Title:
METHOD AND APPARATUS OF SUBBLOCK-BASED MOTION VECTOR PREDICTION WITH REORDERING AND REFINEMENT IN VIDEO CODING
Document Type and Number:
WIPO Patent Application WO/2024/078331
Kind Code:
A1
Abstract:
Methods and apparatus for video coding using SbTMVP (Subblock-based Temporal Motion Vector Prediction). According to the method, one or more motion shift candidates are determined based on one or more spatial neighbouring blocks of the current block. Multiple collocated reference blocks in a collocated picture are determined based on said one or more motion shift candidates and said one or more spatial neighbouring blocks of the current block respectively. A target collocated reference block is determined from the multiple collocated reference blocks. Subblock motion information for subblocks of the current block is derived based on target motion information of corresponding subblocks of the target collocated reference block. An SbTMVP candidate for the current block is generated based on the subblock motion information for the subblocks of the current block. The current block is encoded or decoded by using a motion prediction set comprising the SbTMVP candidate.
Inventors:
LAI CHEN-YEN (CN)
CHEN CHING-YEH (CN)
CHUANG TZU-DER (CN)
HSU CHIH-WEI (CN)
CHEN YI-WEN (US)
CHEN CHING-YEH (CN)
CHUANG TZU-DER (CN)
HSU CHIH-WEI (CN)
CHEN YI-WEN (US)
Application Number:
PCT/CN2023/121759
Publication Date:
April 18, 2024
Filing Date:
September 26, 2023
Export Citation:
Assignee:
MEDIATEK INC (CN)
International Classes:
H04N19/513
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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