Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)
- 2001.06b
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- Pages.63-66
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- 2001
An optical encryption system for Joint transform correlator
JTC 구조를 이용한 광학적 영상 암호화 시스템
Abstract
In this paper a binary image encryption technique and decryption system based on a joint transform correlator (JTC) are Proposed. In this method, a Fourier transform of the encrypted image is used as the encrypted data and a Fourier transform of the random phase is used as the key code. The original binary image can be reconstructed on a square law device, such as a CCD camera after the joint input is inverse Fourier transformed. The proposed encryption technique does not suffer from strong auto-correlation terms appearing in the output plane. Based on computer simulations, the proposed encryption technique and decoding system were demonstrated as adequate for optical security applications.
Keywords