公开(公告)号：US11849107B2

公开(公告)日：2023-12-19

申请号：US17478243

申请日：2021-09-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Alexey Konstantinovich Filippov ,  Vasily Alexeevich Rufitskiy ,  Jianle Chen ,  Semih Esenlik ,  Biao Wang ,  Elena Alexandrovna Alshina

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  G06F5/01 ,  G06F17/16

CPC classification number: H04N19/105 ,  G06F5/01 ,  G06F17/16 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

Abstract: A method of intra prediction of a block, comprising obtaining two lines of reconstructed neighboring samples; deriving a set of reference samples based on the two lines of reconstructed neighboring samples; obtaining a set of MIP coefficients based on a intra prediction mode obtained from a bitstream, wherein a MIP coefficient CMIP of the set of MIP coefficients is obtained based on CMIP=vsgn·(q

公开(公告)号：US20230396765A1

公开(公告)日：2023-12-07

申请号：US18451131

申请日：2023-08-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/122 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196 ,  H04N19/61 ,  H04N19/625 ,  G06T9/00 ,  G06T9/40

CPC classification number: H04N19/122 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196 ,  H04N19/61 ,  H04N19/625 ,  G06T9/007 ,  G06T9/40

Abstract: A method of video coding a block of a picture includes: obtaining a residual signal resulting from inter- or intra-picture prediction; inferring use of a DCT2 transform core for a sequence of the residual signal; processing the transformation of the block using the inferred transform core.

公开(公告)号：US20230370587A1

公开(公告)日：2023-11-16

申请号：US18322404

申请日：2023-05-23

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/11 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

CPC classification number: H04N19/11 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

Abstract: A coding apparatus configured to select an intra prediction mode for a current block, encode the selected intra prediction mode using truncated binary coding every time the selected intra prediction mode is a remaining mode, and encode the selected intra prediction mode using N bits when the selected intra prediction mode is included in a first portion from remaining modes and using N+1 bits when the selected intra prediction mode is included in a second portion of the remaining modes.

公开(公告)号：US20230353766A1

公开(公告)日：2023-11-02

申请号：US18338143

申请日：2023-06-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Elena Alexandrovna Alshina ,  Han Gao ,  Semih Esenlik

IPC: H04N19/42 ,  H04N19/132 ,  H04N19/463 ,  H04N19/80 ,  H04N19/187 ,  H04N19/172 ,  H04N19/85

CPC classification number: H04N19/42 ,  H04N19/132 ,  H04N19/463 ,  H04N19/80 ,  H04N19/187 ,  H04N19/172 ,  H04N19/85

Abstract: A method and an apparatus for encoding a picture and decoding a bitstream representing a matrix using a neural network is provided. The method includes obtaining a resizing method out of a plurality of resizing methods. The resizing method is applied to resize an input of size S to a size S. The resized input is processed by the neural network, wherein the neural network comprises one or more downsampling layers. Subsequently, the method provides an output of the neural network, the output having a size P that is smaller than S in the at least one dimension

公开(公告)号：US11805270B2

公开(公告)日：2023-10-31

申请号：US18158313

申请日：2023-01-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/513 ,  H04N19/57

CPC classification number: H04N19/513 ,  H04N19/57

Abstract: The present disclosure relates to motion vector refinement. As a first step, an initial motion vector and a template for the block are obtained. Then, the refinement of the initial motion vector is determined by template matching with said template in a search space. The search space is located on a position given by the initial motion vector and includes one or more fractional sample positions, wherein each of the fractional sample positions belonging to the search space is obtained by interpolation filtering with a filter of a predefined tap-size assessing integer samples only within a window, said window being formed by integer samples accessible for the template matching in said search space.

公开(公告)号：US20230239489A1

公开(公告)日：2023-07-27

申请号：US18158313

申请日：2023-01-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/513 ,  H04N19/57

CPC classification number: H04N19/513 ,  H04N19/57

Abstract: The present disclosure relates to motion vector refinement. As a first step, an initial motion vector and a template for the block are obtained. Then, the refinement of the initial motion vector is determined by template matching with said template in a search space. The search space is located on a position given by the initial motion vector and includes one or more fractional sample positions, wherein each of the fractional sample positions belonging to the search space is obtained by interpolation filtering with a filter of a predefined tap-size assessing integer samples only within a window, said window being formed by integer samples accessible for the template matching in said search space.

公开(公告)号：US11647182B2

公开(公告)日：2023-05-09

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

CPC classification number: 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：US11641466B2

公开(公告)日：2023-05-02

申请号：US17190231

申请日：2021-03-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/119 ,  H04N19/176 ,  H04N19/70 ,  H04N19/96

Abstract: The present disclosure relates to methods and devices to be employed for encoding and decoding of image or video signal. They include determination of whether or not the size of a current block is larger than a minimum allowed quadtree leaf node size. If the size of the current block is not larger than the minimum allowed quadtree leaf node size, multi-type tree splitting is applied to the current block. The minimum allowed quadtree leaf node size is not larger than a maximum allowed binary tree root node size or the minimum allowed quadtree leaf node size is not larger than a maximum allowed ternary tree root node size.

公开(公告)号：US11589048B2

公开(公告)日：2023-02-21

申请号：US17318071

申请日：2021-05-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianle Chen ,  Yin Zhao ,  Semih Esenlik

IPC: H04N19/119 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/169 ,  H04N19/46 ,  H04N19/96

Abstract: A method of decoding a coded video bitstream implemented by a video decoder. The method includes determining a split mode for a coding tree unit (CTU) in an encoded bitstream, where the split mode is one of triple tree (TT), vertical binary tree (BT), and horizontal BT; marking a coding unit (CU) from the CTU as not to be predicted by intra prediction when one of three conditions is met; parsing the encoded bitstream to obtain a prediction unit and residual information for the CU from the CTU; and reconstructing the CU based on the prediction unit and the residual information when the CU has been marked.

公开(公告)号：US11589046B2

公开(公告)日：2023-02-21

申请号：US17141121

申请日：2021-01-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/625 ,  H04N19/70

Abstract: The present disclosure provides methods and devices. A video method of coding implemented by a decoding device, comprising: when a prediction mode of a current coding block is intra prediction, and the current coding block is processed by using Intra sub-partition coding mode, determining whether a width of a current transform block is larger than or equal to a first threshold or not, and whether the width of the current transform block is smaller than or equal to a second threshold or not, the current transform block corresponding to the current coding block; when the width of the current transform block is larger than or equal to the first threshold and the width of the current transform block is smaller than or equal to the second threshold, performing transform process on the current transform block, wherein a transform core based on DST 7 is used on horizontal direction transform.