10 September 2005 Optical encryption based on the input phase mask designed for the space bandwidth of the optical system
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Abstract
To improve the image quality of the decrypted image through the double-random phase-encoding optical encryption, the design method of the input phase mask is proposed. The input phase mask is iteratively designed so that the extent of the Fourier spectrum of the product of an input image and the input phase mask matches to the space bandwidth of the optical system. By using the designed input phase mask, we show that the bit-error rate is improved. We also discuss the number of the phase levels of the designed input phase mask.
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Takanori Nomura, Takanori Nomura, Bahram Javidi, Bahram Javidi, } "Optical encryption based on the input phase mask designed for the space bandwidth of the optical system", Proc. SPIE 5908, Optical Information Systems III, 59080B (10 September 2005); doi: 10.1117/12.618271; https://doi.org/10.1117/12.618271
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