公开(公告)号：US20240223796A1

公开(公告)日：2024-07-04

申请号：US18390238

申请日：2023-12-20

Applicant: GOOGLE LLC

Inventor： Debargha Mukherjee ,  Mohammed Golam Sarwer ,  Rachel Barker ,  Jianle Chen ,  Xiang Li

IPC: H04N19/52 ,  H04N19/109 ,  H04N19/139 ,  H04N19/17 ,  H04N19/176 ,  H04N19/184

CPC classification number: H04N19/52 ,  H04N19/109 ,  H04N19/139 ,  H04N19/17 ,  H04N19/176 ,  H04N19/184

Abstract: Coding using local global prediction modes with projected motion fields includes identifying a current frame, identifying a current reference frame, obtaining a projected motion field, for the current frame, using motion data from the current reference frame, identifying a current superblock from the current frame, obtaining reference warp motion parameters for the current superblock by fitting the projected motion field to a warp motion model, and using the reference warp motion parameters to code respective blocks from the superblock.

公开(公告)号：US12267484B2

公开(公告)日：2025-04-01

申请号：US18074562

申请日：2022-12-05

Applicant: GOOGLE LLC

Inventor： Mohammed Golam Sarwer ,  Rachel Barker ,  Jianle Chen ,  Debargha Mukherjee

IPC: H04N19/46 ,  H04N19/105 ,  H04N19/176 ,  H04N19/182

Abstract: Encoding and decoding using warped reference list includes generating a reconstructed frame from an encoded bitstream by, for decoding a current block for the reconstructed frame, obtaining a dynamic reference list, obtaining a warped reference list, decoding a warped reference list index value, obtaining optimal predicted warped model parameters from the warped reference list in accordance with the index value, decoding differential warped model parameters, obtaining, as optimal warped model parameters, a result of adding the optimal predicted warped model parameters and the differential warped model parameters, obtaining predicted block data in accordance with the optimal warped model parameters, decoding residual block data, and obtaining, as decoded block data for the current block, a result of adding the residual block data and the predicted block data.

公开(公告)号：US20240187566A1

公开(公告)日：2024-06-06

申请号：US18074562

申请日：2022-12-05

Applicant: GOOGLE LLC

Inventor： Mohammed Golam Sarwer ,  Rachel Barker ,  Jianle Chen ,  Debargha Mukherjee

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/182 ,  H04N19/46

CPC classification number: H04N19/105 ,  H04N19/176 ,  H04N19/182 ,  H04N19/46

Abstract: Encoding and decoding using warped reference list includes generating a reconstructed frame from an encoded bitstream by, for decoding a current block for the reconstructed frame, obtaining a dynamic reference list, obtaining a warped reference list, decoding a warped reference list index value, obtaining optimal predicted warped model parameters from the warped reference list in accordance with the index value, decoding differential warped model parameters, obtaining, as optimal warped model parameters, a result of adding the optimal predicted warped model parameters and the differential warped model parameters, obtaining predicted block data in accordance with the optimal warped model parameters, decoding residual block data, and obtaining, as decoded block data for the current block, a result of adding the residual block data and the predicted block data.