An Image Watermarking Scheme using Threshold Based Secret Sharing

This paper recommends an idea for authenticating the actual ownership by embedding a share of the secret image invisibly into the host or the original image. Frequency domain Techniques such as DWT and SVD are used for embedding shares into the host image. In frequency domain, compared to the original image, the obtained watermarked image is less distorted which in turn creates an environment that makes the embedded share of secret image unavailable for any kind of misuse. The leftover share of secret image is used to prove the actual ownership. The observed end result of this technique is robust against various available image processing attacks.