Mobile Camera Source Identification with SVD

  • A. -R. Soobhany
  • K. P. Lam
  • P. Fletcher
  • D. J. Collins
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 313)

Abstract

A novel method for extracting the characterising sensor pattern noise (SPN) from digital images is presented. Based on the spectral decomposition technique of Singular Value Decomposition, the method estimates the SPN of each image in terms of its energy level by first transforming the image/signals into a linear additive noise model that separates the photo response non-uniformity (PRNU) of the associated camera from the signal subspace. The camera reference signatures of the individual cameras are computed from a sample of their respective images and compared with a mixture of image signatures from a set of known camera devices. The statistical properties of the method were studied using the Student’s t-test constructed under the null hypothesis formalism. Our studies show that it is possible to determine the source device of digital images from camera phones using such method of signature extraction, with encouraging results.

Keywords

Source identification Singular value decomposition Digital image forensics Sensor pattern noise PRNU Mobile camera phone 

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • A. -R. Soobhany
    • 1
  • K. P. Lam
    • 1
  • P. Fletcher
    • 1
  • D. J. Collins
    • 1
  1. 1.Research Institute for the Environment, Physical Sciences and Applied MathematicsKeele UniversityKeeleUnited Kingdom

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