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公开(公告)号：US20210006818A1
公开(公告)日：2021-01-07
申请号：US17025901
申请日：2020-09-18
Inventor： Li LI , Houqiang LI , Zhuoyi LV , Sixin LIN
IPC: H04N19/513 , H04N19/54 , H04N19/182 , H04N19/176 , H04N19/51 , H04N19/593
Abstract: A picture prediction method and a related apparatus are disclosed. The picture prediction method includes: determining motion vector predictors of K pixel samples in a current picture block, where K is an integer greater than 1, the K pixel samples include a first vertex angle pixel sample in the current picture block, a motion vector predictor of the first vertex angle pixel sample is obtained based on a motion vector of a preset first spatially adjacent picture block of the current picture block, and the first spatially adjacent picture block is spatially adjacent to the first vertex angle pixel sample; and performing, based on a non-translational motion model and the motion vector predictors of the K pixel samples, pixel value prediction on the current picture block. Solutions in the embodiments of the present application are helpful in reducing calculation complexity of picture prediction based on a non-translational motion model.
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公开(公告)号：US20180152728A1
公开(公告)日：2018-05-31
申请号：US15882346
申请日：2018-01-29
Inventor： Fangdong CHEN , Sixin LIN , Houqiang LI , Li LI
IPC: H04N19/58 , H04N19/124 , H04N19/172
Abstract: A video encoding and decoding method and apparatus are provided. The video encoding method includes: obtaining a first statistical characteristic of previous K frames of images of a video sequence; determining a first background frame; determining, according to the first statistical characteristic, a QP used for encoding the first background frame; encoding the first background frame according to the QP, to obtain a first background long-term reference frame; and encoding the (K+1)th frame of image of the video sequence to the (K+L)th frame of image of the video sequence according to the first background long-term reference frame. When encoding is performed on the (K+1)th frame of image of the video sequence to the (K+L)th frame of image of the video sequence, the used QP for encoding the background long-term reference frame is determined according to the first statistical characteristic related to video content of the previous K frames of images.
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公开(公告)号：US20130279585A1
公开(公告)日：2013-10-24
申请号：US13919674
申请日：2013-06-17
Applicant: Huawei Technologies Co., Ltd.
Inventor： Qiu SHEN , Qingpeng XIE , Dong ZHANG , Houqiang LI
IPC: H04N7/36
CPC classification number: H04N19/577 , H04N19/503 , H04N19/89
Abstract: Embodiments of the present invention disclose a method and an apparatus for detecting frame types. The method includes: detecting play time of each frame; and if the play time of a current frame is less than the maximum play time of received frames, determining the current frame as a bi-directional predicted frame, B-frame. In the technical solutions provided by the embodiments of the present invention, the frame types are determined according to a coding sequence of various frames and comparison between data amounts of various frames received earlier and later, without decoding a payload. Therefore the impact of a reduction factor is eliminated and the frame types can be detected more accurately.
Abstract translation: 本发明的实施例公开了一种用于检测帧类型的方法和装置。 该方法包括：检测每帧的播放时间; 如果当前帧的播放时间小于接收帧的最大播放时间，则将当前帧确定为双向预测帧B帧。 在本发明实施例提供的技术方案中，帧类型根据各种帧的编码顺序以及较早和稍后接收到的各种帧的数据量之间的比较来确定，而无需解码有效载荷。 因此，消除了减小因子的影响，并且可以更准确地检测帧类型。
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公开(公告)号：US20170188041A1
公开(公告)日：2017-06-29
申请号：US15461274
申请日：2017-03-16
Inventor： Li LI , Houqiang LI , Zhuoyi LV , Sixin LIN
IPC: H04N19/513 , H04N19/593
Abstract: A picture prediction method and a related apparatus are disclosed. The picture prediction method includes: determining motion vector predictors of K pixel samples in a current picture block, where K is an integer greater than 1, the K pixel samples include a first vertex angle pixel sample in the current picture block, a motion vector predictor of the first vertex angle pixel sample is obtained based on a motion vector of a preset first spatially adjacent picture block of the current picture block, and the first spatially adjacent picture block is spatially adjacent to the first vertex angle pixel sample; and performing, based on a non-translational motion model and the motion vector predictors of the K pixel samples, pixel value prediction on the current picture block. Solutions in the embodiments of the present application are helpful in reducing calculation complexity of picture prediction based on a non-translational motion model.
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公开(公告)号：US20170034510A1
公开(公告)日：2017-02-02
申请号：US15294498
申请日：2016-10-14
Applicant: Huawei Technologies Co., Ltd.
Inventor： Haitao YANG , Bin LI , Houqiang LI , Jiantong ZHOU
IPC: H04N19/11 , H04N19/186 , H04N19/159 , H04N19/176
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。
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Patent Agency Ranking
公开(公告)号：US20150296221A1
公开(公告)日：2015-10-15
申请号：US14750608
申请日：2015-06-25
Applicant: Huawei Technologies Co., Ltd.
Inventor： Haitao YANG , Bin LI , Houqiang LI , Jiantong ZHOU
IPC: H04N19/593 , H04N19/46 , H04N19/11 , H04N19/186 , H04N19/176 , H04N19/44
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。
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公开(公告)号：US20220295047A1
公开(公告)日：2022-09-15
申请号：US17827398
申请日：2022-05-27
Inventor： Zhuoyi LV , Li LI , Houqiang LI , Haitao YANG
IPC: H04N19/105 , H04N19/54 , H04N19/527 , H04N19/176 , H04N19/139 , H04N19/172 , H04N19/52
Abstract: An image prediction method and device are disclosed. The method includes: obtaining a first reference unit of an image unit, where respective predicted images are obtained for the image unit and the first reference unit by using a same affine model; obtaining motion information of basic motion compensation units at two or more preset positions in the first reference unit; and obtaining motion information of a basic motion compensation unit of the image unit according to the motion information. In this way, motion information of the first reference unit using a same affine motion prediction model is reused, and a more accurate motion vector of a current image unit is obtained, improving prediction accuracy and maintaining encoding and decoding complexity, thereby improving encoding and decoding performance.
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公开(公告)号：US20210289214A1
公开(公告)日：2021-09-16
申请号：US17217808
申请日：2021-03-30
Inventor： Feng WU , Fangdong CHEN , Houqiang LI , Zhuoyi LV , Haitao YANG
IPC: H04N19/176 , H04N19/46 , H04N19/58 , H04N19/179 , H04N19/55 , H04N19/573 , H04N19/61
Abstract: The present disclosure provides a reference image encoding method, including: encoding sequence, to obtain a reconstructed image of a first and second reference images; determining whether a local area in the second reference image is suitable for updating first reference image; determining whether the first reference image is updated; when the first reference image is not updated, and it is determined the second reference image is suitable for updating the first reference image, replacing a pixel value of a corresponding area or a related area in the first reference image with a pixel value of the local area in the second reference image; and compiling, into the bitstream.
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公开(公告)号：US20180192047A1
公开(公告)日：2018-07-05
申请号：US15906418
申请日：2018-02-27
Inventor： Zhuoyi LV , Li LI , Houqiang LI , Haitao YANG
IPC: H04N19/105 , H04N19/139 , H04N19/172 , H04N19/52
CPC classification number: H04N19/105 , H04N19/139 , H04N19/172 , H04N19/176 , H04N19/52 , H04N19/527 , H04N19/54
Abstract: An image prediction method and device are disclosed. The method includes: obtaining a first reference unit of an image unit, where respective predicted images are obtained for the image unit and the first reference unit by using a same affine model; obtaining motion information of basic motion compensation units at two or more preset positions in the first reference unit; and obtaining motion information of a basic motion compensation unit of the image unit according to the motion information. In this way, motion information of the first reference unit using a same affine motion prediction model is reused, and a more accurate motion vector of a current image unit is obtained, improving prediction accuracy and maintaining encoding and decoding complexity, thereby improving encoding and decoding performance.
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公开(公告)号：US20140328399A1
公开(公告)日：2014-11-06
申请号：US14317083
申请日：2014-06-27
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Inventor： Haitao YANG , Bin LI , Houqiang LI , Jiantong ZHOU
IPC: H04N19/50
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.
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