公开(公告)号：US20200260122A1

公开(公告)日：2020-08-13

申请号：US16859753

申请日：2020-04-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： ALEXEY KONSTANTINOVICH FILIPPOV ,  Alexander Alexandrovich KARABUTOV ,  Shan LIU ,  VASILY ALEXEEVICH RUFITSKIY

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

Abstract: An apparatus and a method for image coding with asymmetric partitioning are disclosed. Instead of a conventional approach of using partitioning mechanisms such as QTBT and Multi-Type Tree (MTT), an asymmetric partitioning mechanism that can provide a good performance/complexity tradeoff is introduced. This allows constraining parameters of the asymmetric partitioning mechanism to exclude modes that appear not frequently, thereby allowing keeping encoder-side complexity low and avoiding signaling overhead.

公开(公告)号：US20200252609A1

公开(公告)日：2020-08-06

申请号：US16854665

申请日：2020-04-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： ALEXEY KONSTANTINOVICH FILIPPOV ,  Alexander Alexandrovich KARABUTOV ,  Shan LIU ,  VASILY ALEXEEVICH RUFITSKIY

IPC: H04N19/119 ,  H04N19/33 ,  H04N19/105 ,  H04N19/176

Abstract: A picture encoding apparatus configured to hierarchically partition a block of picture data into sub-blocks; determine that a sub-block being coded belongs to an unequally-sized partitioned block; prepare a list of neighboring blocks for the sub-block of the unequally-sized partitioned block based on a size of the sub-block of the unequally-sized partitioned block and a partitioning type of at least one neighboring block of the unequally-sized partitioned block; and derive a context model that is used to encode split information of the sub-block of the unequally-sized partitioned block into a bit stream based on the prepared list of neighboring blocks.

公开(公告)号：US20190313117A1

公开(公告)日：2019-10-10

申请号：US16448476

申请日：2019-06-21

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： ALEXEY KONSTANTINOVICH FILIPPOV ,  VASILY ALEXEEVICH RUFITSKIY

IPC: H04N19/593 ,  H04N19/176 ,  H04N19/182 ,  H04N19/70

Abstract: An intra-prediction apparatus extends a set of predetermined directional intra-prediction modes of a rectangular video coding block. The intra-prediction apparatus determines an aspect ratio of the rectangular video coding block, and determines a complementary angle range based on the aspect ratio. The apparatus then selects a complementary direction within the complementary directional range, and adds an extension directional intra-prediction mode associated with the complementary direction to the set of predetermined directional intra-prediction modes. Based on the extension directional intra-prediction mode, the apparatus intra-predicts pixel values of pixels of the rectangular video coding block.