Secret-Image Sharing for Multimedia Chaotic Encryption

With the noteworthy advance in visual sensing and image analysis techniques, image data are used in many sensitive applications including military surveillance, health-care, and meteorology. The possibility for images to be intercepted, as well as the criticality of the application contexts, make the need for robust image encryption of utmost importance. This is exacerbated by the fact that the existing standard symmetric ciphers do not adapt to the intrinsic image features. To fulfill the image security requirements, chaotic ciphers have been the most used approaches. The idea of using 2-D chaotic maps to design permutation-based image encryption schemes was initially proposed assuming that the size of the plain-image is H x W.