Copy move image forgery detection using mutual information

Now a days it´s going to be very much difficult to have trust on digital images. With the advancement and ready availability of image editing software, a digital image can be manipulated so elegantly that there should be no visual clues of manipulation. So it is very much necessary to detect whether a digital image is an original one or some modifications is done after snapped by camera. In this paper a new technique is proposed to detect copy-move image forgery(or region duplication forgery) based on Mutual Information of different regions of an image. No parameter tuning is required for this technique. Experimental results show that this technique is valid for detection of copy moved regions in an digital image and also quite robust to illumination variation.