-
公开(公告)号:US20210314604A1
公开(公告)日:2021-10-07
申请号:US17349557
申请日:2021-06-16
Applicant: Huawei Technologies Co., Ltd.
Inventor: Semih ESENLIK , Anand Meher KOTRA , Zhijie ZHAO , Han GAO
IPC: H04N19/56 , H04N19/513 , H04N19/55
Abstract: The embodiments disclosed herein relate to the construction of a search space for determining a motion vector for a current block of a picture in a video sequence. The search space construction is split into in two main stages, wherein a first and a second partial search space are respectively determined. Based on an initial estimate of a motion vector, a first search space is first constructed. A first and a second candidate motion of the first search space are identified according to a cost function. Based on the first and the second candidate motion vectors, a second search space is constructed. The motion vector for the current block is selected from the candidate motion vectors of the first search space and the second search space.
-
公开(公告)号:US20210274168A1
公开(公告)日:2021-09-02
申请号:US17324401
申请日:2021-05-19
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor: Timofey Mikhailovich SOLOVYEV , Semih ESENLIK , Jianle CHEN , Anand Meher KOTRA , Biao WANG , Han GAO
IPC: H04N19/107 , H04N19/119 , H04N19/176
Abstract: The present disclosure provides methods and devices of processing a block according to a merge candidate list, the method comprising: constructing a first list according to motion information of neighboring blocks of a current block; obtaining prediction information of the current block; when the prediction information of the current block indicates that a sub-block prediction is applied to the current block, obtaining a uni-prediction candidate for the current block according to the first list; using, the uni-prediction candidate for the current block to perform inter prediction of the current block. According to embodiment of the present disclosure, the regular merge list can be directly used and there is no need to explicitly generate the uni-prediction merge candidate list for sub-block prediction.
-
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: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.
-
公开(公告)号:US20200260119A1
公开(公告)日:2020-08-13
申请号:US16863986
申请日:2020-04-30
Applicant: Huawei Technologies Co., Ltd.
Inventor: Semih ESENLIK , Anand Meher KOTRA , Zhijie ZHAO , Han GAO
IPC: H04N19/70 , H04N19/46 , H04N19/13 , H04N19/176
Abstract: The present disclosure relates to encoding and decoding of signal and syntax elements to/from a bitstream. In the encoding/decoding, semantics for the syntax elements is derived in accordance with previously decoded signal samples. Such encoding/decoding is applicable for instance to a video or audio signal.
-
公开(公告)号:US20200236351A1
公开(公告)日:2020-07-23
申请号:US16844740
申请日:2020-04-09
Applicant: Huawei Technologies Co., Ltd.
Inventor: Anand Meher KOTRA , Zhijie ZHAO , Semih ESENLIK , Han GAO
IPC: H04N19/109 , H04N19/61 , H04N19/503 , H04N19/176
Abstract: An apparatus is configured to determine an adopted intra prediction mode on the basis of a most probable modes list, a selected modes list and a non-selected modes list having a first portion and a second portion, wherein the adopted intra prediction mode is one of a plurality of intra prediction modes comprising a plurality of angular intra prediction modes for predicting sample values of a current picture block. The apparatus includes a processor configured to generate the first portion of the non-selected modes list by including one or more angular intra prediction modes determined to be close to a respective angular intra prediction mode of the most probable modes list and the selected modes list. The processor is further configured to determine the adopted intra prediction mode.
-
公开(公告)号:US20250142065A1
公开(公告)日:2025-05-01
申请号:US18945236
申请日:2024-11-12
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:US20240357076A1
公开(公告)日:2024-10-24
申请号:US18630359
申请日:2024-04-09
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor: Huanbang CHEN , Han GAO , Haitao YANG
IPC: H04N19/105 , H04N19/132 , H04N19/137 , H04N19/159 , H04N19/176 , H04N19/70
CPC classification number: H04N19/105 , H04N19/132 , H04N19/137 , H04N19/159 , H04N19/176 , H04N19/70
Abstract: The disclosure relates to a method of coding implemented by a decoding device, comprising: obtaining a value of a maximum number of merging motion vector prediction, MVP, candidates for a current block, wherein the current block is predicted using intra block copy, IBC mode; setting a value of a MVP index to zero, when the value of the maximum number of MVP candidates for the current block is equal to one; obtaining a motion vector of the current block according to the MVP index and a candidate list; obtaining prediction samples values of the current block according to the motion vector of the current block.
-
公开(公告)号:US20240015290A1
公开(公告)日:2024-01-11
申请号:US18349988
申请日:2023-07-11
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor: Anand Meher KOTRA , Elena Alexandrovna ALSHINA , Semih ESENLIK , Biao WANG , Han GAO , Roman Igorevich CHERNYAK
IPC: H04N19/124 , H04N19/117 , H04N19/176 , H04N19/186
CPC classification number: H04N19/124 , H04N19/117 , H04N19/176 , H04N19/186
Abstract: A method for deblocking a chroma block edge between a first chroma block of a first image block and a second chroma block of a second image block. The method includes a decision process which includes: determining a first chroma quantization parameter for the first chroma block based on a first luma quantization parameter of a first luma block of the first image block and a chroma QP mapping table for the first chroma block; determining a second chroma quantization parameter for the second chroma block based on a second luma quantization parameter of a second luma block of the second image block and a chroma QP mapping table for the second chroma block; determining an averaged and rounded chroma quantization parameter based on the first chroma quantization parameter and the second chroma quantization parameter; and determining a threshold parameter based on the averaged and rounded chroma quantization parameter.
-
70.
公开(公告)号:US20230319322A1
公开(公告)日:2023-10-05
申请号:US18295986
申请日:2023-04-05
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor: Anand Meher KOTRA , Semih ESENLIK , Jianle CHEN , Biao WANG , Han GAO , Zhijie ZHAO
IPC: H04N19/96 , H04N19/172 , H04N19/52
CPC classification number: H04N19/96 , H04N19/172 , H04N19/52
Abstract: A video processing method, comprising: initializing a HMVP list for a current CTU row when the current CTU is the beginning CTU of a current CTU row; and processing the current CTU row based on the HMVP list. By performing the method, the encoding efficiency and decoding efficiency are improved.
-
-
-
-
-
-
-
-
-