公开(公告)号：US20210352276A1

公开(公告)日：2021-11-11

申请号：US17376463

申请日：2021-07-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Maxim Borisovitch Sychev ,  Timofey Mikhailovich Solovyev ,  Alexander Alexandrovich Karabutov ,  Sergey Yurievich Ikonin ,  Jianle Chen

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

Abstract: An apparatus and method for inter prediction of a block includes estimating local illumination compensation (LIC) parameters using first reference samples of a current block and second reference samples of a reference block, wherein a third reference sample of the second reference samples is based on an integer part of a fractional motion vector (MV), and obtaining inter prediction of the current block according to the LIC parameters.

公开(公告)号：US20210127128A1

公开(公告)日：2021-04-29

申请号：US17138250

申请日：2020-12-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Timofey Mikhailovich Solovyev ,  Jianle Chen ,  Sergey Yurievich Ikonin

IPC: H04N19/52 ,  H04N19/169

Abstract: Motion vectors (MVs) are used as predictors for prediction of an image for a current coding unit (CU) within a current video frame. The MVs are from a list of motion vector candidates (MVCs), which is generated. The list includes MVs determined from a first or second pattern, each pattern specifying MVC positions. The first MV positions are within a current video frame, while the second MV positions are for a video frame different from the current frame. The MVC list is generated for a current CU with the MV positions being relative to a position of the current CU. In particular, the MVC list is generated in dependence on a size of the current CU and a size of a grid specifying a minimum distance between two MV positions. One or more MVs as specified by the MV positions of said pattern are included into the MVC list.

公开(公告)号：US20210014511A1

公开(公告)日：2021-01-14

申请号：US17035692

申请日：2020-09-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Maxim Borisovitch Sychev ,  Georgy Aleksandrovich Zhulikov ,  Timofey Mikhailovich Solovyev ,  Sergey Yurievich Ikonin

IPC: H04N19/182 ,  H04N19/513 ,  H04N19/172 ,  H04N19/117

Abstract: The disclosure relates to an image processing apparatus. The image processing apparatus comprises processing circuitry configured to: obtain a direction angle value associated with the target pixel (12a-c); select for the target pixel (12a-c) a plurality of primary interpolation support pixels (10a-d) from the array of pixels (10a-d) on the basis of the position of the target pixel (12a-c); determine pixel values of a first and a second secondary interpolation support pixels (11ac, 11bd) on the basis of the pixel values of the selected primary interpolation support pixels (10a-d), the direction angle value (a, b) and the position of the target pixel (12a-c); and determine the interpolated pixel value of the target pixel (12a-c) on the basis of the pixel values of the first and second secondary interpolation support pixel (11ac, 11bd) and the position of the target pixel (12a-c).

公开(公告)号：US20250133223A1

公开(公告)日：2025-04-24

申请号：US19005272

申请日：2024-12-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Georgii Petrovich Gaikov ,  Sergey Yurievich Ikonin

IPC: H04N19/196 ,  H04N19/124 ,  H04N19/136 ,  H04N19/186 ,  H04N19/70

Abstract: In an image coding method, a first coding parameter is used to control image compression quality when encoding an image. A value of the first coding parameter is smaller than a preset minimal value or larger than a preset maximal value. A target gain vector is obtained based on the first coding parameter, and then the target gain vector is used to encode the image to obtain a bitstream. The first coding parameter is signaled in the bitstream and transmitted to the decoding side so that the bitstream can be correctly decoded. The method uses flexible setting of compression quality and bitstream size without training new coding models.

公开(公告)号：US12244806B2

公开(公告)日：2025-03-04

申请号：US17700904

申请日：2022-03-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Roman Igorevich Chernyak ,  Sergey Yurievich Ikonin ,  Timofey Mikhailovich Solovyev ,  Alexander Alexandrovich Karabutov ,  Elena Alexandrovna Alshina

IPC: H04N19/124 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

Abstract: A method for inverse quantization of a current block of a picture, the method comprising: receiving a bitstream; obtaining a joint chrominance component residual, JCCR, control flag from the bitstream; obtaining a chrominance mapping information from the bitstream based on the JCCR control flag; obtaining at least one chrominance quantization parameter, QP, offset from the bitstream based on the JCCR control flag; obtaining a QP value for the current chrominance block based on the obtained chrominance mapping information and the at least one obtained chrominance QP offset; performing inverse quantization on the current chrominance block by using the obtained QP value.

公开(公告)号：US12206903B2

公开(公告)日：2025-01-21

申请号：US18371593

申请日：2023-09-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Roman Igorevich Chernyak ,  Timofey Mikhailovich Solovyev ,  Sergey Yurievich Ikonin ,  Alexander Alexandrovich Karabutov ,  Jianle Chen

IPC: H04N19/105 ,  H04N19/107 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184 ,  H04N19/70

Abstract: The present disclosure relates to methods and apparatuses for encoding video data into a bitstream and for decoding video data received in a bitstream. A second control flag indicating whether or not to use multi-hypothesis prediction for intra and inter mode is generated and transmitted only conditionally, upon a determination whether or not separate merge list technique for subblock merge candidates is used. On the other hand, a decoder is capable of deciding usage of multi-hypothesis prediction for intra and inter mode and separate merge list technique for subblock merge candidates even though the second control flag is transmitted only conditionally.

公开(公告)号：US12177469B2

公开(公告)日：2024-12-24

申请号：US18146372

申请日：2022-12-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Timofey Mikhailovich Solovyev ,  Semih Esenlik ,  Jianle Chen ,  Anand Meher Kotra ,  Han Gao ,  Biao Wang ,  Roman Igorevich Chernyak ,  Alexander Alexandrovich Karabutov ,  Sergey Yurievich Ikonin

IPC: H04N19/503 ,  H04N19/105 ,  H04N19/13 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

Abstract: A prediction method for an image block comprising a first prediction sub-block and a second prediction sub-block, the prediction method comprising: parsing a first index from a bitstream, wherein the first index is used to obtain prediction information of the first prediction sub-block; parsing a second index from the bitstream; comparing the first index with the second index; adjusting the second index in the event that the second index is equal to or greater than the first index; and obtaining prediction information of the second prediction sub-block according to the adjusted second index.

公开(公告)号：US20240340425A1

公开(公告)日：2024-10-10

申请号：US18749362

申请日：2024-06-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Mikhail Vyacheslavovich Sosulnikov ,  Sergey Yurievich Ikonin ,  Andrey Soroka ,  Elena Alexandrovna Alshina

IPC: H04N19/13 ,  H04N19/103 ,  H04N19/136 ,  H04N19/184

CPC classification number: H04N19/13 ,  H04N19/103 ,  H04N19/136 ,  H04N19/184

Abstract: The present disclosure provides a method of decoding an encoded signal. The method includes receiving at least one bitstream comprising an encoded signal, the signal being entropy encoded with one or more Gaussian mixture models (GMMs), and the at least one bitstream comprising information for obtaining parameters of the one or more GMMs. The method further includes obtaining the GMM parameters based on the information from the at least one bitstream; and entropy decoding the signal using the GMMs with the obtained GMM parameters. The present disclosure further refers to a corresponding encoding method, decoder and encoder.

公开(公告)号：US12075035B2

公开(公告)日：2024-08-27

申请号：US17556180

申请日：2021-12-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Sergey Yurievich Ikonin ,  Victor Alexeevich Stepin ,  Alexander Alexandrovich Karabutov

IPC: H04N19/117 ,  H04N19/132 ,  H04N19/136 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186

CPC classification number: H04N19/117 ,  H04N19/132 ,  H04N19/136 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186

Abstract: A filter, to an encoder and a decoder using the filter, to a filtering method and a corresponding program, as well as to encoding and decoding using the filtering method or the filter. The method includes obtaining of an extended reconstructed block by extending the current reconstructed block to include at least padding samples from the current reconstructed block. After padding, a current pixel of the extended reconstructed block and its neighboring pixels are loaded into a linear buffer and transformed with a one-dimensional (1D) transform. The method is performed in frequency domain using a look-up table and the filtered pixels are transformed back.

公开(公告)号：US20240214562A1

公开(公告)日：2024-06-27

申请号：US18412589

申请日：2024-01-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Sergey Yurievich Ikonin ,  Nicola GIULIANI ,  Biao Wang ,  Elena Alexandrovna Alshina ,  Han Gao

IPC: H04N19/114 ,  H04N19/136 ,  H04N19/177 ,  H04N19/184 ,  H04N19/42 ,  H04N19/587

CPC classification number: H04N19/114 ,  H04N19/136 ,  H04N19/177 ,  H04N19/184 ,  H04N19/42 ,  H04N19/587

Abstract: An apparatus for generating a bitstream representing input frames of a video sequence, is provided. The apparatus includes a processing circuitry configured to generate the bitstream including a synthesized frame at a first position of a first input frame based on two or more input frames. A quality measure for the synthesized frame is determined. Based on determining that the quality measure fulfills a predetermined condition, an indication of the first position is included into a bitstream portion, and based on determining that the quality measure does not fulfill the predetermined condition, content of the first input frame is encoded into the bitstream portion.