

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.