公开(公告)号：US20210168399A1

公开(公告)日：2021-06-03

申请号：US17121263

申请日：2020-12-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yongbing LIN ,  Xiaozhen ZHENG

IPC: H04N19/593 ,  H04N19/176 ,  H04N19/11 ,  H04N19/196

Abstract: A method for processing an intra prediction mode includes: determining whether an intra prediction mode of each neighboring block in multiple neighboring blocks of a current block is applicable to the current block; and obtaining multiple mapped intra prediction modes of the current block according to a result of the determining, if it is determined that an intra prediction mode of a neighboring block is applicable to the current block, setting the intra prediction mode of the neighboring block as a mapped intra prediction mode of the current block, and if it is determined that the intra prediction mode of the neighboring block is not applicable to the current block, setting a specific intra prediction mode as the mapped intra prediction mode of the current block.

公开(公告)号：US20210067777A1

公开(公告)日：2021-03-04

申请号：US17094560

申请日：2020-11-10

Applicant: Huawei Technologies Co., Ltd. ,  Tsinghua University

Inventor： Changcai LAI ,  Xiaoran CAO ,  Yongbing LIN ,  Lingzhi LIU ,  Yun HE

IPC: H04N19/119 ,  H04N19/147 ,  H04N19/124 ,  H04N19/172

Abstract: An encoding method with multiple image block division manners is disclosed, including: determining a division manner and a division direction of an image block; dividing the image block to obtain image subblocks sequentially arranged horizontally or vertically; determining whether the image subblocks need subdivision, and if subdivision is not needed, predicting the encoding object in the frame according to the image subblocks, to obtain residual data; performing transformation, quantization, and entropy encoding for the residual data so as to obtain coded residual data; and writing the division manner of the image block, the division direction of the image block, an identifier indicating whether the image subblocks need subdivision, and the coded residual data into a bitstream. By applying the encoding method, better prediction accuracy can be achieved when the image block presents a small change of pixel value in the horizontal or vertical direction.

公开(公告)号：US20190098336A1

公开(公告)日：2019-03-28

申请号：US16201580

申请日：2018-11-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yongbing LIN ,  Xiaozhen ZHENG

IPC: H04N19/593 ,  H04N19/11 ,  H04N19/196 ,  H04N19/176

Abstract: A method for processing an intra prediction mode includes: determining whether an intra prediction mode of each neighboring block in multiple neighboring blocks of a current block is applicable to the current block; and obtaining multiple mapped intra prediction modes of the current block according to a result of the determining, if it is determined that an intra prediction mode of a neighboring block is applicable to the current block, setting the intra prediction mode of the neighboring block as a mapped intra prediction mode of the current block, and if it is determined that the intra prediction mode of the neighboring block is not applicable to the current block, setting a specific intra prediction mode as the mapped intra prediction mode of the current block.

公开(公告)号：US20170353736A1

公开(公告)日：2017-12-07

申请号：US15684352

申请日：2017-08-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yongbing LIN ,  Xiaozhen ZHENG

IPC: H04N19/593 ,  H04N19/11 ,  H04N19/176 ,  H04N19/196

CPC classification number: H04N19/593 ,  H04N19/11 ,  H04N19/176 ,  H04N19/196

Abstract: A method and an apparatus for processing an intra prediction mode is disclosed. The method includes: determining whether an intra prediction mode of each neighboring block in multiple neighboring blocks of a current block is applicable to the current block; and obtaining multiple mapped intra prediction modes of the current block according to a result of the determining, if it is determined that an intra prediction mode of a neighboring block is applicable to the current block, setting the intra prediction mode of the neighboring block as a mapped intra prediction mode of the current block, and if it is determined that the intra prediction mode of the neighboring block is not applicable to the current block, setting a specific intra prediction mode as the mapped intra prediction mode of the current block.