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a Medical image. b Tampered medical image. c, d The result of scenario 1: SIFT-based method (total keypoints 531, matched keypoints 0). e, f The result of scenario 2: SURF based (total keypoints 691, matched keypoints 4). g, h The result of scenario 3: LBPROT + SURF based (total keypoints 2197, matched keypoints 0). i, j Proposed method (total keypoints 3958, matched keypoints 111)
