Detection of Copy-Move Forgery based on one improved LLE method

digital image forensic is an emerging frontier field of image processing area. There are many kind of forgeries, in which copy-move forgery is the most important and popular one. Then, digital image forensic which aims at detecting copy-move forgery is very important. A technique based on PCA to detect the Copy-Move Forgery has been carried out. But PCA technique can't detect the fused edge. We present a new approach based on one improved LLE. This new approach can detect not only copy-move areas but also the fused edges.