A generalized Benford's law for JPEG coefficients and its applications in image forensics

Dongdong Fu, Yun Q. Shi, Wei Su

Research output: Chapter in Book/Report/Conference proceedingConference contribution

225 Scopus citations

Abstract

In this paper, a novel statistical model based on Benford's law for the probability distributions of the first digits of the block-DCT and quantized JPEG coefficients is presented. A parametric logarithmic law, i.e., the generalized Benford's law, is formulated. Furthermore, some potential applications of this model in image forensics are discussed in this paper, which include the detection of JPEG compression for images in bitmap format, the estimation of JPEG compression Q-factor for JPEG compressed bitmap image, and the detection of double compressed JPEG image. The results of our extensive experiments demonstrate the effectiveness of the proposed statistical model.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE-IS and T Electronic Imaging - Security, Steganography, and Watermarking of Multimedia Contents IX
PublisherSPIE
ISBN (Print)0819466182, 9780819466181
DOIs
StatePublished - 2007
EventSecurity, Steganography, and Watermarking of Multimedia Contents IX - San Jose, CA, United States
Duration: Jan 29 2007Feb 1 2007

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6505
ISSN (Print)0277-786X

Other

OtherSecurity, Steganography, and Watermarking of Multimedia Contents IX
Country/TerritoryUnited States
CitySan Jose, CA
Period1/29/072/1/07

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Keywords

  • Benford's law
  • Block-DCT coefficients
  • First digit law
  • JPEG coefficients
  • Probability distribution

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