Fresnel patterns insertion on image for data encoding and robust perceptual image hashing
Thierry Fournel, Audrey Rivoire, J.-M. Becker, Bahrain Javidi · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2010
A piling of Fresnel patterns is inserted in an image for data encoding and image hashing synchronization, dedicated to local authentication. Beyond, the problem is to preserve both decoding and image content perception. Besides this, the insertion must not too much alter perceptual image hashing.