1 January 1999 Optical image encryption based on XOR operations
JongWook Han, Choon-Sik Park, Dae-Hyun Ryu, Eun-Soo Kim
Author Affiliations +
We propose a new optical image encryption technique based on exclusive-OR (XOR) operations for a security system that controls the entrance of authorized persons. The basic idea is that we convert a gray-level image to eight bit planes for image encryption. We use the XOR operation that is commonly used such as the well-known encryption method. The input image is encrypted by performing optical xOr operations with the key bit stream that are generated by digital encryption algorithms. The gray level input image is converted to eight bit planes, which are represented on a liquid crystal device (LCD). The key data represented on different LCDs is reproduced to eight bit planes by a lenslet array. The optical XOR operations between the key data and the bit planes are performed by the polarization encoding method. The results of XOR operations, which are detected by a CCD camera, are converted to an encrypted gray-level image and the image is used as an input to the binary phase extraction joint transform correlator (BPEJTC) for comparison with reference images. We present some simulation results that verify the proposed method.
JongWook Han, Choon-Sik Park, Dae-Hyun Ryu, and Eun-Soo Kim "Optical image encryption based on XOR operations," Optical Engineering 38(1), (1 January 1999). https://doi.org/10.1117/1.602060
Published: 1 January 1999
Lens.org Logo
CITATIONS
Cited by 141 scholarly publications and 3 patents.
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Image encryption

LCDs

Optical image encryption

Polarization

Computer security

Binary data

Logic

RELATED CONTENT


Back to Top