DWT-PCA (EVD) Based Copy-Move Image Forgery Detection
In a copy-move image forgery, a part of an image is copied and then pasted on a different location within the same image. Usually, such an image tampering is done with the aim of either hiding some image details, in which case a background is duplicated, or adding more details resulting in at least some feature being cloned. Whichever the case, image integrity is lost. In this paper, the authors present an improved algorithm based on Discrete Wavelet Transform (DWT) and Principal Component Analysis-EigenValue Decomposition (PCA-EVD) to detect such cloning forgery.