公开(公告)号：US20240169691A1

公开(公告)日：2024-05-23

申请号：US18515832

申请日：2023-11-21

Applicant: MACAU UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Zhiyao LIANG ,  Jixiang YANG ,  Jianqing LI

IPC: G06V10/75 ,  G06V10/46 ,  G06V10/762 ,  G06V10/86 ,  G06V20/00

CPC classification number: G06V10/758 ,  G06V10/46 ,  G06V10/751 ,  G06V10/763 ,  G06V10/86 ,  G06V20/95

Abstract: A method for a copy-paste tampered image detection, including: extracting, using a scale-invariant feature transformation algorithm, key points of an image and features corresponding to the key points; constructing, using a gradient hash matching algorithm, a hash table based on the features, and putting the key points into rows corresponding to serial numbers of the hash table; performing a matching operation, using a k-nearest neighbor algorithm, on the key points in each row of the hash table to obtain key point pairs; and clustering and grouping, using a distance clustering filtering algorithm, the key point pairs, and retaining the key point pairs in a cluster group whose number of the key point pairs is greater than a quantity threshold; and marking circles in the image with each key point, in the key point pairs that are retained, as a center and according to a specified radius.