With the development of manipulations techniques of digital images, digital image forensic technology is becoming more
and more necessary. However, the determination of processing history of multi-operation is still a challenge problem. In
this paper, we improve the traditional seam insertion algorithm, and propose corresponding detection method. Then an
algorithm that focuses on detecting the processing history of seam insertion and contrast enhancement is proposed, which
can be widely used in practical image forgery. Based on comprehensive analysis, we have discovered the inherent
relationship between seam insertion and contrast enhancement. Different orders of processing make different impacts on
images. By using the newly proposed algorithm, both contrast enhancement followed by seam insertion and seam insertion
followed by contrast enhancement can be detected correctly. Plenty of experiments have been implemented to prove the
accuracy.
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