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Source camera identification finds many applications in real world. Although many identification methods have been proposed, they work with only a small set of cameras, and are weak at identifying cameras of the same model. Based on the observation that a digital image would not change if the same Auto-White Balance (AWB) algorithm is applied for the second time, this paper proposes to identify the source camera by approximating the AWB algorithm used inside the camera. To the best of ourdoi:10.1109/iccv.2011.6126225 dblp:conf/iccv/DengGZ11 fatcat:yvvgpc22undprfvtpx5bjfhhga