公开(公告)号：US20210203980A1

公开(公告)日：2021-07-01

申请号：US17190025

申请日：2021-03-02

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/56 ,  H04N19/176 ,  H04N19/96 ,  H04N19/109 ,  H04N19/105

Abstract: An apparatus and method for marking availability of a candidate coding block for merge estimation of a current coding block within a coding tree unit (CTU). The candidate block may be marked as unavailable if a splitting depth of the current coding block is equal to or larger than a predetermined threshold and a first location of the candidate block and a second location of the current block are included in a same merge estimation region (MER). Otherwise, the candidate block is marked as available. A candidate block may be marked as unavailable also, when a parent block “parentCurr” of the current block and a parent block “parentCand” of the candidate block, with both parent blocks obtained by splitting, are the same block and when the size of the parentCand is smaller than a threshold.

公开(公告)号：US20210144373A1

公开(公告)日：2021-05-13

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 ,  H04N19/625 ,  H04N19/70 ,  H04N19/176

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.

公开(公告)号：US10986336B2

公开(公告)日：2021-04-20

申请号：US17016128

申请日：2020-09-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04N19/46 ,  H04N19/167 ,  H04N19/11 ,  H04N19/593 ,  H04N19/176

Abstract: Devices and methods for Intra prediction are provided. The method includes: obtaining a value of an indication information of a current block. When the value of the indication information indicates the intra prediction mode of the current block is not comprised in the set of most probable modes, deriving the intra prediction mode IntraPredModeY[xCb][yCb] of the current block by the following ordered steps: i. IntraPredModeY[xCb][yCb] is set equal to intra_luma_mpm_remainder[xCb][yCb], ii. The value of IntraPredModeY[xCb][yCb] is incremented by one. The method can improve the efficiency to determine the intra prediction mode of the current block.

公开(公告)号：US10972725B2

公开(公告)日：2021-04-06

申请号：US17002741

申请日：2020-08-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

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

Abstract: A decoding method and a decoder for decoding a current block of a video is provided, wherein the decoding method comprises: determining a set of Most Probable Modes (MPMs) for the current block. When at least one condition is satisfied, the set of MPMs includes a Planar mode, 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 an 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：US20210014498A1

公开(公告)日：2021-01-14

申请号：US17033905

申请日：2020-09-27

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

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

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

Abstract: A deblocking filter of an image processing device is provided. The deblocking filter is used in an image coding process, for deblocking a block edge between a first coding block and a second coding block of an image. The first block has SA samples perpendicular to the block edge by N samples parallel to the block edge, and the second block has SB samples perpendicular to the block edge by N samples parallel to the block edge. No more than IA samples of the first coding block are used as first filter input values, and no more than IB samples of the second coding block are used as second filter input values. No more than MA samples of the first coding block are modified as first filter output values, and no more than MB samples of the second coding block are modified as second filter output values.

公开(公告)号：US20200236387A1

公开(公告)日：2020-07-23

申请号：US16843662

申请日：2020-04-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: 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.