D-S Evidence Theory Based Digital Image Trustworthiness Evaluation Model

Digital images are facing trustworthy crisis with the emergence of various digital image process tools and steganography tools. Current digital image forensic methods can not evaluate the digital image´s trustworthiness. Base on Dempster-Shafer (D-S) evidence theory, this paper proposed a new model which can effectively evaluate digital image trustworthiness. Instead of using Dempster´s original rule of combination, we use feature fusion method to resolve the problem of evidence conflict. Experimental results show that the new proposed model not only can evaluate digital image trustworthiness effectively, but also resolve some problems which puzzling current digital image forensic technology.