Feature Fusion for Blurring Detection in Image Forensics

BenJuan YANG  BenYong LIU  

Publication
IEICE TRANSACTIONS on Information and Systems   Vol.E97-D   No.6   pp.1690-1693
Publication Date: 2014/06/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.E97.D.1690
Type of Manuscript: LETTER
Category: Image Processing and Video Processing
Keyword: 
image forensics,  blurring detection,  feature fusion,  PCA,  SVM,  

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Summary: 
Artificial blurring is a typical operation in image forging. Most existing image forgery detection methods consider only one single feature of artificial blurring operation. In this manuscript, we propose to adopt feature fusion, with multifeatures for artificial blurring operation in image tampering, to improve the accuracy of forgery detection. First, three feature vectors that address the singular values of the gray image matrix, correlation coefficients for double blurring operation, and image quality metrics (IQM) are extracted and fused using principal component analysis (PCA), and then a support vector machine (SVM) classifier is trained using the fused feature extracted from training images or image patches containing artificial blurring operations. Finally, the same procedures of feature extraction and feature fusion are carried out on the suspected image or suspected image patch which is then classified, using the trained SVM, into forged or non-forged classes. Experimental results show the feasibility of the proposed method for image tampering feature fusion and forgery detection.