Electronic Science and Technology ›› 2020, Vol. 33 ›› Issue (3): 38-43.doi: 10.16180/j.cnki.issn1007-7820.2020.03.008

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Copy-move Detection Algorithm Combining Keypoints and Block Advantages

YANG Shanshan,ZHANG Daxing,GUO Jiawei,WANG Shitiao   

  1. Institute of Image Graphics,Hangzhou Dianzi University,Hangzhou 310018,China
  • Received:2019-03-06 Online:2020-03-15 Published:2020-03-25
  • Supported by:
    National Natural Science Foundation of China(61572160)

Abstract:

Digital images are widely used, and the use of various software for editing images has led to the authenticity of the images to be verified. Most of the algorithms based on keypoint detection have a limited number of key points, resulting in incomplete or unclear final detection results.This paper proposed a detection algorithm based on segmentation combined with keypoint features. First, SIFT was used to extract keypoint features and then used. The g2NN algorithm matched the key points, used the designed clustering to remove the mismatch, and according to the improved adaptive segmentation algorithm, marked the matched image blocks, and then finded the surrounding neighbor blocks to compare and matched the output results. The algorithm could effectively detected and marked the copy tampering area of large pictures, and was robust to most post-processing, and marked the tampering area more completely.

Key words: copy-and-paste detection, SIFT, segmentation, key point matching, clustering, robust

CLC Number: 

  • TP391