Implementation of multiple information hiding and real-time extraction system

Jin-Hyug Choi; Jung-Jin Kim; Byung-Chul Cho; Maeng-Ho Lee; Eun-Soo Kim

doi:10.1117/12.456394

10 December 2002 Implementation of multiple information hiding & real-time extraction system

Jin-Hyug Choi, Jung-Jin Kim, Byung-Chul Cho, Maeng-Ho Lee, Eun-Soo Kim

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.

Citation Download Citation

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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KEYWORDS

Data hiding

Signal detection

Image processing

Joint transforms

Optical correlators

Data processing

Nonlinear optics

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