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Blind forensics of contrast enhancement in digital images
Conference proceeding

Blind forensics of contrast enhancement in digital images

Matthew Stamm, K. J. R Liu and IEEE
2008 15th IEEE International Conference on Image Processing, pp 3112-3115
Oct 2008

Abstract

Application software blind forensics Colored noise contrast enhancement Digital images Filters Forensics histogram equalization Histograms Layout Multimedia forensics Pixel Reliability engineering Testing
Digital images have seen increased use in applications where their authenticity is of prime importance. This proves to be problematic due to the widespread availability of digital image editing software. As a result, there is a need for the development of reliable techniques for verifying an image's authenticity. In this paper, a blind forensic algorithm is proposed for detecting the use of global contrast enhancement operations to modify digital images. Furthermore, a separate algorithm is proposed to identify the use of histogram equalization, a commonly implemented contrast enhancement operation. Both algorithms perform detection by seeking out unique artifacts introduced into an image's histogram as a result of the particular operation examined. Additionally, results are presented showing the effectiveness of both proposed algorithms.

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95 citations in Scopus

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Web of Science research areas
Computer Science, Artificial Intelligence
Engineering, Electrical & Electronic
Imaging Science & Photographic Technology
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