A hybrid model for digital camera source identification

Authors:
Min-Jen Tsai;Cheng-Sheng Wang;Jung Liu
Affiliations:
Institute of Information Management, National Chiao Tung University, R.O.C.;Institute of Information Management, National Chiao Tung University, R.O.C.;Institute of Information Management, National Chiao Tung University, R.O.C.
Venue:
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
Year:
2009

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Abstract

Digital forensics has lately become one of the very important applications to identify the characteristics and the originality of the digital devices. This study has focused on analyzing the relationship between digital cameras and the images. In conjunction with image processing techniques and data exploration methods, it calculates the characteristic values of the images taken by different cameras. Training and categorization are conducted through the support vector machines for identifying the camera source of the images. Based on the fact that the internal imaging algorithms of a camera are different from one manufacturer to another, this method computes the hidden characteristics of the images. The result of experiments shows the proposed approach can obtains 94.95% identification rate when images are taken from 20 different cameras.