Linear Filter Kernel Estimation Based on Digital Camera Sensor Noise

  title={Linear Filter Kernel Estimation Based on Digital Camera Sensor Noise},
  author={Chang Liu and Matthias Kirchner},
  booktitle={Media Watermarking, Security, and Forensics},
We study linear filter kernel estimation from processed digital images under the assumption that the image’s source camera is known. By leveraging easy-to-obtain camera-specific sensor noise fingerprints as a proxy, we have identified the linear crosscorrelation between a pre-computed camera fingerprint estimate and a noise residual extracted from the filtered query image as a viable domain to perform filter estimation. The result is a simple yet accurate filter kernel estimation technique that… 

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