Non-zero-order joint transform correlator using random phase function in the input plane

G. Unnikrishnan; Joby Joseph; Kehar Singh

doi:10.1117/12.346828

29 April 1999 Non-zero-order joint transform correlator using random phase function in the input plane

G. Unnikrishnan, Joby Joseph, Kehar Singh

Author Affiliations +

Proceedings Volume 3729, Selected Papers from International Conference on Optics and Optoelectronics '98; (1999) https://doi.org/10.1117/12.346828
Event: Selected Papers from the International Conference on Optics and Optoelectronics, 1998, Dehradun, India

Abstract

We propose a new technique to eliminate zero order in a joint transform correlator (JTC). In the proposed technique, the input target and reference images in a JTC are modulated by identical random phase functions. This results in a sharpening of the zero order as well as the correlation peak in the correlation phase. The zero order can be eliminated by subtracting a constant value from the joint power spectrum. The proposed non-zero order JTC has better discrimination ability than a conventional JTC. A computer simulation study is presented to support the proposed technique.

Citation Download Citation

G. Unnikrishnan, Joby Joseph, and Kehar Singh "Non-zero-order joint transform correlator using random phase function in the input plane", Proc. SPIE 3729, Selected Papers from International Conference on Optics and Optoelectronics '98, (29 April 1999); https://doi.org/10.1117/12.346828

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE