Comparitive Analysis on Transformation based Watermarking

Abstract

Steganography is used to hide information, such as an image into an image. Secrecy is one of the moral concepts in the medical field for securing patient records. This paper presents a comparison based on image transformation in digital steganography using medical images. Discrete wavelet transform and Ridgelet transformation are the two transformation techniques being compared where both the transformations use singular value decomposition for embedding the secret image into the cover image. Arnold transformation is applied to patient record (secret image) in order to scramble the image before transformation. The results show the comparative analysis of both transformation based watermarking schemes.