Fusion of Camera Model and Source Device Specific Forensic Methods for Improved Tamper Detection

• URL: http://arxiv.org/abs/2002.10123v2
• Date: Tue, 5 May 2020 14:41:47 GMT
• Title: Fusion of Camera Model and Source Device Specific Forensic Methods for Improved Tamper Detection
• Authors: Ahmet G\"okhan Poyraz, Ahmet Emir Dirik, Ahmet Karak\"u\c{c}\"uk, Nasir Memon
• Abstract summary: PRNU based camera recognition method is widely studied in the image forensic literature. In this paper, we propose their combination via a Neural Network to achieve better small-scale tamper detection performance.
• Score: 2.064612766965483
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: PRNU based camera recognition method is widely studied in the image forensic literature. In recent years, CNN based camera model recognition methods have been developed. These two methods also provide solutions to tamper localization problem. In this paper, we propose their combination via a Neural Network to achieve better small-scale tamper detection performance. According to the results, the fusion method performs better than underlying methods even under high JPEG compression. For forgeries as small as 100$\times$100 pixel size, the proposed method outperforms the state-of-the-art, which validates the usefulness of fusion for localization of small-size image forgeries. We believe the proposed approach is feasible for any tamper-detection pipeline using the PRNU based methodology.

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