The paper suggests a model based on the sharpness and blurriness to confirm the exact tampered areas from the suspicious ones which are detected from similar regions. In copy-move image detection, most research focus on comparing and finding areas with similar properties on the image. Actually, the same areas are not certainly done by copy-move manipulation, they may be the image texture. A model from the sharpness at the collage borderlines and the blurriness inside the image area is built to determine if the areas are really caused by the copy-move manipulation. The combination of feature extraction using oriented FAST and rotated BRIEF (ORB) and tampered region confirmation using a logistic regression model with 98% on accuracy proves the efficiency of the proposed methods.
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