The origin information of an image is important in image forensic area. One of the most effective methods to link an image to its source camera is the sensor-based camera source identification (CSI). However, recent studies show that the signature that CSI based on can be easily removed or substituted, which questioned the credibility of the CSI results. To rebuild the credibility of the CSI method, in this paper, we introduce a simple yet effective countermeasure against potential attacks based on noise level estimation. Experimental results show the ability of the proposed method to capture the traces left by anti-forensic methods. Take into account the low complexity, the proposed method is very suitable to be a patch on the traditional CSI method.
['Hui Zeng']
Rebuilding the credibility of sensor-based camera source identification