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公开(公告)号：US11979559B2
公开(公告)日：2024-05-07
申请号：US17827398
申请日：2022-05-27
Inventor： Zhuoyi Lv , Li Li , Houqiang Li , Haitao Yang
IPC: H04N19/105 , H04N19/139 , H04N19/172 , H04N19/176 , H04N19/52 , H04N19/527 , H04N19/54
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：US11368678B2
公开(公告)日：2022-06-21
申请号：US17114329
申请日：2020-12-07
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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13.发明申请公开(公告)号：US20180131948A1
公开(公告)日：2018-05-10
申请号：US15861218
申请日：2018-01-03
Inventor： Feng Wu , Fangdong Chen , Houqiang Li , Zhuoyi Lv , Haitao YANG
IPC: H04N19/176 , H04N19/179 , H04N19/61 , H04N19/573 , H04N19/55
CPC classification number: H04N19/176 , H04N19/179 , H04N19/46 , H04N19/55 , H04N19/573 , H04N19/58 , H04N19/61 , H04N19/91
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：US09743080B2
公开(公告)日：2017-08-22
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 , H04N19/176 , H04N19/186 , H04N19/159 , H04N19/46 , H04N19/44 , H04N19/593 , H04N19/196 , H04N19/463
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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Patent Agency Ranking
公开(公告)号：US09503729B2
公开(公告)日：2016-11-22
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: H04N7/50 , H04N19/11 , H04N19/176 , H04N19/46 , H04N19/186 , H04N19/44 , H04N19/593 , H04N19/196 , H04N19/463
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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公开(公告)号：US20240333913A1
公开(公告)日：2024-10-03
申请号：US18624948
申请日：2024-04-02
Inventor： Zhuoyi Lv , Li Li , Houqiang Li , Haitao Yang
IPC: H04N19/105 , H04N19/139 , H04N19/172 , H04N19/176 , H04N19/52 , H04N19/527 , H04N19/54
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 of 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：US09906789B2
公开(公告)日：2018-02-27
申请号：US15649412
申请日：2017-07-13
Applicant: Huawei Technologies Co., Ltd.
Inventor： Haitao Yang , Bin Li , Houqiang Li , Jiantong Zhou
IPC: H04N19/11 , H04N19/176 , H04N19/186 , H04N19/159 , H04N19/46 , H04N19/44 , H04N19/593 , H04N19/196 , H04N19/463
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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公开(公告)号：US09497459B2
公开(公告)日：2016-11-15
申请号：US13919674
申请日：2013-06-17
Inventor： Qiu Shen , Qingpeng Xie , Dong Zhang , Houqiang Li
IPC: H04N19/503 , H04N19/89 , H04N19/577
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：US09351001B2
公开(公告)日：2016-05-24
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: H04N7/12 , H04N19/11 , H04N19/176 , H04N19/46 , H04N19/186 , 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.
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