公开(公告)号：US12175715B2

公开(公告)日：2024-12-24

申请号：US17127329

申请日：2020-12-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Vladyslav Zakharchenko ,  Birendra Kathariya ,  Jianle Chen

IPC: G06T9/40 ,  H04N19/184

Abstract: An apparatus comprises a processor configured to obtain a point cloud, make a choice between octree encoding or quadtree encoding of a parent node, and encode the parent node into a bitstream based on the choice; and a transmitter coupled to the processor and configured to transmit the bitstream. An apparatus comprises a receiver configured to receive a bitstream; and a processor coupled to the receiver and configured to parse from the bitstream a first parameter indicating a depth of PCC, decode first nodes before the depth using octree decoding, parse from the bitstream a second parameter indicating a node coding mode for second nodes at and after the depth, and decode the second nodes based on the second parameter.

公开(公告)号：US20240422364A1

公开(公告)日：2024-12-19

申请号：US18820059

申请日：2024-08-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianle Chen ,  Yin Zhao

IPC: H04N19/96 ,  H04N19/122 ,  H04N19/14 ,  H04N19/184 ,  H04N19/70

Abstract: A method of decoding includes partitioning a rectangular transform tree node (TTN) using either a vertical binary tree split or a horizontal binary tree split to generate square child TTNs when a maximum transform unit (TU) size for the TTN is smaller than either dimension of the TTN. The method further includes partitioning the child TTNs using a quadtree split to generate transform units (TUs) when the first child TTN dimension and the second child TTN dimension are larger than the maximum TU size, determining that the child TTNs are TUs when the first child TTN dimension and the second child TTN dimension are less than or equal to the maximum TU size, applying the TUs to transform coefficients to generate residuals, and generating a reconstructed block based on the residuals.

公开(公告)号：US20240397079A1

公开(公告)日：2024-11-28

申请号：US18675853

申请日：2024-05-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianle Chen ,  FNU Hendry ,  Ye-Kui Wang

IPC: H04N19/52 ,  H04N19/105 ,  H04N19/132 ,  H04N19/136 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/33 ,  H04N19/46 ,  H04N19/577

Abstract: A method of decoding includes determining, by the video decoder, whether a resolution of a current picture being decoded is the same as the resolution of reference pictures identified by a reference picture list associated with the current picture; enabling, by the video decoder, decoder-side motion vector refinement (DMVR) for a current block of the current picture when the resolution of the current picture is determined to be the same as the resolution of each of the reference pictures; disabling, by the video decoder, the DMVR for the current block of the current picture when the resolution of the current picture is determined to be different than the resolution of either of the reference pictures; and refining, by the video decoder, motion vectors corresponding to the current block using the DMVR when the DMVR flag is enabled for the current block.

公开(公告)号：US20240357094A1

公开(公告)日：2024-10-24

申请号：US18406193

申请日：2024-01-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/117 ,  H04N19/176 ,  H04N19/186 ,  H04N19/82 ,  H04N19/96

CPC classification number: H04N19/117 ,  H04N19/176 ,  H04N19/186 ,  H04N19/82 ,  H04N19/96

Abstract: A method of filtering a sample value of a picture includes, when an integer t is less than k and an integer j is in the range of 1 to m, generating, with an integer i in the range of 1 to k−t−1, a first filtered sample value by applying a first filter to the value of the sample p(i,j), where the first filter is supported by a first set of filter support samples, which does not comprise any samples p(i′,j′) with row index i′ greater than k−t−1, and generating, with i in the range of k−t to k, a second filtered sample value by applying a second filter to the value of the sample p(i,j), the second filter is supported by a second set of filter support samples, which does not comprise any samples p(i′,j′) with row index i′ less than k−t.

公开(公告)号：US12118757B2

公开(公告)日：2024-10-15

申请号：US17857894

申请日：2022-07-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jeffrey Moguillansky ,  Vladyslav Zakharchenko ,  Jianle Chen

IPC: H04N19/70 ,  G06T9/00

CPC classification number: G06T9/00 ,  H04N19/70

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising a plurality of two dimensional (2D) patches in an atlas frame and a camera offset for a camera. The patches are decoded and converted to a three dimensional (3D) patch coordinate system to obtain a point cloud frame. An offset matrix is determined based on the camera offset. The offset is then applied matrix to the point cloud frame.

公开(公告)号：US12108048B2

公开(公告)日：2024-10-01

申请号：US18318731

申请日：2023-05-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang Chen ,  Haitao Yang ,  Jianle Chen ,  Jiali Fu

IPC: H04N19/139 ,  H04N19/119 ,  H04N19/176 ,  H04N19/61

CPC classification number: H04N19/139 ,  H04N19/119 ,  H04N19/176 ,  H04N19/61

Abstract: A motion vector prediction method includes parsing a bitstream to obtain an index value of a candidate motion vector list and constructing the candidate motion vector list that includes. candidate motion vectors of K control points of a current block. The candidate motion vectors of K control points are obtained based on a 2N-parameter affine transform model used for a neighboring block of the current block, where N and K are integers greater than or equal to 2 and less than or equal to 4 with N not being equal to K. The method further includes determining, in the candidate motion vector list, target candidate motion vectors of the K control points based on the index value and obtaining a predicted motion vector of each subblock of the current block based on the target candidate motion vectors of the K control points.

公开(公告)号：US20240314309A1

公开(公告)日：2024-09-19

申请号：US18614636

申请日：2024-03-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/117 ,  H04N19/176

CPC classification number: H04N19/117 ,  H04N19/176

Abstract: A method of video coding, wherein the method comprises inter-prediction processing of a first block, wherein the inter-prediction processing comprises subpixel interpolation filtering of samples of a reference block; intra-prediction processing of a second block, wherein the intra-prediction processing comprises subpixel interpolation filtering of reference samples; wherein the method further comprises selecting interpolation filter coefficients for the subpixel interpolation filtering based on a subpixel offset between integer reference sample positions and fractional reference samples' positions, wherein for the same subpixel offsets the same interpolation filter coefficients are selected for intra-prediction processing and inter-prediction processing.

公开(公告)号：US20240305807A1

公开(公告)日：2024-09-12

申请号：US18670305

申请日：2024-05-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yin Zhao ,  Haitao Yang ,  Jianle Chen

IPC: H04N19/44 ,  H04N19/136 ,  H04N19/176 ,  H04N19/625

CPC classification number: H04N19/44 ,  H04N19/136 ,  H04N19/176 ,  H04N19/625

Abstract: A video decoding method includes determining a usage of an SVT-vertical (V) or an SVT-horizontal (H) for a residual block; determining a transform block position of a transform block of the residual block; determining a transform type of the transform block, wherein the transform type indicates a horizontal transform and a vertical transform for the transform block, wherein at least one of the horizontal transform or the vertical transform is a discrete sine transform (DST)-7; and reconstructing the residual block based on the transform type, the transform block position, and transform coefficients of the transform block.

公开(公告)号：US12088799B2

公开(公告)日：2024-09-10

申请号：US17369024

申请日：2021-07-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H01L29/94 ,  H04N19/11 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196

CPC classification number: H04N19/11 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196

Abstract: A method of coding implemented by a decoding device, comprising: setting a value of candidate intra prediction mode of a current block to be a default value, wherein the current block is predicted using an intra prediction mode but not a Matrix-based Intra Prediction (MIP) mode and a neighboring block adjacent to the current block is used to derive the value of candidate intra prediction mode of the current block and is predicted using MIP mode; obtaining a value of the intra prediction mode of the current block according to the default value.

公开(公告)号：US12069284B2

公开(公告)日：2024-08-20

申请号：US17701011

申请日：2022-03-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fnu Hendry ,  Ye-Kui Wang ,  Jianle Chen

IPC: H04N19/44 ,  H04N19/172 ,  H04N19/46 ,  H04N19/70

CPC classification number: H04N19/44 ,  H04N19/172 ,  H04N19/46 ,  H04N19/70

Abstract: A method comprises: receiving, by a video decoder, a video bitstream comprising an RPL flag, wherein the RPL flag equal to a first value specifies that RPL signaling is present in a PH, and wherein the RPL flag equal to a second value specifies that RPL signaling is not present in the PH and may be present in slice headers; and decoding, by the video decoder using the RPL flag, a coded picture to obtain a decoded picture. A comprises: receiving, by a video decoder, a video bitstream comprising an SAO flag, wherein the SAO flag specifies that SAO information may be present or is not present in a PH or specifies that the SAO information may be present or is not present in slice headers; and decoding, by the video decoder using the SAO flag, a coded picture to obtain a decoded picture.