CNN-based fast source device identification

• URL: http://arxiv.org/abs/2001.11847v3
• Date: Wed, 8 Jul 2020 13:57:26 GMT
• Title: CNN-based fast source device identification
• Authors: Sara Mandelli, Davide Cozzolino, Paolo Bestagini, Luisa Verdoliva, Stefano Tubaro
• Abstract summary: We propose a fast and accurate solution using convolutional neural networks (CNNs) Specifically, we propose a 2-channel-based CNN that learns a way of comparing camera fingerprint and image noise at patch level. This makes the approach particularly suitable in scenarios where large databases of images are analyzed, like over social networks.
• Score: 30.17213343080699
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Source identification is an important topic in image forensics, since it allows to trace back the origin of an image. This represents a precious information to claim intellectual property but also to reveal the authors of illicit materials. In this paper we address the problem of device identification based on sensor noise and propose a fast and accurate solution using convolutional neural networks (CNNs). Specifically, we propose a 2-channel-based CNN that learns a way of comparing camera fingerprint and image noise at patch level. The proposed solution turns out to be much faster than the conventional approach and to ensure an increased accuracy. This makes the approach particularly suitable in scenarios where large databases of images are analyzed, like over social networks. In this vein, since images uploaded on social media usually undergo at least two compression stages, we include investigations on double JPEG compressed images, always reporting higher accuracy than standard approaches.

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