公开(公告)号：US20200099948A1

公开(公告)日：2020-03-26

申请号：US16697854

申请日：2019-11-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yu Han ,  Jicheng An ,  Jianhua Zheng

IPC: H04N19/44 ,  H04N19/159 ,  H04N19/11 ,  H04N19/105 ,  H04N19/132

Abstract: A method for decoding an intra-frame prediction mode includes determining a first mode set comprising intra-frame prediction modes of available neighborhood reconstruction units in preset positions of the current to-be-decoded unit and at least one non-directional prediction mode, and parsing the bitstream to obtain a second identifier used to indicate a candidate intra-frame prediction mode in the first mode set that is used as the intra-frame prediction mode of the current to-be-decoded unit, and a codeword length of the second identifier indicating one of the at least one non-directional prediction mode as the intra-frame prediction mode of the current to-be-decoded unit is not less than a codeword length of any second identifier indicating an intra-frame prediction mode of an available neighborhood reconstruction unit in a preset position of the current to-be-decoded unit as the intra-frame prediction mode of the current to-be-decoded unit.

公开(公告)号：US20190313092A1

公开(公告)日：2019-10-10

申请号：US16448358

申请日：2019-06-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yu Han ,  Jicheng An ,  Jianhua Zheng

IPC: H04N19/109 ,  H04N19/503 ,  H04N19/61 ,  H04N19/186 ,  H04N19/169 ,  G06F17/16

Abstract: A chrominance prediction method includes determining a target luminance prediction mode of the luminance processing unit from preset candidate luminance prediction modes, where a difference between a predicted luminance value of the luminance processing unit corresponding to any target luminance prediction mode and a reconstructed luminance value of the luminance processing unit is less than or equal to a difference between a predicted luminance value of the luminance processing unit corresponding to each candidate luminance prediction mode excluding the target luminance prediction mode and the reconstructed luminance value of the luminance processing unit, and obtaining a predicted chrominance value of the to-be-processed chrominance unit, where a candidate chrominance prediction mode set of the to-be-processed chrominance unit includes the target luminance prediction mode.

公开(公告)号：US11197018B2

公开(公告)日：2021-12-07

申请号：US16728264

申请日：2019-12-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jicheng An ,  Yu Han ,  Jianhua Zheng

IPC: H04N19/52 ,  H04N19/58

Abstract: A method for predicting motion information of a picture block includes: obtaining motion information of at least one determined motion vector picture block in a picture in which a to-be-processed picture block is located, where the at least one determined motion vector picture block includes a determined motion vector picture block discontiguous to the to-be-processed picture block; obtaining first identification information, where the first identification information is used to determine target motion information from the motion information of the at least one determined motion vector picture block; and predicting motion information of the to-be-processed picture block based on the target motion information.

公开(公告)号：US10819999B2

公开(公告)日：2020-10-27

申请号：US16697854

申请日：2019-11-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yu Han ,  Jicheng An ,  Jianhua Zheng

IPC: H04N19/44 ,  H04N19/105 ,  H04N19/11 ,  H04N19/132 ,  H04N19/159

Abstract: A method for decoding an intra-frame prediction mode includes determining a first mode set comprising intra-frame prediction modes of available neighborhood reconstruction units in preset positions of the current to-be-decoded unit and at least one non-directional prediction mode, and parsing the bitstream to obtain a second identifier used to indicate a candidate intra-frame prediction mode in the first mode set that is used as the intra-frame prediction mode of the current to-be-decoded unit, and a codeword length of the second identifier indicating one of the at least one non-directional prediction mode as the intra-frame prediction mode of the current to-be-decoded unit is not less than a codeword length of any second identifier indicating an intra-frame prediction mode of an available neighborhood reconstruction unit in a preset position of the current to-be-decoded unit as the intra-frame prediction mode of the current to-be-decoded unit.