公开(公告)号：US11197011B2

公开(公告)日：2021-12-07

申请号：US17032446

申请日：2020-09-25

Applicant: Socionext Inc.

Inventor： Hirofumi Nagaoka

IPC: H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44 ,  H04N19/105 ,  H04N19/51

Abstract: A decoding method includes obtaining a rectangular region to be decoded in a picture, setting a first template region in accordance with a position of the rectangular region, setting a second template region corresponding to the first template region in a reference picture, setting third template regions each of which is obtained by moving the second template region using a corresponding vector in the reference picture, calculating image correlation values each of which is obtained between a corresponding one of the third template regions and the first template region, determining a motion vector of the rectangular region, wherein the setting a first template region includes setting a region adjacent to a predetermined block including the rectangular region as the first template region when a size of the rectangular region is a predetermined threshold size or smaller, or when a picture including the rectangular region corresponds to a non-reference picture.