公开(公告)号：US11748988B1

公开(公告)日：2023-09-05

申请号：US17236688

申请日：2021-04-21

Applicant: Amazon Technologies, Inc.

Inventor： Shixing Chen ,  Xiaohan Nie ,  David Jiatian Fan ,  Dongqing Zhang ,  Vimal Bhat ,  Muhammad Raffay Hamid

IPC: G06V20/40 ,  G06N20/00 ,  G06N5/04 ,  G06F16/73 ,  G06F16/78 ,  G11B27/34 ,  H04N5/14 ,  G11B27/036 ,  G06V10/75 ,  G06F18/22 ,  G06F18/214

CPC classification number: G06V20/46 ,  G06F16/73 ,  G06F16/78 ,  G06F18/214 ,  G06F18/22 ,  G06N5/04 ,  G06N20/00 ,  G06V10/751 ,  G06V20/49 ,  G11B27/036 ,  G11B27/34 ,  H04N5/147

Abstract: Techniques for automatic scene change detection in a video are described. As one example, a computer-implemented method includes extracting features of a query shot and its neighboring shots of a first set of shots without labels with a query model, determining a key shot of the neighboring shots which is most similar to the query shot based at least in part on the features of the query shot and its neighboring shots, extracting features of the key shot with a key model, training the query model into a trained query model based at least in part on a comparison of the features of the query shot and the features of the key shot, extracting features of a second set of shots with labels with the trained query model, and training a temporal model into a trained temporal model based at least in part on the features extracted from the second set of shots and the labels of the second set of shots.