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1.发明授权公开(公告)号：US12101467B2
公开(公告)日：2024-09-24
申请号：US17703661
申请日：2022-03-24
Applicant: Huawei Technologies Co., Ltd.
Inventor： Alexey Konstantinovich Filippov , Vasily Alexeevich Rufitskiy , Elena Alexandrovna Alshina
IPC: H04N19/105 , H04N19/136 , H04N19/159 , H04N19/176
CPC classification number: H04N19/105 , H04N19/136 , H04N19/159 , H04N19/176
Abstract: A method performs combined inter-intra prediction of a current block in video coding. The combined intra-inter-prediction is used for providing a prediction block, and the weights for the intra- and inter-prediction blocks used to obtain the prediction block can be finely tuned The method includes: determining prediction information for a neighboring block adjacent to the current block, the prediction information comprising a prediction mode used for prediction of the neighboring block, determining whether matrix-based intra prediction (MIP) is to be used for the prediction of the current block; and predicting the current block as a weighted sum of an intra-predicted block and an inter-predicted block. The weights of the inter-predicted block and the intra-predicted block are determined based on the prediction information for the neighboring block and the determining whether MIP is to be used for the prediction of the current block.
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公开(公告)号：US11936860B2
公开(公告)日：2024-03-19
申请号：US17359056
申请日：2021-06-25
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
IPC: H04N19/142 , H04N19/105 , H04N19/117 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/82
CPC classification number: H04N19/117 , H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/82
Abstract: The present disclosure relates to apparatuses and methods for intra- or inter-prediction for video encoding and decoding. In one embodiment, a method includes obtaining a reference sample and obtain a fractional sample position p; filtering the reference sample using a subpixel interpolation filter to obtain a predicted sample value. In the method, the filter coefficients of the subpixel interpolation filter satisfy a linear combination of p and a filter strength parameter S.
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公开(公告)号：US11930209B2
公开(公告)日：2024-03-12
申请号：US17361692
申请日：2021-06-29
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
IPC: H04N19/593 , H04N19/105 , H04N19/167 , H04N19/176 , H04N19/186
CPC classification number: H04N19/593 , H04N19/105 , H04N19/167 , H04N19/176 , H04N19/186
Abstract: Apparatuses and methods for encoding and decoding are provided. The method for intra predicting a chroma sample of a block by applying cross-component linear model includes: obtaining reconstructed luma samples; determining maximum and minimum luma sample values based on the reconstructed luma samples; obtaining a difference of the maximum and minimum luma sample values. The method also includes: fetching a value out of a lookup table (LUT) by using a set of bits as an index, the set of bits following a position of the most-significant bit; obtaining linear model parameters based on the fetched value; and calculating a predicted chroma sample value by using the obtained linear model parameters. The efficiency to fetch the value out of the LUT is increased.
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公开(公告)号：US11805250B2
公开(公告)日：2023-10-31
申请号：US17210136
申请日：2021-03-23
Applicant: Huawei Technologies Co., Ltd.
IPC: H04N19/117 , H04N19/105 , H04N19/159 , H04N19/132 , H04N19/176
CPC classification number: H04N19/117 , H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176
Abstract: A method for intra reference sample filter switching for intra-prediction is described herein. The method comprises determining an intra prediction mode and an aspect ratio of a block to be predicted, and selecting an interpolation filter or a reference sample smoothing filter based on the intra prediction mode and the aspect ratio.
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公开(公告)号：US11716466B2
公开(公告)日：2023-08-01
申请号：US17334267
申请日：2021-05-28
Applicant: Huawei Technologies Co., Ltd.
IPC: H04N19/11 , H04N19/105 , H04N19/119 , H04N19/136 , H04N19/139 , H04N19/176 , H04N19/593 , H04N19/70
CPC classification number: H04N19/11 , H04N19/105 , H04N19/119 , H04N19/136 , H04N19/139 , H04N19/176 , H04N19/593 , H04N19/70
Abstract: An intra-prediction method includes: determining, by an intra-prediction apparatus, a directional intra-prediction mode for a rectangular video coding block from an extended set of directional intra-prediction modes, wherein the extended set of directional intra-prediction modes includes extended directional intra-prediction modes and conventional directional intra-prediction modes and determining, by the intra-prediction apparatus, a plurality of available reference samples based on a direction of the directional intra-prediction mode. The method further includes: intra-predicting, by the intra-prediction apparatus, pixel values of pixels of the rectangular video coding block based on the plurality of available reference samples.
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Patent Agency Ranking
公开(公告)号：US20230050376A1
公开(公告)日：2023-02-16
申请号：US17937176
申请日：2022-09-30
Applicant: Huawei Technologies Co., Ltd.
Inventor： Alexey Konstantinovich Filippov , Vasily Alexeevich Rufitskiy , Elena Alexandrovna Alshina
IPC: H04N19/132 , H04N19/105 , H04N19/186 , H04N19/176
Abstract: A method for intra prediction of a video block, comprising: padding of luminance reference samples rows for a chroma component of a current block vertically aligned with a largest coding unit (LCU) boundary; applying a filter F to reconstructed luma samples of a luma component of the current block and to luma samples in selected position neighboring to the current block, to obtain filtered reconstructed luma samples, wherein a shape of the F is same for blocks in the LCU; obtaining linear model coefficients, based on the filtered reconstructed luma samples; and performing cross-component prediction based on the obtained linear model coefficients and the filtered reconstructed luma samples of the current block, to obtain a prediction value of the chroma component of the current block.
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公开(公告)号：US20220312038A1
公开(公告)日：2022-09-29
申请号：US17707354
申请日：2022-03-29
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
IPC: H04N19/65 , H04N19/14 , H04N19/182 , H04N19/82 , H04N19/147 , H04N19/117 , H04N19/196 , H04N19/172
Abstract: A method and apparatus for adaptively processing video samples in a video signal frame, the video samples being arranged in a Largest Coding Unit. The method comprises extracting a plurality of video samples from the Largest Coding Unit, calculating a correction offset for a first video sample of the extracted plurality of video samples upon the basis of a first value of the first video sample and a second value of a second video sample of the extracted plurality of video samples, and weighting the first video sample with the correction offset.
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公开(公告)号：US11277621B2
公开(公告)日：2022-03-15
申请号：US16735252
申请日：2020-01-06
Applicant: Huawei Technologies Co., Ltd.
IPC: H04N19/159 , H04N19/105 , H04N19/132 , H04N19/176 , G06F17/18
Abstract: A video coding block is intra-predicted on the basis of reference samples from a set of neighboring video coding blocks. A fitting plane is determined on the basis of the reference samples. The fitting plane defines a plurality of fitting samples. For a selected directional intra prediction mode, the sample values of the video coding block are predicted on the basis of the reference sample values and the fitting sample values.
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9.发明授权公开(公告)号：US11245897B2
公开(公告)日：2022-02-08
申请号：US16854665
申请日：2020-04-21
Applicant: Huawei Technologies Co., Ltd.
Inventor： Alexey Konstantinovich Filippov , Alexander Alexandrovich Karabutov , Shan Liu , Vasily Alexeevich Rufitskiy
IPC: H04N19/119 , H04N19/105 , H04N19/176 , H04N19/33
Abstract: A picture encoding apparatus configured to hierarchically partition a block of picture data into sub-blocks; determine that a sub-block being coded belongs to an unequally-sized partitioned block; prepare a list of neighboring blocks for the sub-block of the unequally-sized partitioned block based on a size of the sub-block of the unequally-sized partitioned block and a partitioning type of at least one neighboring block of the unequally-sized partitioned block; and derive a context model that is used to encode split information of the sub-block of the unequally-sized partitioned block into a bit stream based on the prepared list of neighboring blocks.
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公开(公告)号：US20210152818A1
公开(公告)日：2021-05-20
申请号：US17135076
申请日：2020-12-28
Applicant: Huawei Technologies Co., Ltd.
IPC: H04N19/11 , H04N19/146 , H04N19/159 , H04N19/176 , G06F1/03
Abstract: A device and method for intra-predicting a rectangular and non-square video coding block, the device including an intra-prediction apparatus configured for intra-predicting a rectangular and non-square video coding block according to a set of directional intra-prediction modes distributed over a set of directional ranges, where the intra-prediction apparatus being configured for configured for intra-predicting the rectangular and non-square video coding block includes the intra-prediction apparatus being configured to select a directional range from the set of directional ranges, and determine a number of directional intra-prediction modes of the selected directional range according to a size of a block.
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