公开(公告)号：US20230124833A1

公开(公告)日：2023-04-20

申请号：US18067599

申请日：2022-12-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Alexey Konstantinovich FILIPPOV ,  Vasily Alexeevich RUFITSKIY

IPC: H04N19/117 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176

Abstract: The present application relates to the field of picture processing, for example still picture/image and/or video picture/image coding. In particular, the application relates to a device and corresponding method for intra-predicting a prediction block of a video image. The device is configured to select a directional intra-prediction mode from a set of directional intra-prediction modes, where each directional intra-prediction mode corresponds to a different intra-prediction angle. Further, the device is configured to select a filter from a set of filters based on the selected directional intra-prediction mode. Further, the device is configured to determine, for a prediction sample of the prediction block, a reference sample from a set of reference samples based on the selected directional intra-prediction mode, and apply the selected filter to the determined reference sample.

公开(公告)号：US20220217332A1

公开(公告)日：2022-07-07

申请号：US17702026

申请日：2022-03-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Alexey Konstantinovich FILIPPOV ,  Haitao YANG ,  Huanbang CHEN ,  Vasily Alexeevich RUFITSKIY

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/174 ,  H04N19/46

Abstract: A computer-implemented method of determining whether an inter prediction process is enabled is provided in this application, the method comprising:
obtaining an indication, the indication indicating whether a slice-level weighted prediction mechanism is to be enabled in the inter prediction process;
determining, based on the indication, whether a non-rectangular merge mode or whether the slice-level weighted prediction mechanism is to be enabled in the inter prediction process.
Furthermore, an encoder for encoding a datastream, like a video stream, using an inter prediction process and a decoder for decoding an encoded datastream, like an encoded video stream, using an inter prediction process, are provided.

公开(公告)号：US20220007052A1

公开(公告)日：2022-01-06

申请号：US17447952

申请日：2021-09-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Alexey Konstantinovich FILIPPOV ,  Vasily Alexeevich RUFITSKIY ,  Biao WANG ,  Semih ESENLIK ,  Jianle CHEN

IPC: H04N19/593 ,  H04N19/105 ,  H04N19/176

Abstract: Devices and methods for intra prediction of DC intra prediction mode are provided. The method includes: obtaining a value of an intra prediction reference line index of a transform block; obtaining prediction samples of the transform block based on reference samples from a reference line. The reference line is indexed by the value of the intra prediction reference line index. The method introduces a harmonization of MRL and non-directional intra prediction (i.e. DC). The harmonization consists of aligning the reference samples from a reference line, which is indexed by the value of the intra prediction reference line index.

公开(公告)号：US20210385440A1

公开(公告)日：2021-12-09

申请号：US17407554

申请日：2021-08-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Alexey Konstantinovich FILIPPOV ,  Vasily Alexeevich RUFITSKIY ,  Jianle CHEN

IPC: H04N19/105 ,  H04N19/117 ,  H04N19/136 ,  H04N19/186 ,  H04N19/196

Abstract: The present invention relates to the field of picture processing. Especially, the invention deals with improving intra prediction (such as the chroma intra prediction) using a cross component linear model (CCLM) and more particularly to spatial filtering used in cross-component linear model for intra prediction with different chroma formats. An apparatus, an encoder, a decoder and corresponding methods for cross-component prediction for a picture, in which the set of down-sampling filters applied during the prediction depends on a chroma format, that may be one of multiple supported chroma formats are provided, so as to improve coding efficiency.

公开(公告)号：US20210377564A1

公开(公告)日：2021-12-02

申请号：US17396395

申请日：2021-08-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Alexey Konstantinovich FILIPPOV ,  Vasily Alexeevich RUFITSKIY ,  Jianle CHEN

IPC: H04N19/593 ,  H04N19/176 ,  H04N19/172 ,  H04N19/184 ,  H04N19/186

Abstract: A method determines an intra-prediction mode for decoding a block of a picture encoded in a bitstream. The method includes: inferring a value of an intra-prediction mode of the block to a value indicating a non-angular mode in a case where prediction information associated with the block indicates that the intra-prediction mode is not an angular mode and that intra-sub-partitioning is applied to the block.

公开(公告)号：US20210352277A1

公开(公告)日：2021-11-11

申请号：US17379601

申请日：2021-07-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Alexey Konstantinovich FILIPPOV ,  Vasily Alexeevich RUFITSKIY ,  Jianle CHEN

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

Abstract: Embodiments provide methods and apparatus for illumination compensation for inter prediction coding of a picture, e.g. for video encoding and decoding. The methods may comprise: obtaining inter-predicted sample values for a current block of the picture; obtaining a first target value (xA) and a second target value (xB) of neighboring samples from a set L of neighboring samples of a reference block, wherein said set L comprises neighboring samples of at least one reference block of the current block, and obtaining corresponding positions A of the sample having the first target value and B of the sample having the second target value relative to the position of the reference block; obtaining respective values of neighboring samples (yA, yB) of the current block at the obtained positions A and B relative to the position of the current block; obtaining values of updating parameters using the calculated values; and updating the values of the inter-predicted samples based on the updating parameters.

公开(公告)号：US20210337194A1

公开(公告)日：2021-10-28

申请号：US17359056

申请日：2021-06-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Alexey Konstantinovich FILIPPOV ,  Vasily Alexeevich RUFITSKIY ,  Jianle CHEN

IPC: H04N19/117 ,  H04N19/82 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

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.

公开(公告)号：US20210127122A1

公开(公告)日：2021-04-29

申请号：US17142185

申请日：2021-01-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Alexey Konstantinovich FILIPPOV ,  Vasily Alexeevich RUFITSKIY ,  Jianle Chen

IPC: H04N19/159 ,  H04N19/593 ,  H04N19/176 ,  H04N19/117 ,  H04N19/103 ,  H04N19/105 ,  H04N19/80

Abstract: A method of intra prediction of a block in a picture of a video is disclosed. The method comprises obtaining an intra prediction mode of the block; determining whether the intra prediction mode of the block is a wide-angle mode; filtering reference samples for the block based, at least in part, upon determining that the intra prediction mode of the block is the wide-angle mode; and generating predicted samples of the block based on filtered reference samples.

公开(公告)号：US20190313118A1

公开(公告)日：2019-10-10

申请号：US16448998

申请日：2019-06-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Alexey Konstantinovich FILIPPOV ,  Vasily Alexeevich RUFITSKIY

IPC: H04N19/593 ,  H04N19/70 ,  H04N19/176

Abstract: An encoding apparatus is described for signaling an extension directional intra-prediction mode within a set of directional intra-prediction modes, the set of directional intra-prediction modes comprising predetermined directional intra-prediction modes and the extension directional intra-prediction mode. The encoding apparatus comprises a mode mapping unit selecting a predetermined directional intra-prediction mode, the selected predetermined directional intra-prediction mode being associated with an intra mode index, and mapping the extension directional intra-prediction mode onto the selected predetermined directional intra-prediction mode. A signaling unit generates a signaling indicator comprising at least one of the intra mode index and a flag value. An intra-prediction unit intra-predicts pixel values of pixels of a rectangular video coding block on the basis of the extension directional intra-prediction mode for providing a predicted rectangular video coding block. An encoding unit encodes the rectangular video coding block on the basis of the predicted rectangular video coding block.

公开(公告)号：US20190166369A1

公开(公告)日：2019-05-30

申请号：US16262726

申请日：2019-01-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Alexey Konstantinovich FILIPPOV ,  Vasily Alexeevich RUFITSKIY

IPC: H04N19/139 ,  H04N19/196 ,  H04N19/513 ,  H04N19/159 ,  H04N19/107

Abstract: A decoding device and a decoding method for decoding a target information from a bitstream of video data, wherein the bitstream comprises a prediction parameter encoded in the bitstream. The decoding device is configured to calculate a randomized host signal based on the prediction parameter and a pseudo-random signal, and to apply a check function to the randomized host signal and thereby obtain the target information. An encoding device and an encoding method, and computer-readable storage media for encoding and for decoding are also disclosed.