Accession Number : ADA303025

Title :   Bandpass Spatial Filtering and Information Content.

Descriptive Note : Final rept. 1 Mar-4 Jun 85,

Corporate Author : HARRY G ARMSTRONG AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB OH

Personal Author(s) : Kuperman, Gilbert G.

PDF Url : ADA303025

Report Date : JUL 1985

Pagination or Media Count : 50

Abstract : Gaussian weighted, bandpass spatial filters were applied to pictures of tactical fighter aircraft through two dimensional, Fourier Transform processing. Subjects were required to rate image interpretability and report their confidence. No significant difference was found between aircraft for interpretability or confidence. Filter center frequency was found to be highly significant (p < 0.01), and the difference between subjects was found to be significant (p < 0.05) with respect to interpretability. The main effect of filters was found to be significant (p < 0.05) for the dependent measure of confidence. A predictor equation was developed though linear regression to relate filter center frequency and image interpretability (r-sq = 0.5623).

Descriptors :   *IMAGE PROCESSING, *SPATIAL FILTERING, FOURIER TRANSFORMATION, MEASUREMENT, PREDICTIONS, IMAGES, QUALITY CONTROL, JET FIGHTERS, VISUAL PERCEPTION, BANDPASS FILTERS, TACTICAL AIRCRAFT, CONFIDENCE LEVEL, DIGITAL FILTERS.

Subject Categories : Target Direction, Range and Position Finding
      Photography

Distribution Statement : APPROVED FOR PUBLIC RELEASE