A Study of the Fourier Transform Method of Image Restoration

Abstract

The report examines the Fourier transform method of restoring degraded images of point objects. The principal conclusion supported by the study is that the major problem in restoring these images is the presence of poles in the restored image spectrum. A series of figures showing three restored image quality criteria graphed as functions of image degradation, for a computer modeled degraded imaging system, are presented to support this conclusion. Also included is a thorough mathematical analysis of the restored image spectrum.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1973
Accession Number
AD0770321

Entities

People

  • R. S. Davidson Ii

Organizations

  • Ohio State University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Computers
  • Convolution Integrals
  • Diffraction
  • Digital Computers
  • Distortion
  • Equations
  • Fast Fourier Transforms
  • Frequency
  • Frequency Bands
  • Image Restoration
  • Mathematical Analysis
  • Mathematics
  • Refractive Index
  • Spectra
  • Strehl Ratio
  • Transfer Functions
  • Turbulence

Fields of Study

  • Physics

Readers

  • Approximation Theory.
  • Image Processing and Computer Vision.