Secure and Progressive image transmission through shadows generated by multiwavelet transform

In this paper, multiwavelet transform is used in the context of image sharing and SPIHT-generated bit stream for Shamir’s (r, m) threshold scheme over Galois field. This provides multiwavelet-based embedded shadow images for progressive transmission and reconstruction. It is secure and fault-tolerant, and gives small shadow size and excellent rate-distortion performance. Experimental results demonstrate the characteristics of this method.