Digital Image Forensics Using SVD Block Processing

The proposed method calculates bivariate measures of distortion between the singular values of the original image and the singular values of the distorted image. This method is able to work in the complete absence of any digital watermark or signature. In this paper, we have quantified the amount of distortion that result from the distorted forms of digital tampering. The pixel difference measure based on SVD is shown the amount of distortion and the distribution of error in the distorted images. Also, the effectiveness of this method is seen through testing the robustness against JPEG compression and noise distortions.