A Survey on Image Forgery Detection Techniques

In today's technological era, digital images are the most common form of conveying information over internet, in journals, in newspapers, magazines, etc. To capture, create or modify/edit images has become very simple with the means of image processing and editing tools. Digital images are considered as proofs against various crimes or evidences for various purposes, so accuracy in digital images is very crucial but authenticating the tampered images is a major problem in the field of forensics, medical sciences. Basically copy-move forgery is one of the types of digital image forgery in which one region is copied and pasted into the same image or some other image with an intention to hide something or showing the scene which is not true. In this paper various techniques used to detect copy-move forgery are discussed.