公开(公告)号：US20240333939A1

公开(公告)日：2024-10-03

申请号：US18616964

申请日：2024-03-26

Applicant: Alibaba (China) Co., Ltd.

Inventor： Shuqing Fang ,  Jianhua Chen ,  Yan YE

IPC: H04N19/139 ,  H04N19/156 ,  H04N19/176 ,  H04N19/182 ,  H04N19/48

CPC classification number: H04N19/139 ,  H04N19/156 ,  H04N19/176 ,  H04N19/182 ,  H04N19/48

Abstract: A motion compensation method, includes: acquiring a plurality of matching costs between a to-be-processed block and a plurality of first pixel blocks, the plurality of first pixel blocks corresponding to a plurality of integer pixels within a search range in a reference frame; based on the plurality of matching costs, estimating matching costs between the to-be-processed block and a plurality of second pixel blocks to obtain a plurality of approximate matching costs, the plurality of second pixel blocks corresponding to a plurality of sub-pixels within the search range in the reference frame; and performing motion compensation on the to-be-processed block according to the plurality of matching costs and the plurality of approximate matching costs.

公开(公告)号：US20240323452A1

公开(公告)日：2024-09-26

申请号：US18602449

申请日：2024-03-12

Applicant: Alibaba (China) Co., Ltd.

Inventor： Zhiwei Huang ,  Jianhua Chen ,  Yan Ye

IPC: H04N19/85 ,  H04N19/182

CPC classification number: H04N19/85 ,  H04N19/182

Abstract: Embodiments of the present disclosure provide a pixel value mapping method, including: determining a to-be-processed image and a mapping table corresponding to the to-be-processed image; performing a table lookup on pixel values of multiple pixels in the to-be-processed image according to the mapping table in parallel to obtain mapped values each corresponding to a pixel of the multiple pixels; and determining a mapped image corresponding to the to-be-processed image according to the mapped values obtained based on the table lookup.

公开(公告)号：US20240333958A1

公开(公告)日：2024-10-03

申请号：US18616881

申请日：2024-03-26

Applicant: Alibaba (China) Co., Ltd.

Inventor： Shuqing Fang ,  Jianhua Chen ,  Yan YE

IPC: H04N19/51 ,  H04N19/105 ,  H04N19/176 ,  H04N19/182

CPC classification number: H04N19/51 ,  H04N19/105 ,  H04N19/176 ,  H04N19/182

Abstract: A motion compensation method, includes acquiring a motion vector of an initial search point in a reference frame of an adjacent block to a to-be-processed block in a to-be-processed image and a motion vector of the adjacent block; determining a search range in the reference frame based on the motion vector of the initial search point and the motion vector of the adjacent block; determining a target pixel in the search range; and performing motion compensation on the to-be-processed block based on the motion vector of the target pixel.

公开(公告)号：US20240323369A1

公开(公告)日：2024-09-26

申请号：US18601153

申请日：2024-03-11

Applicant: Alibaba (China) Co., Ltd.

Inventor： Liangwei Yu ,  Jianhua Chen ,  Yan Ye

IPC: H04N19/117 ,  H04N19/105 ,  H04N19/14 ,  H04N19/176 ,  H04N19/82

CPC classification number: H04N19/117 ,  H04N19/105 ,  H04N19/14 ,  H04N19/176 ,  H04N19/82

Abstract: Embodiments of the present disclosure provide a loop filtering method, including: determining a reference image block corresponding to a to-be-processed image block in an adjacent reference frame in a time domain, and predicting the loop filtering enabling probability of the to-be-processed image block based on the result of loop filtering of the reference image block; determining spatial coding information of the to-be-processed image block, the spatial coding information being used to characterize texture complexity of the to-be-processed image block; and making a loop filtering decision for the to-be-processed image block in response to the spatial coding information and the loop filtering enabling probability meeting preset filtering conditions.