Fourier-Plane Encryption System using Divided Images and a Joint Transform Correlator

분할 영상과 결합변환 상관기를 이용한 주파수 영역에서의 광 암호화 시스템 구현

We propose the optical encryption system using two divided image to hide the original image and a joint transform correlator. The encryption procedure is performed by the Fourier transform of the product of each phase encoded image (divided phase images) and the same random phase image which is generated by computer processing. An autocorrelation term of joint transform correlator contributes to decrypt the original image. This system will be used in optical certification.