Image encryption based on watermarking technique in fourier domain using pixel scrambling

In this paper a technique has been proposed that enhances the security level by concealing an image inside another. The method uses Fourier transform with random phase masks to make it imperceptible by obscuring the secret image. It further makes use of scrambling to enhance the integrity of the image. Computer simulations have been carried out in order to prove the results obtained. Furthermore, peak Signal to noise ratio along with the effects of occlusion have also been assessed. The proposed scheme has been subjected to various attacks for steganalysis and the corresponding values of Correlation coefficients, Standard Deviation error and mean error are contemplated.