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10 December 2002 Implementation of multiple information hiding & real-time extraction system
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Proceedings Volume 4861, Multimedia Systems and Applications V; (2002) https://doi.org/10.1117/12.456394
Event: ITCom 2002: The Convergence of Information Technologies and Communications, 2002, Boston, MA, United States
Abstract
In this paper, a new optodigital multiple information hiding and real-time extraction system is suggested. In the process of multiple information hiding, stego keys are generated by combined use of PRS (pseudo-random sequence) and HM (Hadamard matrix) and then, they are used to hide multiple data in an arbitrary cover image without crosstalks. To extract multiple information hidden in the stego image in real-time, a new optical NJTC(nonlinear joint transform correlator)-based extraction system is introduced. In this optical extraction system, both the stego image and each of stego keys are placed at the input plane of the correlator and jointly Fourier transformed. And, the power spectrum of the jointly Fourier transformed signal is detected at the spatial frequency domain and inversely Fourier transformed again. Then, the final correlation peaks between them can be found in the correlation plane as an authentic signal. From good experimental results on multiple information hiding and optical extraction using Arabic numerials of "1", "2" and "3", a possibility of implementation of a new optodigital multiple information hiding and real-time extraction system is suggested.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jin-Hyug Choi, Jung-Jin Kim, Byung-Chul Cho, Maeng-Ho Lee, and Eun-Soo Kim "Implementation of multiple information hiding & real-time extraction system", Proc. SPIE 4861, Multimedia Systems and Applications V, (10 December 2002); https://doi.org/10.1117/12.456394
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