公开(公告)号：US20210297656A1

公开(公告)日：2021-09-23

申请号：US17222820

申请日：2021-04-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiang Ma ,  Jianle Chen ,  Yin Zhao ,  Haitao Yang

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/186 ,  H04N19/176

Abstract: An intra prediction method by using cross component liner prediction mode (CCLM), includes: determining a luma block corresponding to a current chroma block; obtaining luma reference samples of the luma block based on determining L available chroma reference samples of the current chroma block, wherein the obtained luma reference samples of the luma block are down-sampled luma reference samples; calculating linear model coefficients based on the luma reference samples and chroma reference samples that correspond to the luma reference samples; and obtaining a prediction for the current chroma block based on the linear model coefficients and values of a down-sampled luma block of the luma block.

公开(公告)号：US11070799B2

公开(公告)日：2021-07-20

申请号：US17011504

申请日：2020-09-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Biao Wang ,  Semih Esenlik ,  Anand Meher Kotra ,  Han Gao ,  Jianle Chen

IPC: H04N19/11 ,  H04N19/167 ,  H04N19/176 ,  H04N19/46 ,  H04N19/593 ,  H04N19/105 ,  H04N19/13 ,  H04N19/159 ,  H04N19/186

Abstract: Devices and methods for Intra prediction are provided. The method includes: obtaining a value of a first indication information of a current block and a value of a reference index line of the current block. When the value of the first indication information indicates the intra prediction mode of the current block is comprised in the set of most probable modes, and when the value of the reference index line indicates the closest neighboring reference line to the current block is used, the method further includes obtaining a value of a second indication information of the current block, the value of the second indication information of the current block indicating whether the intra prediction mode of the current block is Planar mode or not. The method can improve the efficiency to determine the intra prediction mode of the current block.

公开(公告)号：US20210211665A1

公开(公告)日：2021-07-08

申请号：US17204136

申请日：2021-03-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Han Gao ,  Semih Esenlik ,  Jianle Chen ,  Anand Meher Kotra ,  Biao Wang ,  Zhijie Zhao

IPC: H04N19/119 ,  H04N19/96 ,  H04N19/169 ,  H04N19/176

Abstract: A method of image partitioning, comprises determining a first indicator, wherein the first indicator is shared by a first part of a bitstream; determining a partitioning of an image area corresponding to the first part of the bitstream with binary tree (BT) splitting or ternary tree (TT) splitting when the first indicator takes a first value; and determining the partitioning of the image area corresponding to the first part of the bitstream without BT splitting and TT splitting when the first indicator takes a second value, wherein the first value is different from the second value.

公开(公告)号：US20210203927A1

公开(公告)日：2021-07-01

申请号：US17199929

申请日：2021-03-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Biao Wang ,  Semih ESENLIK ,  Anand Meher Kotra ,  Han Gao ,  Jianle Chen ,  Zhijie Zhao

IPC: H04N19/11 ,  H04N19/176 ,  H04N19/436 ,  H04N19/593 ,  H04N19/70

Abstract: A decoding method and a decoder for decoding a current block of a video frame is provided, wherein the decoding method comprises determining a list of Most Probable Modes (MPMs) for the current block. When at least one condition is satisfied, the list of MPMs includes a DC mode, a Vertical mode, a Horizontal mode, an intra prediction mode corresponding to a value of the Vertical mode with a first offset, and an intra prediction mode corresponding to the value of the Vertical mode with a second offset. The decoding method further includes obtaining a MPM flag and a MPM index for the current block from a bitstream of the video, and obtaining an intra prediction mode for the current block for reconstructing the current block.

公开(公告)号：US20210136423A1

公开(公告)日：2021-05-06

申请号：US17150968

申请日：2021-01-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianle Chen ,  Yin Zhao ,  Haitao Yang

IPC: H04N19/96 ,  H04N19/169

Abstract: A video coding mechanism is disclosed. The mechanism includes partitioning an image to create at least one coding tree unit (CTU) with at least one coding tree node. The mechanism further includes determining that the coding tree node height is twice a maximum transform unit (TU) height and the coding tree node width is twice a maximum TU width. The mechanism further includes selecting a split mode for the coding tree node based on the determination. The split mode is selected from a quad-tree split, a horizontal binary-tree split, and no split. The mechanism further includes applying the split mode to the coding tree node to create one or more coding units (CUs). The mechanism further includes encoding the CUs into a bitstream. The mechanism further includes transmitting the bitstream toward a decoder.

公开(公告)号：US20210134018A1

公开(公告)日：2021-05-06

申请号：US17146234

申请日：2021-01-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Vladyslav Zakharchencko ,  Ye-Kui Wang ,  Jianle Chen ,  Dejung Zhang

IPC: G06T9/00 ,  H04N19/172 ,  H04N19/159 ,  H04N19/184 ,  H04N19/105 ,  H04N19/70

Abstract: An apparatus comprises an encoder configured to obtain point clouds, generate a first field that implements prediction type signaling of the point clouds, generate a second field that implements temporal order signaling of the point clouds, and encode the first field and the second field into an encoded bitstream; and an output interface coupled to the encoder and configured to transmit the encoded bitstream. An apparatus comprises a receiver configured to receive an encoded bitstream; and a processor coupled to the encoded bitstream and configured to decode the encoded bitstream to obtain a first field and second field, wherein the first field implements prediction type signaling of point clouds, and wherein the second field implements temporal order signaling of the point clouds, and generate the point clouds based on the first field and the second field.

公开(公告)号：US20210127139A1

公开(公告)日：2021-04-29

申请号：US17134442

申请日：2020-12-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Anand Meher Kotra ,  Biao Wang ,  Zhijie Zhao ,  Semih Esenlik ,  Han Gao ,  Jianle Chen

IPC: H04N19/82 ,  H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/86 ,  H04N19/124

Abstract: An in-loop deblocking filter apparatus (120) for processing a current row or column of samples into a filtered row or column of samples. The current row or column of samples comprises a plurality of samples from a first sample block and a horizontally or vertically neighboring second sample block of a reconstructed picture of a video stream. The samples of the current row or column of samples have sample values pN−1−p0, q0−qN−1 wherein N is an even integer greater than 2. If a first condition or a second condition is satisfied, the current row or column is processed by: determining a filtered sample value q0′ by applying a (2N−1)-tap filter to the sample values pN−2, . . . , p0, q0, . . . , qN−1 of the current row or column; and/or determining a filtered sample value p0′ by applying a (2N−1)-tap filter to the sample values pN−1, . . . , p0, q0, . . . , qN−2 of the current row or column.

公开(公告)号：US20210127113A1

公开(公告)日：2021-04-29

申请号：US17139913

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: H04N19/129 ,  H04N19/105 ,  H04N19/117 ,  H04N19/82 ,  H04N19/60 ,  H04N19/176 ,  G06F1/03

Abstract: The invention relates to a filter for video coding, wherein the filter is configured for processing a block for generation of a filtered block, and wherein the block comprises a plurality of pixels. The filter includes one or more processor configured to: scan a current pixel of the 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 block based on the filtered pixels. The filter is provided allowing improving the efficiency for video coding.

公开(公告)号：US20210127108A1

公开(公告)日：2021-04-29

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: H04N19/117 ,  H04N19/82 ,  H04N19/176 ,  H04N19/61 ,  H04N19/159 ,  H04N19/132 ,  H04N19/124

Abstract: The invention relates to a filter for video coding, wherein the filter is configured for processing a block for generation of a filtered block, and wherein the block comprises a plurality of pixels. The filter includes one or more processor configured to: scan a current pixel of the 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 block based on the filtered pixels. The filter is provided allowing improving the efficiency for video coding.

公开(公告)号：US20210092433A1

公开(公告)日：2021-03-25

申请号：US17111376

申请日：2020-12-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang Chen ,  Yin Zhao ,  Haitao Yang ,  Jianle Chen

IPC: H04N19/513 ,  H04N19/176 ,  H04N19/189

Abstract: This application provides a motion vector obtaining method and apparatus. The method includes: determining a target offset vector of a block and identifier information of a target picture, wherein the block comprises at least one sub-block; determining a location of the sub-block; determining, as a target location coordinate value of a collocated sub-block, a location coordinate value obtained by performing a clipping operation on an initial location coordinate value in a range, wherein the initial location coordinate value is based on the location of the sub-block and the target offset vector; and obtaining a motion vector of the sub-block based on a motion vector corresponding to the target location coordinate value. Thus, a range of the target offset vector is limited, so that a quantity of memory read times can be reduced in a process of obtaining the motion vector of the collocated sub-block.