公开(公告)号：US12058362B2

公开(公告)日：2024-08-06

申请号：US17389873

申请日：2021-07-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haitao Yang ,  Fan Mu ,  Xiang Ma ,  Huanbang Chen ,  Lian Zhang

IPC: H04N19/51 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

CPC classification number: H04N19/51 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

Abstract: The inter prediction method is provided, which includes: obtaining a predicted sample value of a current affine block; determining one or more luminance compensation blocks based on motion vectors of one or more subblocks of the current affine block; determining a linear model coefficient based on a first sample set and a second sample set, where the first sample set includes at least one reconstructed sample neighboring to an edge of the current affine block, the second sample set includes at least one reconstructed sample neighboring to an edge of the one or more luminance compensation blocks, and the sample in the first sample set is in a one-to-one correspondence with the sample in the second sample set; and updating the predicted sample value of the current affine block based on the linear model coefficient, to obtain an updated predicted sample value of the current affine block.

公开(公告)号：US20240251092A1

公开(公告)日：2024-07-25

申请号：US18624894

申请日：2024-04-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiang Ma ,  Haitao Yang ,  Jianle Chen

IPC: H04N19/186 ,  H04N19/176

CPC classification number: H04N19/186 ,  H04N19/176

Abstract: The present disclosure provides a chroma block prediction method and a device. The method includes: parsing a bitstream to obtain first indication information; downsampling a first luma block by a first filter when a value of the first indication information is a first value or by using a second filter when a value of the first indication information is a second value, to obtain a second luma block; obtaining a plurality of chroma samples and a plurality of luma samples; obtaining linear model coefficients based on the plurality of chroma samples and the plurality of luma samples; and obtaining a prediction value of the current chroma block based on the second luma block and the linear model coefficients.

公开(公告)号：US20240144537A1

公开(公告)日：2024-05-02

申请号：US18410778

申请日：2024-01-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiang Ma ,  Haitao Yang ,  YiZhi Deng

IPC: G06T9/00 ,  G06T3/40 ,  G06T7/11

CPC classification number: G06T9/00 ,  G06T3/40 ,  G06T7/11

Abstract: Embodiments of this application provide a data processing method and system, and an electronic device. The method includes: Before an encoder encodes an image rendered by a graphics processing unit, the graphics processing unit obtains rendering information related to rendered image, compresses the rendering information, and transmits compressed rendering information. Then the encoder may perform encoding optimization based on the compressed rendering information in a process of encoding the rendered image. In this way, a data amount of the rendering information can be reduced, and a transmission delay of the rendering information can be reduced. In addition, the encoder performs encoding after receiving the rendering information. Therefore, in this embodiment of this application, duration of waiting for encoding by the encoder can be reduced, thereby reducing a transmission delay in an entire cloud rendering process.

公开(公告)号：US11943451B2

公开(公告)日：2024-03-26

申请号：US17365372

申请日：2021-07-01

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiang Ma ,  Fan Mu ,  Yin Zhao ,  Haitao Yang

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

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

Abstract: This application provides a chroma block prediction method and apparatus. The method includes: obtaining chroma values of chroma samples; obtaining, luma values of luma samples corresponding to the chroma samples; obtaining, from the luma values, a first luma set and a second luma set; grouping the chroma values into a first chroma set and a second chroma set; determining a scaling coefficient in a linear model based on an average value of luma values in the first luma set, an average value of luma values in the second luma set, an average value of chroma values in the first chroma set, and an average value of chroma values in the second chroma set; determining, based on the scaling coefficient, an offset factor in the linear model; and determining prediction information of the chroma block based on the scaling coefficient and the offset factor.

公开(公告)号：US11743451B2

公开(公告)日：2023-08-29

申请号：US17222820

申请日：2021-04-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiang Ma ,  Jianle Chen ,  Yin Zhao ,  Haitao Yang

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/186 ,  H04N19/176

CPC classification number: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186

Abstract: An intra prediction method by using cross component liner prediction mode (CCLM), includes: determining a luma block corresponding to a current chroma block; obtaining luma reference samples of the luma block based on determining L available chroma reference samples of the current chroma block, wherein the obtained luma reference samples of the luma block are down-sampled luma reference samples; calculating linear model coefficients based on the luma reference samples and chroma reference samples that correspond to the luma reference samples; and obtaining a prediction for the current chroma block based on the linear model coefficients and values of a down-sampled luma block of the luma block.

公开(公告)号：US11601667B2

公开(公告)日：2023-03-07

申请号：US17337556

申请日：2021-06-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haitao Yang ,  Fan Mu ,  Lian Zhang ,  Xiang Ma

IPC: H04N11/02 ,  H04N19/51 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184

Abstract: This application provides an example inter prediction method and a related example apparatus. One example method includes parsing a bitstream to determine prediction information of a to-be-processed picture block, where the prediction information indicates that a prediction direction of the to-be-processed picture block is bidirectional prediction, where the bitstream does not include target identification information, and where the target identification information indicates to perform local illumination compensation (LIC) on the to-be-processed picture block; and obtaining a prediction value of the to-be-processed picture block based on the prediction information.

公开(公告)号：US11528506B2

公开(公告)日：2022-12-13

申请号：US17146955

申请日：2021-01-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiang Ma ,  Jianle Chen ,  Haitao Yang

IPC: H04N19/11 ,  H04N19/593 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a video signal partitioned into a chroma block and a first neighboring luma block. The mechanism also includes encoding prediction information for chroma samples of the chroma block into a bitstream. The prediction information for the chroma samples is determined via intra-prediction based on down-sampled neighboring luma samples. The down-sampled neighboring luma samples are generated from a single row of luma samples from the first neighboring luma block. A bitstream including the prediction information for the chroma samples is transmitted to support decoding and display of the chroma samples.

公开(公告)号：US11431991B2

公开(公告)日：2022-08-30

申请号：US17166364

申请日：2021-02-03

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiang Ma ,  Haitao Yang ,  Jianle Chen

IPC: H04N19/00 ,  H04N19/186 ,  H04N19/176

Abstract: The present disclosure provides a chroma block prediction method and a device. The method includes: parsing a bitstream to obtain first indication information; downsampling a first luma block by a first filter when a value of the first indication information is a first value or by using a second filter when a value of the first indication information is a second value, to obtain a second luma block; obtaining a plurality of chroma samples and a plurality of luma samples; obtaining linear model coefficients based on the plurality of chroma samples and the plurality of luma samples; and obtaining a prediction value of the current chroma block based on the second luma block and the linear model coefficients.

公开(公告)号：US11425410B2

公开(公告)日：2022-08-23

申请号：US17185039

申请日：2021-02-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang Chen ,  Xiang Ma ,  Haitao Yang ,  Jianle Chen

IPC: H04N19/513 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

Abstract: This application provides a video picture prediction method and apparatus, to resolve a problem in a conventional technology that a length of a coded video sequence is increased. The first type of identifier may be added to a bitstream. The first type of identifier is used to indicate whether an affine motion model-based inter prediction mode is enabled for a video picture. For a video picture or a picture block included in the slice for which the affine motion model does not need to be used, a parameter, related to the affine motion model, of the picture block may not need to be transmitted. On a decoder side, during decoding of the picture block, the parameter related to the affine motion model does not need to be parsed. This can reduce load of a decoder, increase a processing speed, and decrease a processing time.

公开(公告)号：US11336907B2

公开(公告)日：2022-05-17

申请号：US17149726

申请日：2021-01-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiang Ma ,  Yin Zhao ,  Haitao Yang ,  Jianle Chen

IPC: H04N19/176 ,  H04N19/186

Abstract: Techniques are described of a linear model prediction mode. A set of reconstructed neighboring luma samples are determined. Two pairs of luma value and chroma value are determined according to N reconstructed neighboring luma samples, N reconstructed neighboring chroma samples, M reconstructed neighboring luma samples, and M reconstructed neighboring chroma samples. The minimum value of the N reconstructed neighboring luma samples is not less than the maximum luma value of the remaining reconstructed neighboring luma samples of the set of reconstructed neighboring luma samples. The maximum value of the M reconstructed neighboring luma samples is not larger than the minimum luma value of the remaining reconstructed neighboring luma samples of the set of reconstructed neighboring luma samples. M>1 and N>1. Linear model parameters are determined based on the two pairs of luma value and chroma value, and a predictive block is determined based on the linear model parameters.