Optoelectronic hybrid joint transform correlator based on power spectrum subtracting and exponential filtering

Hongxia Wang; Junfa He; Zhaoxuan Sheng

doi:10.1117/12.574410

11 January 2005 Optoelectronic hybrid joint transform correlator based on power spectrum subtracting and exponential filtering

Hongxia Wang, Junfa He, Zhaoxuan Sheng

Author Affiliations +

Proceedings Volume 5642, Information Optics and Photonics Technology; (2005) https://doi.org/10.1117/12.574410
Event: Photonics Asia, 2004, Beijing, China

Abstract

A new kind of optoelectronic hybrid joint transform correlator is proposed in this paper, it fulfills edge enhancement preprocessing for the input images in the spatial field and subtraction modifying and exponential filtering for the joint power spectrum in frequency field with electronic method. The influence of different edge enhancement operators (Log, Roberts, Sobel and Prewitt) and exponential parameters value on correlation result is studied. When the values of two exponential parameters are matched, the correlator can produce excellent correlation output. Computer simulation results show that the proposed correlator can eliminate the strong zero-order component in the output plane, enhance and sharpen the auto-correlation peak and restrain cross-correlations between each input targets. So the correlation recognition ability of this hybrid system is quite better than the classical joint transform correlator, it can be used for multi-object recognition.

Citation Download Citation

Hongxia Wang, Junfa He, and Zhaoxuan Sheng "Optoelectronic hybrid joint transform correlator based on power spectrum subtracting and exponential filtering", Proc. SPIE 5642, Information Optics and Photonics Technology, (11 January 2005); https://doi.org/10.1117/12.574410

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

Includes PDF, HTML & Video, when available