A Survey on Copy Move Forgery Detection in Images

Nowadays, the use of digital images are increasing day to day. With the advancement in technology, newer and newer softwares like Adobe Photoshop, GIMP etc. are emerging. With these tools even a normal person can change the content from an original image. This leads to image tampering. Image tampering are of various types and one of the most common type is the copy-move forgery. Copy-move forgery is the process in which a portion of the image is copied and pasted into another portion in the same image. To make the detection difficult, a forger can apply some preprocessing operations also. By doing this, the forged region might not be visible at a glance. Since, the images are an important source of information, and is used in some legal investigations, medical fields etc. it is necessary to ensure the integrity and authenticity of an image. Therefore, an efficient detection method should be adopted to detect the forged areas.