Novel Detection of Image Forgery for Exchanged Foreground and Background Using Image Watermarking Based on Alpha Matte

This paper proposes an novel method to detect image forgery for exchanged foreground and background by using image watermarking based on alpha matte. in the proposed method, the DWT-DCT-SVD-based image watermarking is used and applied on the alpha mattes obtained using image matting algorithms. the difference of singular values is used to determine the exchanged foreground or exchanged background. Experimental results show that the proposed method can obtain accurate detection of image forgery for exchanged foreground or background. Therefore, the proposed method is a high-value tool of the image forgery detection.