A survey of image forgery detection techniques

Images are the medium of communication. But nowadays various tools are available that manipulates the image. So there is a need to detect the forged image so that image is not altered and we can be aware about the real and forged image. There are two types of image forgery detection copy move and image splicing, and various attacks like blurring, noise, scaling, etc may occur. The overview of forgery detection techniques, the basic flow of how the forged image can be detected is presented. And finally it is concluded with the comparative study with some parameters, merits and demerits.