Paper Info
Title
SIFT keypoint removal and injection for countering matching-based image forensics.
Abstract
Scale Invariant Feature Transform (SIFT) has been widely employed in several image application domains, including Image Forensics (e.g. detection of copy-move forgery or near duplicates). Until now, the research community has focused on studying the robustness of SIFT against legitimate image processing, but rarely concerned itself with the problem of SIFT security against malicious procedures. Recently, a number of methods allowing to remove SIFT keypoints from an original image have been devised. Although quite effective, such methods produce an attacked image with very few (or no) keypoints, thus leaving cues that can be easily exploited by a forensic analyst to reveal the occurred manipulation. In this paper, we explore the topic of reintroducing fake SIFT keypoints into a previously cleaned image in order to address the main weakness of the existing removal attacks. In particular, we evaluate the fitness of locally adaptive contrast enhancement methods to the task of injecting new keypoints. The results we obtained are encouraging: (i) it is possible to effectively introduce new keypoints whose descriptors do not match with those of the original image, thus concealing the removal forgery; (ii) the perceptual quality of the image following the removal and injection attacks is comparable to the one of the original image.
Year
DOI
Venue
2013
10.1145/2482513.2482524
IH&MMSec
Keywords
Field
DocType
existing removal attack,sift security,copy-move forgery,removal forgery,original image,sift keypoints,matching-based image forensics,legitimate image processing,fake sift keypoints,image application domain,new keypoints,sift keypoint removal
Scale-invariant feature transform,Computer vision,Injection attacks,Pattern recognition,Computer science,Image processing,Robustness (computer science),Image forensics,Artificial intelligence
Conference
Citations 
PageRank 
References 
5
0.45
15
Authors
4
Name
Order
Citations
PageRank
Irene Amerini132521.16
M. Barni23091246.21
Roberto Caldelli348137.01
Andrea Costanzo41097.66