International Association of Scientific Innovation and Research (IASIR)
Encryption technology is an important measure to ensure the security of digital image; this paper's main purpose is to research how to encrypt images by chaos. In this paper, five chaotic maps are compared and noise effects are observed on image. Firstly, the authors use the image encryption algorithm to convert original image to encrypted image. Now they apply noise on the encrypted image and then decrypt cipher image with noise back to original image. The simulation experimental results show that cross chaotic map has got best results.