Accession Number:

ADD020335

Title:

Fuzzy Logic Technique to Determine Search Time and Probability of Detection for Targets of Interest in Background Scenes

Descriptive Note:

Patent, Filed 24 May 1999, patented 23 Jul 2002

Corporate Author:

TACOM RESEARCH DEVELOPMENT AND ENGINEERING CENTER WARREN MI

Report Date:

2002-07-23

Pagination or Media Count:

15.0

Abstract:

A method of determining the visibility of a target in a background uses search time as the output. A set of images of the target in the background is made, and selected input variables in each image are measured. The input variables relate to target size, target juxtaposition relative to the viewers location, luminance of the target and luminance of the background scene. One version of our method additionally uses wavelet edge points as an input variable. Each input variable, as well as the output variable, has several applicable membership functions by which membership values are assigned to the variables. Choosing membership functions for variables is done by fuzzy rules. Applying the fuzzy rules and membership functions produces multiple values for the output variable. These values are defuzzified to obtain a crisp end result. This result can disqualify proposed target designs or to help select among several good designs of the target.

Subject Categories:

  • Operations Research

Distribution Statement:

APPROVED FOR PUBLIC RELEASE