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公开(公告)号：US10820008B2
公开(公告)日：2020-10-27
申请号：US15934098
申请日：2018-03-23
Applicant: Huawei Technologies Co., Ltd.
IPC: H04N19/51 , H04N19/82 , H04N19/523 , H04N19/117 , H04N19/176 , H04N19/44 , G06T5/00
Abstract: A video coder for predictive coding a video stream of subsequent frames according to motion compensation into an encoded video bit stream is provided. The video coder comprises a frame configured to store at least one reference frame of the video stream, an inter prediction unit configured to generate a prediction block of a current block of the current frame from a reference block of the reference frame. The prediction block is generated by a motion vector having a fractional-pel resolution, the fractional-pel resolution defines for each integer position of a motion vector a plurality of associated fractional positions. The video coder further comprises a sharpening filter configured to filter the prediction block, and a control unit configured to control the sharpening filter depending on the integer or fractional position of the motion vector used for generating the prediction block.
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公开(公告)号：US20160021397A1
公开(公告)日：2016-01-21
申请号：US14866256
申请日：2015-09-25
Applicant: Huawei Technologies Co., Ltd.
Abstract: The invention relates to a method for protecting a video frame sequence against random and/or burst packet losses, the method comprising: partitioning the video frame sequence into a plurality of interleaved video frame subsequences; independently encoding the plurality of interleaved video frame subsequences by a differential video codec; generating for at least one of the plurality of interleaved video frame subsequences at least one B frame predicted from another one of the plurality of interleaved video frame subsequences; and using the at least one B frame as redundant B frame for protecting the video frame sequence.
Abstract translation: 本发明涉及一种用于保护视频帧序列免受随机和/或突发分组丢失的方法，该方法包括：将视频帧序列划分成多个交错视频帧子序列; 通过差分视频编解码器对所述多个交错视频帧子序列进行独立编码; 为所述多个交错视频帧子序列中的至少一个产生从所述多个交织视频帧子序列中的另一个预测的至少一个B帧; 以及使用所述至少一个B帧作为用于保护视频帧序列的冗余B帧。
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公开(公告)号：US11805249B2
公开(公告)日：2023-10-31
申请号：US17139886
申请日：2020-12-31
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Sergey Yurievich Ikonin , Victor Alexeevich Stepin , Dmitry Yurievich Kuryshev , Jianle Chen , Roman Igorevich Chernyak
IPC: H04N19/117 , H04N19/124 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/61 , H04N19/82 , H04N19/105 , H04N19/129 , H04N19/60 , G06F1/03 , H04N19/80
CPC classification number: H04N19/117 , G06F1/03 , H04N19/105 , H04N19/124 , H04N19/129 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/60 , H04N19/61 , H04N19/80 , H04N19/82
Abstract: A filter for video coding is provided, where the filter is configured for processing a block for generation of a filtered block, and the block comprises a plurality of pixels. The filter includes one or more processor configured to: obtain a quantization parameter (QP) of the block; obtain a threshold (THR) based on the QP; and obtain a look up table based on QP, so as to generate a filtered block based on the threshold and the look up table. The filter is provided allowing improving the efficiency for video coding.
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公开(公告)号：US11509892B2
公开(公告)日：2022-11-22
申请号：US17139900
申请日：2020-12-31
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Victor Alexeevich Stepin , Sergey Yurievich Ikonin , Roman Igorevich Chernyak , Jianle Chen , Dmitry Yurievich Kuryshev
IPC: H04N11/02 , H04N19/117 , H04N19/124 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/61 , H04N19/82 , H04N19/105 , H04N19/129 , H04N19/60 , G06F1/03 , H04N19/80
Abstract: A filter for video coding is provided, where the filter is configured for processing a block for generation of a filtered block, and the block comprises a plurality of pixels. The filter includes one or more processor configured to: scan, according to a predefined scan template, to obtain a current pixel of the block and its neighboring pixels of the current pixel; obtain spectrum components by performing transform for the current pixel and its neighboring pixels; obtain filtered spectrum components based on a filtering parameter and the spectrum components; obtain filtered pixels by performing inverse transform for the filtered spectrum components; and generate a filtered block based on the filtered pixels. The filter is provided allowing improving the efficiency for video coding.
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公开(公告)号：US11375187B2
公开(公告)日：2022-06-28
申请号：US17203261
申请日：2021-03-16
Applicant: Huawei Technologies Co., Ltd.
Inventor： Sergey Yurievich Ikonin , Victor Alexeevich Stepin , Alexander Alexandrovich Karabutov , Elena Alexandrovna Alshina , Roman Igorevich Chernyak , Jianle Chen , Dmitry Yurievich Kuryshev
IPC: H04N19/117 , H04N19/176 , H04N19/184 , H04N19/70 , H04N19/82
Abstract: A filter is configured for processing a reconstructed frame for generation of a filtered reconstructed frame, and wherein the reconstructed frame comprises a plurality of pixels. The filter includes one or more processor configured to scan a current pixel of the reconstructed block and its neighboring pixels of the current pixel according to a predefined scan template, obtain spectrum components by performing transform for the current pixel and its neighboring pixels, obtain filtered spectrum components based on a filtering parameter and the spectrum components, obtain filtered pixels by performing inverse transform for the filtered spectrum components, and generate a filtered reconstructed block based on the filtered pixels.
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Patent Agency Ranking
公开(公告)号：US11240496B2
公开(公告)日：2022-02-01
申请号：US16422428
申请日：2019-05-24
Applicant: Huawei Technologies Co., Ltd.
IPC: H04N19/117 , H04N19/124 , H04N19/154 , H04N19/176 , H04N19/50 , H04N19/61 , H04N19/82
Abstract: A video coding apparatus is described for encoding or decoding a frame of a video, the video coding apparatus comprising a computer program code and a processor configured to carry out operations on the frame of video. The operations include reconstructing the frame, and determining one or more filter parameters and filtering in a frequency domain and a pixel domain a block of the reconstructed frame based on the determined filter parameters to obtain a filtered block of the frame. The determining the one or more filter parameters and filtering in a frequency domain based on the determined filter parameters is performed jointly within a loop, and the one or more filter parameters are based on one or more first parameters that are based on the reconstructed frame and one or more second parameters which are based on a codec signaling information.
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公开(公告)号：US11146825B2
公开(公告)日：2021-10-12
申请号：US16809179
申请日：2020-03-04
Applicant: Huawei Technologies Co., Ltd.
IPC: H04N19/82 , H04N19/176 , H04N19/184
Abstract: The present disclosure relates to the search of more than one K-integer best-matching blocks per block within an image, corresponding to best patches for subsequent filtering. In particular, the positions of K best-matching blocks for a template block are found within an image search area, by performing calculations of the similarity between the template block and a test block at all offset positions within a search area. The positions of K or more best-matching blocks for a non-template block are found within an image search area, by performing calculations of the similarity between the non-template block and a test block at all offset positions found as offsets of best-matching blocks for all template blocks.
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公开(公告)号：US20210211657A1
公开(公告)日：2021-07-08
申请号：US17203261
申请日：2021-03-16
Applicant: Huawei Technologies Co., Ltd.
Inventor： Sergey Yurievich Ikonin , Victor Alexeevich Stepin , Alexander Alexandrovich Karabutov , Elena Alexandrovna Alshina , Roman Igorevich Chernyak , Jianle Chen , Dmitry Yurievich Kuryshev
IPC: H04N19/117 , H04N19/176 , H04N19/82 , H04N19/70 , H04N19/184
Abstract: A filter is configured for processing a reconstructed frame for generation of a filtered reconstructed frame, and wherein the reconstructed frame comprises a plurality of pixels. The filter includes one or more processor configured to scan a current pixel of the reconstructed block and its neighboring pixels of the current pixel according to a predefined scan template, obtain spectrum components by performing transform for the current pixel and its neighboring pixels, obtain filtered spectrum components based on a filtering parameter and the spectrum components, obtain filtered pixels by performing inverse transform for the filtered spectrum components, and generate a filtered reconstructed block based on the filtered pixels.
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公开(公告)号：US10965958B2
公开(公告)日：2021-03-30
申请号：US16448956
申请日：2019-06-21
Applicant: Huawei Technologies Co., Ltd.
IPC: H04N19/635 , H04N19/117 , H04N19/147 , H04N19/172 , H04N19/196 , G06T9/00 , H04N19/154 , H04N19/86 , H04N19/82 , H04N19/60 , H04N19/19 , G06T5/10 , H04N19/176 , G06T5/00
Abstract: An image coding apparatus, comprising an image reconstruction unit configured to reconstruct an image, a parameter determination unit configured to determine one or more filter parameters, based on one or more first parameters which are based on the reconstructed image and one or more second parameters which are based on codec signaling information, and a mixed-domain filtering unit configured to filter in a frequency domain and a pixel domain the reconstructed image based on the determined filter parameters to obtain a filtered image.
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公开(公告)号：US10827200B2
公开(公告)日：2020-11-03
申请号：US16450283
申请日：2019-06-24
Applicant: Huawei Technologies Co., Ltd.
IPC: H04N19/126 , H04N19/19 , H04N19/82 , H04N19/635 , H04N19/117 , H04N19/61 , H04N19/176 , H04N19/154
Abstract: A video coding apparatus for encoding or decoding a frame of a video, the video coding apparatus comprising a frame reconstruction unit configured to reconstruct the frame, a parameter determination unit configured to determine one or more filter parameters, based on one or more first parameters which are based on the reconstructed frame and one or more second parameters which are based on codec signaling information, and a mixed-domain filtering unit configured to filter in a frequency domain and a pixel domain the reconstructed frame based on the determined filter parameters to obtain a filtered frame.
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