Generalization of the Jared-Ennis method to complex transmittance objects for the generation of synthetic discriminant function filters

Encarnacion Pleguezuelos; Ignasi Labastida; Santiago Vallmitjana; Arturo Carnicer

doi:10.1117/12.503705

23 October 2003 Generalization of the Jared-Ennis method to complex transmittance objects for the generation of synthetic discriminant function filters

Encarnacion Pleguezuelos, Ignasi Labastida, Santiago Vallmitjana, Arturo Carnicer

Author Affiliations +

Proceedings Volume 5202, Optical Information Systems; (2003) https://doi.org/10.1117/12.503705
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

In this work we present a generalization to complex transmittance objects of the Jared-Ennis algorithm for the generation of Synthetic Discriminant Function filters (SDFs). The original algorithm consists of the resolution of a nonlinear system of equations by means of an iterative procedure, including a phase adaptation of the filter. The method shown here takes into account the modulation of liquid crystal displays (LCD) both for scene and filter, generalizing the problem to the complex plane. Considering this new method gives a more realistic picture as the LCD modulation gives a complex distribution of the scenes instead of only real values as considered before. For instance, we use a high contrast configuration to display the scenes. Moreover, the addition of new parameters to the problem allows us to consider filters other than the phase-only one. In our case, we use a phase-mostly configuration to display the filter and the metric optimized is the maximum correlation intensity, as in the original method. Simulated results are presented for a two-class problem, as well as experimental results obtained in a VanderLugt correlator. The filters produce the desired correlation response in both cases.

Citation Download Citation

Encarnacion Pleguezuelos, Ignasi Labastida, Santiago Vallmitjana, and Arturo Carnicer "Generalization of the Jared-Ennis method to complex transmittance objects for the generation of synthetic discriminant function filters", Proc. SPIE 5202, Optical Information Systems, (23 October 2003); https://doi.org/10.1117/12.503705

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
10 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Image filtering

Modulation

LCDs

Phase shift keying

Optical correlators

Nonlinear filtering

Transmittance

Show All Keywords

Keywords/Phrases

Search In:

Publication Years