Sensor-Pattern-Noise Map Reconstruction in Source Camera Identification for Size-Reduced Images
Joji WATANABE, Tadaaki Hosaka, Takayuki Hamamoto · IEICE Transactions on Information and Systems · 2013
For source camera identification, we propose a method to reconstruct the sensor pattern noise map from a size-reduced query image by minimizing an objective function derived from the observation model. Our method can be applied to multiple queries, and can thus be further improved. Experiments demonstrate the superiority of the proposed method over conventional interpolation-based magnification algorithms.