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Shi, YQ and Fu, D (2011)

Apparatus and method for a generalized benford's law analysis of DCT and JPEG coefficients

Patent 7940989 Issued on May 10, 2011.

ISSN/ISBN: Not available at this time. DOI: Not available at this time.



Abstract: A method and apparatus for 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. A parametric logarithmic law, the generalized Benford's law, is formulated. Furthermore, some potential applications of this model in image forensics, 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. Experimental results demonstrate the effectiveness of the statistical model used in embodiments of the invention.


Bibtex:
@Misc{, AUTHOR = {Shi, Y.Q. and Fu, D.}, TITLE = {Apparatus and method for a generalized benford's law analysis of DCT and JPEG coefficients}, HOWPUBLISHED = {Patent 7940989 Issued on May 10, 2011}, YEAR = {2011}, URL={http://www.google.com/patents/US7940989}, }


Reference Type: Patent

Subject Area(s): Image Processing