公开(公告)号：US20250097452A1

公开(公告)日：2025-03-20

申请号：US18969951

申请日：2024-12-05

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Jing Ya LI ,  Chong Soon LIM ,  Ru Ling LIAO ,  Hai Wei Sun ,  Han Boon TEO ,  Kiyofumo ABE ,  Tadamss Toma ,  Takahiro NISHI

IPC: H04N19/513 ,  H04N19/433

Abstract: An encoder includes: circuitry; and memory coupled to the circuitry. In operation, the circuitry: derives a base motion vector to be used in predicting a current block to be encoded; derives a first motion vector different from the base motion vector; derives a motion vector difference based on a difference between the base motion vector and the first motion vector; determines whether the motion vector difference is greater than a threshold; modifies the first motion vector when the motion vector difference is determined to be greater than the threshold, and does not modify the first motion vector when the motion vector difference is determined not to be greater than the threshold; and encodes the current block using the first motion vector modified or the first motion vector not modified.