Journal of the Korean Institute of Telematics and Electronics A (전자공학회논문지A)
- Volume 33A Issue 12
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- Pages.97-103
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- 1996
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- 1016-135X(pISSN)
Holographic image encryption and decoding scheme
홀로그래픽 영상 암호화 및 디코딩 기법
Abstract
This paper presents a new security verification technique based on an image encryption by a white noise image that serves as an encryption key. In the proposed method that resembles holographic process, the encryption process is executed digitally using FFT routine which gives chances for separating corruptive noise from reconstructed primary image The encoded image thus obtained is regarded as an nterference pattern caused by two lightwaves transmitted through the primary image and the white noise image. The decoding process is executed optically and in real-tiem fashion where lightwave transmitted through the white noise image illuminates the encrypted card.
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