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公开(公告)号:US11323717B2
公开(公告)日:2022-05-03
申请号:US16895653
申请日:2020-06-08
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor: Zhijie Zhao , Bastian Wandt , Yiqun Liu , Thorsten Laude , Bodo Rosenhahn , Joern Ostermann
IPC: H04N19/132 , H04N19/137 , H04N19/176 , H04N19/186 , H04N19/625
Abstract: The present disclosure relates to encoding and decoding video by employing texture coding. In particular, a texture region is identified within a video picture and a texture patch is determined for the texture region. Moreover, a first set of parameters is derived specifying weighting factors for reconstructing spectral coefficients of the texture region by fitting the texture region in a spectral domain to a first function of the texture patch, the first function being defined by the first set of parameters. The texture patch and the first set of parameters are then included into a bitstream which is output by an encoder and provided in this way to the decoder which reconstructs the texture based on the patch and the function applied to the patch.
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公开(公告)号:US11252413B2
公开(公告)日:2022-02-15
申请号:US16895736
申请日:2020-06-08
Applicant: Huawei Technologies Co., Ltd.
Inventor: Zhijie Zhao , Bastian Wandt , Yiqun Liu , Thorsten Laude , Bodo Rosenhahn , Joern Ostermann
IPC: H04N19/136 , H04N19/103 , H04N19/17 , H04N19/543
Abstract: The present disclosure relates to encoding a decoding video employing texture coding. In particular, a texture region is identified within a video picture and a texture patch is determined for said region. Moreover, a set of parameters specifies luminance within the texture region (1001) by fitting the texture region samples to a two-dimensional polynomial function of the patch determined according to the set of parameters (1040); and/or motion within the texture region by fitting motion estimated between the texture region of the video picture and an adjacent picture to a two-dimensional polynomial The texture patch and the first set of parameters are then included into a bitstream which is output of the encoder and provided in this way to the decoder which reconstructs the texture based on the patch and the function applied to the patch.
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公开(公告)号:US10536716B2
公开(公告)日:2020-01-14
申请号:US15819801
申请日:2017-11-21
Applicant: Huawei Technologies Co., Ltd.
Inventor: Zhijie Zhao , Yiqun Liu , Joern Ostermann
IPC: H04N19/573 , H04N19/105 , H04N19/139 , H04N19/70 , H04N19/82 , H04N19/533 , H04N19/567 , H04N19/176 , H04N19/147 , H04N19/117 , H04N19/513 , H04N19/65 , H04N19/124 , H04N19/129 , H04N19/13 , H04N19/18 , H04N19/593
Abstract: A frame buffer is adapted to store at least one reference frame of a video stream, said reference frame being different from a current frame of the video stream. A motion estimation unit is adapted to generate a motion vector by estimating motion between a reference block of the reference frame and a current block of the current frame. A blurring filter selection unit is adapted to select one of a plurality of blurring filters depending on the orientation of the motion vector. A filtering unit is adapted to generate a filtered reference block by applying the selected blurring filter to the reference block. A motion compensation unit is adapted to generate a filtered prediction block of the current block on the basis of the current block, the motion vector and the filtered reference block.
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公开(公告)号:US10491921B2
公开(公告)日:2019-11-26
申请号:US15819801
申请日:2017-11-21
Applicant: Huawei Technologies Co., Ltd.
Inventor: Zhijie Zhao , Yiqun Liu , Joern Ostermann
IPC: H04N19/573 , H04N19/105 , H04N19/139 , H04N19/70 , H04N19/82 , H04N19/533 , H04N19/567 , H04N19/176 , H04N19/147 , H04N19/117 , H04N19/513 , H04N19/65 , H04N19/124 , H04N19/129 , H04N19/13 , H04N19/18 , H04N19/593
Abstract: A frame buffer is adapted to store at least one reference frame of a video stream, said reference frame being different from a current frame of the video stream. A motion estimation unit is adapted to generate a motion vector by estimating motion between a reference block of the reference frame and a current block of the current frame. A blurring filter selection unit is adapted to select one of a plurality of blurring filters depending on the orientation of the motion vector. A filtering unit is adapted to generate a filtered reference block by applying the selected blurring filter to the reference block. A motion compensation unit is adapted to generate a filtered prediction block of the current block on the basis of the current block, the motion vector and the filtered reference block.
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