公开(公告)号：US11601653B2

公开(公告)日：2023-03-07

申请号：US17345449

申请日：2021-06-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Alexey Konstantinovich Filippov ,  Vasily Alexeevich Rufitskiy ,  Jianle Chen

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

Abstract: Apparatuses and methods for intra predicting a block are described. The method of intra predicting a current block can include obtaining a predicted sample value from one or more reference sample values by using an intra prediction mode, obtaining at least one additional reference sample value in accordance with the intra prediction mode, and obtaining a thresholded additional reference sample value based on the additional reference sample value. The method can also include calculating an additional value from the thresholded additional reference sample value, multiplying the predicted sample value by a sample weighting factor, resulting in a weighted predicted sample value, adding the additional value to the weighted predicted sample value, resulting in a non-normalized predicted sample value, and normalizing the non-normalized predicted sample value, resulting in a normalized predicted sample values. The accuracy for the intra prediction is thus increased.

公开(公告)号：US11553174B2

公开(公告)日：2023-01-10

申请号：US17328352

申请日：2021-05-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Alexey Konstantinovich Filippov ,  Vasily Alexeevich Rufitskiy ,  Jianle Chen

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

Abstract: The present disclosure provides methods and devices of intra predicting a block of a picture. The method comprises for a sample of the block: obtaining a predicted sample value from one or more reference sample values by performing intra-prediction using a DC intra-prediction mode; multiplying the predicted sample value by a sample weighting factor to produce a weighted predicted sample value; adding an additional value to the weighted predicted sample value to produce a non-normalized predicted sample value; and normalizing the non-normalized predicted sample value by an arithmetic right shift; wherein the sample weighting factor is ((2

公开(公告)号：US11539962B2

公开(公告)日：2022-12-27

申请号：US17205340

申请日：2021-03-18

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/157 ,  H04N19/176 ,  H04N19/184 ,  H04N19/70 ,  H04N19/96

Abstract: A decoding method for decoding an encoded picture which is partitioned into coding tree blocks which are further partitioned into coding blocks with different sizes, comprises parsing a first indication from the sequence parameter set (SPS)/picture parameter set (PPS)/slice header/tile header of a bit stream containing the encoded picture, determining the partition mode of the coding tree blocks, which are confined by block size restriction parameter and partition depth restriction parameter included in the SPS/PPS/slice header/tile header when the first indication is first value, or determining the partition mode of the multiple coding tree blocks, which are confined by default by block size restriction parameter and default partition depth restriction parameter when the first indication is second value or not presented in the SPS/PPS/slice header/tile header, and partitioning the coding tree blocks into the coding blocks according to the partition mode, and decoding the coding blocks.

公开(公告)号：US11539953B2

公开(公告)日：2022-12-27

申请号：US17188940

申请日：2021-03-01

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/122 ,  H04N19/119 ,  H04N19/176 ,  H04N19/44 ,  H04N19/60

Abstract: A method for boundary partition of a current block is provided. The method includes obtaining a partition indicator from a received bitstream; determining whether the partition indicator indicates that the current block is to be split and whether the current block is a boundary block; and performing a non-inverse transform operation on an inside part of the current block when the partition indicator indicates that the current block is not to be split and the current block is a boundary block, wherein the inside part of the block is located within the picture. For the boundary block which is determined not to be split, a non-inverse transform operation is chosen. This avoids a normal inverse transform on the residuals of the inside part (within the picture) of the current block in the decoder, so number of blocks for the inverse transformation is decreased, and decoding complexity is thus reduced.

公开(公告)号：US11523129B2

公开(公告)日：2022-12-06

申请号：US17227821

申请日：2021-04-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yin Zhao ,  Haitao Yang ,  Jianle Chen

IPC: H04N19/44 ,  H04N19/12 ,  H04N19/176 ,  H04N19/61 ,  H04N19/625 ,  H04N19/124 ,  H04N19/184 ,  H04N19/51

Abstract: A video decoding method, including: parsing a received bitstream to obtain prediction information of a coding unit (CU); obtaining a target transform mode of a residual transform unit (TU); parsing the received bitstream to obtain transform coefficients of the residual TU; applying an inverse quantization to the transform coefficients of the residual TU to obtain dequantized coefficients; applying, based on the target transform mode, an inverse transform to the dequantized coefficients to obtain a residual block of the residual TU; obtaining a prediction block of the CU based on the prediction information; obtaining a video block based on the residual block and the prediction block; and outputting a video sequence including a video frame that includes the video block.

公开(公告)号：US20220353532A1

公开(公告)日：2022-11-03

申请号：US17865376

申请日：2022-07-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Vladyslav Zakharchenko ,  Jianle Chen ,  Jeffrey Moguillansky

IPC: H04N19/597 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46 ,  G06T17/20 ,  G06T19/00 ,  G06T15/00 ,  G06T1/20

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 three-dimensional (3D) bounding box scale. The 2D patches are decoded. A point cloud is reconstructed by converting the 2D patches to a 3D patch coordinate system defined by each projection plane of the 3D bounding box. The 3D bounding box scale is applied to a 3D bounding box.

公开(公告)号：US11445181B2

公开(公告)日：2022-09-13

申请号：US17205350

申请日：2021-03-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Alexey Konstantinovich Filippov ,  Vasily Alexeevich Rufitskiy ,  Jianle Chen

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/423

Abstract: A method for constructing a Most Probable Mode (MPM) list includes classifying each intra prediction mode derived from a neighboring block either as a valid or invalid subject to the mode direction and the position of its source block. Valid and invalid modes are considered most and least probable modes, respectively.

公开(公告)号：US20220264135A1

公开(公告)日：2022-08-18

申请号：US17585793

申请日：2022-01-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiang Ma ,  Haitao Yang ,  Huanbang Chen ,  Jianle Chen

IPC: H04N19/46 ,  H04N19/132 ,  H04N19/159 ,  H04N19/174 ,  H04N19/51 ,  H04N19/70

Abstract: A method of determining one or more candidate prediction modes, the method comprises deriving, by a processor, a first indicator by parsing a bitstream, wherein the first indicator specifies whether any affine model is a candidate motion model for an image block in a preset area; determining, by the processor, that the first indicator is set to 1; deriving, by the processor and based on the determination that the first indicator is set to 1, a second indicator by parsing the bitstream, wherein the second indicator specifies whether a 6-parameter affine model is a candidate motion model for the image block; and determining, by the processor, one or more candidate prediction modes for the image block based on the first indicator and the second indicator.

公开(公告)号：US11405612B2

公开(公告)日：2022-08-02

申请号：US17142170

申请日：2021-01-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Alexey Konstantinovich Filippov ,  Jianle Chen ,  Vasily Alexeevich Rufitskiy

IPC: 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：US20220239954A1

公开(公告)日：2022-07-28

申请号：US17698705

申请日：2022-03-18

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/86 ,  H04N19/82 ,  H04N19/176

Abstract: A method implemented by a video decoder and comprising: receiving, by the video decoder, a video bitstream comprising a picture and loop_filter_across_subpic_enabled_flag, wherein the picture comprises a subpicture; and applying a deblocking filter process to all subblock edges and transform block edges of the picture except edges that coincide with boundaries of the subpicture when loop_filter_across_subpic_enabled_flag is equal to 0. A method implemented by a video decoder and comprising: receiving, by the video decoder, a video bitstream comprising a picture, EDGE_VER, and loop_filter_across_subpic_enabled_flag, wherein the picture comprises a subpicture; and setting filterEdgeFlag to 0 if edgeType is equal to the EDGE_VER, a left boundary of a current coding block is a left boundary of the subpicture, and the loop_filter_across_subpic_enabled_flag is equal to 0.