An image region description method based on step sector statistics and its application in image copy-rotate/flip-move forgery detection

作者：Chen Likai^*; Lu Wei; Ni Jiangqun

来源：International Journal of Digital Crime and Forensics, 2012, 4(1): 49-62.

DOI：10.4018/jdcf.2012010104

• Circle images
• Copy-rotate-move
• Description method
• Digital image forensics
• Flip
• Forgery detections
• Image regions
• Radial direction
• Robust methods
• Rotation angles
• Standard deviation

A robust method for local image region feature description based on step sector statistics is proposed in this paper. The means and the standard deviations along the radial direction of the circle image region are extracted through the sectormasks, and the rearrangement of these statistics makes this image region description method rotation-robust. The proposed description method is applied in the detection of copy-rotate-move forgery, and it can detect the exact rotation angle between the duplicate regions. With minor extension, the proposed description method can also be applied in the detection of copy-flip-move forgery. The experimental results show that the proposed description method can work well for the detection of copy-rotate/flip-move forgery.

• 出版日期2012
• 单位中山大学