公开(公告)号：US20210084299A1

公开(公告)日：2021-03-18

申请号：US17107318

申请日：2020-11-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Han GAO ,  Zhijie ZHAO ,  Semih ESENLIK ,  Anand Meher KOTRA ,  Jianle CHEN

IPC: H04N19/119 ,  H04N19/96 ,  H04N19/176 ,  H04N19/184

Abstract: The present disclosure provides apparatuses and methods for splitting an image into coding units. An image is divided into coding tree units (CTUs) which are hierarchically partitioned. Hierarchical partitioning includes multi-type partitioning such as binary tree or quad tree splitting. For CTUs completely within the image and CTUs on the boundary, respective multi-type partition depths are chosen. The present disclosure provides for multi-type partitioning flexibility in a boundary portion of the image.

公开(公告)号：US20200382799A1

公开(公告)日：2020-12-03

申请号：US16996530

申请日：2020-08-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Roman Igorevich CHERNYAK ,  Sergey Yurievich IKONIN ,  Jianle CHEN

IPC: H04N19/186 ,  H04N19/184 ,  H04N19/66 ,  H04N19/44 ,  H04N19/70 ,  H04N19/119 ,  H04N19/176

Abstract: The present disclosure relates to decoding and encoding methods as well as to decoding and encoding apparatuses and to a program. In particular, a partitioning type of a subject coding unit, CU, is determined. The partitioning type is either a single partitioning type, in which a subject coding unit is partitioned into a single CU including one luma coding block, CB, and two chroma CBs, or a separate partitioning type, in which a subject coding unit is partitioned into a separate luma CU including a luma CB only and a chroma CU including two chroma CBs only. Based on the partitioning type of the subject CU, the subject CU and an associated palette coding information are decoded from a bitstream (in case of the decoding method/apparatus) or inserted into the bitstream (in case of the encoding method/apparatus).

公开(公告)号：US20200382768A1

公开(公告)日：2020-12-03

申请号：US16947840

申请日：2020-08-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Anand Meher KOTRA ,  Biao WANG ,  Semih ESENLIK ,  Jianle CHEN ,  Zhijie ZHAO ,  Han GAO

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/169

Abstract: A method for constructing a most probable mode (MPM) list for prediction process corresponding to video block is provided. The method includes determining whether a left block of a current coding block is available, in response to determining that the left block of the current coding block is available, adding an intra prediction mode of the left block into an MPM list; determining whether an above block of the current coding block is available, in response to determining that the above block of the current coding block is available, adding an intra prediction mode of the above block into the MPM list; adding an offset to the prediction mode of the left block to obtain a new prediction mode; and adding the above-offset prediction mode into the MPM list when the above-offset prediction mode is not in the MPM list. The MPM list is used to improve coding efficiency.