Prakash D. Porey

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Since JPEG is the de facto image format adopted in most of the digital cameras and image editing software, tampered image will be often a recompressed JPEG image. As JPEG works on 8 by 8 block cosine transform most of the tampering correlation inherited by tampered image may get destroyed, making forgery detection difficult thus it is common practice(More)
— Consistent decrease in cost of digital imaging hardware & increase in high quality user friendly image editing software for novice user has served variety of problems to society. Internet & social networking sites made it possible to host enormous no of images without provenance information or authenticity & made possible to share it with single click.(More)
Usually digital image forgeries are created by copy-pasting a portion of an image onto some other image. Forged area is often resized & rotated to make it proportional with respect to neighboring unforged area. This is called as resampling operation which changes certain characteristics of the pasted portion. Thus resampling is the default fingerprint(More)
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