A steganography based on orthogonal moments

Abstract

The increase in data transmission volume and repository size have increased the need to secure and protecting a message such that it does not draw attention. in this paper, a new steganography algorithm in the transform domain of images based on orthogonal polynomials (OPs) is presented. The algorithms get benefits from the low energy moments, where the message is embedded. First, the proposed algorithm transforms the cover image into the transform domain using squared form of Krawtchouk-Tchebichef polynomials. After that, the low energy moments (transform coefficients) is substituted by the message data. Finally, the transform domain coefficients are transformed into the spatial domain to obtain the stego-image. Experimental results show that the proposed algorithm is competent in embedding information compared to other methods in terms of message size and image quality.