Shift-tolerance property of fully phase encryption that uses a joint transform correlator.
We technically investigate the robustness of an image encryption technique that uses a virtual phase image and a joint transform correlator (JTC) in the frequency domain. An encrypted image is obtained by the Fourier transform of the product of a virtual phase image, which camouflages the original image, and a random phase image. The resulting image is then decrypted by use of a decrypting key made from the proposed phase assignment rule in order to enhance the level of security. We demonstrate that the encrypted image generated by the proposed JTC-based decryption technique is robust to data loss and image shift.
School of Electrical Engineering and Computer Science, Kyungpook National University 1370 Sangyuk-Dong, Buk-Gu, Daegu, 702-701, Korea. dhseo@bada.hhu.ac.kr
Dong-Hoan
DH
Seo
Chang-Mok
CM
Shin
Soo-Joong
SJ
Kim