公开(公告)号：US20200304801A1

公开(公告)日：2020-09-24

申请号：US16894268

申请日：2020-06-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shan GAO ,  Weiwei XU ,  Huanbang CHEN ,  Haitao YANG

IPC: H04N19/139 ,  H04N19/56 ,  H04N19/573 ,  H04N19/176

Abstract: An inter prediction method includes parsing, by a processor, a bitstream to obtain a location of a target adjacent image block of a current image block. The method further includes obtaining a preset correspondence between an adjacent image block location and a motion vector precision, wherein in the preset correspondence, locations of at least two adjacent image blocks correspond to different motion vector precisions. The method further includes determining, based on the location of the target adjacent image block and the preset correspondence, a target motion vector precision corresponding to the target adjacent image block. The method further includes determining a motion vector predictor of the current image block based on the location of the target adjacent image block and the target motion vector precision.

公开(公告)号：US20190273950A1

公开(公告)日：2019-09-05

申请号：US16233932

申请日：2018-12-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhao WANG ,  Siwei MA ,  Shan GAO ,  Haitao YANG

IPC: H04N19/96 ,  H04N19/176

Abstract: A decoding method includes: parsing a data stream, and if partitioning an image block with a size of 2N×2N using a quadtree partition pattern is allowed, processing a 2N×N first subimage block and a 2N×2N second subimage block or an N×2N first subimage block and an N×2N second subimage block in a constraint subimage processing mode, wherein an image block partition pattern obtained for the partitioned second subimage block and the partitioned first subimage block is different from an image block partition pattern obtained after the 2N×2N image block is partitioned using the quadtree partition pattern, where the 2N×N first subimage block and the 2N×N second subimage block or the N×2N first subimage block and the N×2N second subimage block are obtained by partitioning the image block with the size of 2N×2N .

公开(公告)号：US20190268608A1

公开(公告)日：2019-08-29

申请号：US16289250

申请日：2019-02-28

Applicant: Huawei Technologies Co., Ltd. ,  University of Science and Technology of China

Inventor： Xiang MA ,  Haitao YANG ,  Li LI ,  Houqiang LI

IPC: H04N19/167 ,  H04N19/513 ,  H04N19/59 ,  H04N19/105 ,  H04N19/176

Abstract: Embodiments of the present invention provide a motion compensating prediction method and a motion compensating prediction apparatus. The motion compensating prediction method includes: determining a location of an initial reference pixel of a current pixel in a reference image, where the current pixel is located in a first sub-image of a current image; when the initial reference pixel is located outside a second sub-image that is in the reference image and that is at a location corresponding to the first sub-image, determining a location of a target reference pixel of the current pixel in the reference image based on the location of the initial reference pixel; and determining a predicted value of a pixel value of the current pixel based on a pixel value of the target reference pixel and/or a pixel value of a pixel near the target reference pixel.

公开(公告)号：US20190141323A1

公开(公告)日：2019-05-09

申请号：US16220749

申请日：2018-12-14

Applicant: Huawei Technologies Co., Ltd. ,  University of Science and Technology of China

Inventor： Haitao YANG ,  Li LI ,  Houqiang LI

IPC: H04N19/119 ,  H04N19/44 ,  H04N19/59 ,  H04N19/80 ,  H04N19/33

Abstract: A video image decoding method includes: parsing a high-resolution image bitstream, to generate a reconstructed image of a first-type sub-image and auxiliary information of the first-type sub-image, where the auxiliary information represents dimension information of the sub-image and position information of the sub-image in a to-be-reconstructed image, the sub-image is a pixel set of any continuous area in the to-be-reconstructed image, and sub-images of the to-be-reconstructed image do not overlap with each other; when a complete reconstructed image fails to be obtained based on the reconstructed image of the first-type sub-image, parsing a low-resolution image bitstream, to generate a reconstructed image of a second-type sub-image, where the second-type sub-image has a resolution the same as that of the first-type sub-image; and splicing the reconstructed image of the first-type sub-image and the reconstructed image of the second-type sub-image based on the auxiliary information, to generate the reconstructed image.

公开(公告)号：US20190098312A1

公开(公告)日：2019-03-28

申请号：US16197585

申请日：2018-11-21

Applicant: Huawei Technologies Co., Ltd. ,  University of Science and Technology of China

Inventor： Huanbang CHEN ,  Haitao YANG ,  Houqiang LI

IPC: H04N19/139 ,  H04N19/184 ,  H04N19/513

Abstract: An image prediction method and a related apparatus are disclosed. The method includes: parsing first bitstream information, used for indicating a motion information unit, to obtain motion information of each first pixel sample and predicted motion information of each second pixel sample; parsing second bitstream information, used for representing differential motion information of each second pixel sample, to obtain motion information of each second pixel sample; and obtaining a predictor of a current image block based on a motion model of the current image block, the motion information of the first pixel sample, and the motion information of the second pixel sample.

公开(公告)号：US20160007020A1

公开(公告)日：2016-01-07

申请号：US14839626

申请日：2015-08-28

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Haitao YANG ,  Bin LI ,  Houqiang LI ,  Jiantong ZHOU

IPC: H04N19/11 ,  H04N19/186 ,  H04N19/46 ,  H04N19/176 ,  H04N19/44 ,  H04N19/593

CPC classification number: H04N19/11 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/44 ,  H04N19/46 ,  H04N19/463 ,  H04N19/593

Abstract: Embodiments of the present invention provide an encoding or decoding method and apparatus. The method includes: extracting first information in a bitstream; determining a chroma component intra prediction mode according to the first information; when the chroma component intra prediction mode cannot be determined according to the first information, extracting second information in the bitstream; and determining the chroma component intra prediction mode according to the second information, where the first information includes information for indicating whether the chroma component intra prediction mode is a DM mode or an LM mode, the second information is used to indicate a remaining mode as the chroma component intra prediction mode, and the remaining mode is one of available chroma component intra prediction modes other than a mode that may be determined according to the first information.

公开(公告)号：US20140341282A1

公开(公告)日：2014-11-20

申请号：US14317040

申请日：2014-06-27

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Haitao YANG ,  Bin LI ,  Houqiang LI ,  Jiantong ZHOU

IPC: H04N19/593

CPC classification number: H04N19/11 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/44 ,  H04N19/46 ,  H04N19/463 ,  H04N19/593

Abstract: Embodiments of the present invention provide an encoding or decoding method and apparatus. The method includes: extracting first information in a bitstream; determining a chroma component intra prediction mode according to the first information; when the chroma component intra prediction mode cannot be determined according to the first information, extracting second information in the bitstream; and determining the chroma component intra prediction mode according to the second information, where the first information includes information for indicating whether the chroma component intra prediction mode is a DM mode or an LM mode, the second information is used to indicate a remaining mode as the chroma component intra prediction mode, and the remaining mode is one of available chroma component intra prediction modes other than a mode that may be determined according to the first information.

Abstract translation: 本发明的实施例提供一种编码或解码方法和装置。 该方法包括：提取比特流中的第一信息; 根据第一信息确定色度分量帧内预测模式; 当色度分量帧内预测模式不能根据第一信息确定时，提取比特流中的第二信息; 以及根据所述第二信息确定所述色度分量帧内预测模式，其中所述第一信息包括用于指示所述色度分量帧内预测模式是DM模式还是LM模式的信息，所述第二信息用于将剩余模式指示为 色度分量帧内预测模式，并且剩余模式是可以根据第一信息确定的模式之外的可用色度分量帧内预测模式之一。

公开(公告)号：US20250159236A1

公开(公告)日：2025-05-15

申请号：US19022973

申请日：2025-01-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang CHEN ,  Haitao YANG ,  Jianle CHEN

IPC: H04N19/513 ,  H04N19/176 ,  H04N19/577 ,  H04N19/70

Abstract: Embodiments of this application relate to the field of video picture coding technologies, and disclose a bidirectional inter prediction method and apparatus, to improve coding efficiency. The method includes: obtaining indication information, where the indication information is used to indicate that second motion information is determined based on first motion information, the first motion information is motion information of a current picture block in a first direction, and the second motion information is motion information of the current picture block in a second direction; obtaining the first motion information; determining the second motion information based on the first motion information; and determining prediction samples of the current picture block based on the first motion information and the second motion information.

公开(公告)号：US20250133218A1

公开(公告)日：2025-04-24

申请号：US18940455

申请日：2024-11-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang CHEN ,  Haitao YANG ,  Jianle CHEN

IPC: H04N19/159 ,  H04N19/132 ,  H04N19/137 ,  H04N19/176 ,  H04N19/82

Abstract: This application discloses an inter prediction method and apparatus. The method includes: determining a plurality of first picture blocks in a to-be-processed picture block based on a preset picture split width, a preset picture split height, and a width and a height of the to-be-processed picture block; separately performing bi-directional optical flow prediction on the plurality of first picture blocks to obtain a predictor of each first picture block; and obtaining a predictor of the to-be-processed picture block with a combination of the predictors of the plurality of first picture blocks. The apparatus includes a determining module, a prediction module, and a combination module. In this application, complexity of implementing inter prediction can be reduced, and processing efficiency can be improved.

公开(公告)号：US20250097437A1

公开(公告)日：2025-03-20

申请号：US18902428

申请日：2024-09-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiang MA ,  Jianle CHEN ,  Haitao YANG

IPC: H04N19/196 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/593

Abstract: This application provides a chroma block prediction method and apparatus. The method includes: obtaining a maximum luma value and a minimum luma value based on luma samples corresponding to neighboring samples of a target chroma block, and calculating a first difference between the maximum luma value and the minimum luma value; if the first difference is not equal to 0, processing the first difference based on a quantity of significant bits of the first difference and a first preset bit depth to obtain a second difference; and determining, based on a first chroma value, a second chroma value, and the second difference, an intra prediction model parameter corresponding to the target chroma block, and determining prediction information of the target chroma block based on the intra prediction model parameter and luma reconstruction information corresponding to the target chroma block.