Published

Image Processing

Pushbroom Satellite Source Identification Using PRNU: A Sentinel-2 Application

Published on - 14th International Workshop on Biometrics and Forensics

Authors: Matthieu Serfaty, Marina Gardella, Quentin Bammey, Rafael Grompone von Gioi, Carlo de Franchis

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In this work, we take a step toward robust source identification for pushbroom satellite detectors by addressing source detector attribution in satellite imagery using Photo-Response Non-Uniformity (PRNU). As natural camera-based methods do not generalize well to satellite images, we adapt PRNU analysis to pushbroom sensors by extracting 1D reference signals per detector and comparing them with test segments. Experiments on Sentinel-2 data demonstrate that reliable fingerprints can be constructed from just a few images, making it possible to verify the authenticity of a L1B Sentinel-2 source.