Robust image steganography with wavelet transform and Hybrid wavelet transform generated using Kekre, Walsh and sine transforms

In this paper, orthogonal transforms with their wavelet transforms and Hybrid wavelet transforms are proposed to be used for image steganography using Kekre, Walsh and Sine transforms. Transform domain techniques performs better in case of attacks on stego image. A set of 10 Cover images for hiding 10 multifarious message images has been used for experimentation. Results demonstrates that, in case of normal embedding as well as in case of attacks on stego image such as cropping, brightness, darkness; Hybrid wavelet transforms of Cosine + Kekre, Cosine + Walsh, Cosine + Sine transforms performs better than individual orthogonal transforms and their wavelet transforms.