An Efficient Match-based Duplication Detection Algorithm
CRV '06 Proceedings of the The 3rd Canadian Conference on Computer and Robot Vision
Robust Detection of Region-Duplication Forgery in Digital Image
ICPR '06 Proceedings of the 18th International Conference on Pattern Recognition - Volume 04
Detecting filtered cloning in digital images
Proceedings of the 9th workshop on Multimedia & security
Detection of Region Duplication Forgery in Digital Images Using Wavelets and Log-Polar Mapping
ICCIMA '07 Proceedings of the International Conference on Computational Intelligence and Multimedia Applications (ICCIMA 2007) - Volume 03
Fast and reliable resampling detection by spectral analysis of fixed linear predictor residue
Proceedings of the 10th ACM workshop on Multimedia and security
Detection of Resampling Supplemented with Noise Inconsistencies Analysis for Image Forensics
ICCSA '08 Proceedings of the 2008 International Conference on Computational Sciences and Its Applications
Detection of Copy-Move Forgery in Digital Images Using SIFT Algorithm
PACIIA '08 Proceedings of the 2008 IEEE Pacific-Asia Workshop on Computational Intelligence and Industrial Application - Volume 02
Digital Watermarking and Steganography
Digital Watermarking and Steganography
An efficient and robust method for detecting copy-move forgery
ICASSP '09 Proceedings of the 2009 IEEE International Conference on Acoustics, Speech and Signal Processing
Fast copy-move forgery detection
WSEAS Transactions on Signal Processing
Detection of copy-rotate-move forgery using Zernike moments
IH'10 Proceedings of the 12th international conference on Information hiding
Exposing digital forgeries by detecting traces of resampling
IEEE Transactions on Signal Processing
Blind Authentication Using Periodic Properties of Interpolation
IEEE Transactions on Information Forensics and Security
The trustworthy digital camera: restoring credibility to the photographic image
IEEE Transactions on Consumer Electronics
Rotation, scale, and translation resilient watermarking for images
IEEE Transactions on Image Processing
Multiscale Fragile Watermarking Based on the Gaussian Mixture Model
IEEE Transactions on Image Processing
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Although the detection of duplicated regions plays an important role in image forensics, most of the existing methods aimed at detecting duplicates are too sensitive to geometric changes in the replicated areas. As a result, a slight rotation can be used not only for the copied region to fit better the scene in the image, but also to hinder the detection of the tampering. In this paper, a novel forensic method is presented to detect duplicated regions, even when the copied portions have undergone reflection, rotation and/or scaling. To achieve this, overlapping blocks of pixels are mapped to log-polar coordinates, and then summed along the angle axis, to produce a one-dimensional (1-D) descriptor invariant to reflection and rotation. Besides, scaling in rectangular coordinates results in a simple translation of the descriptor. The dimension-reduced representation of each block has a favourable impact in the computational cost of the search of similar regions. Extensive experimental results, including a comparative evaluation with two existing methods, are presented to demonstrate the effectiveness of the proposed method.