Dual security-based image steganography

In this paper, an image steganographic method with security level confined to a dual security criterion is addressed. Dual security is designed to be measured by kurtosis in the spatial domain and by relative entropy in the frequency domain, simultaneously. Messages are encoded into the wavelet domain by adjusting the magnitude (least few significant bits) relationship between four neighboring child nodes (called permutations of order representations) to satisfy the dual security criterion. Relationship between security, perceptual fidelity, and capacity are investigated on various images.