Detecting Forged (Altered) Images

Are digital images submitted as court evidence genuine or have the pictures been altered or modified? We developed a range of algorithms performing automated authenticity analysis of JPEG images, and implemented them into a commercially available forensic tool. The tool produces a concise estimate of the image’s authenticity, and clearly displays the probability of the image being forged. This paper discusses methods, tools and approaches used to detect the various signs of manipulation with digital images…

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