Graphical User Interfaces for Digital-Image Frequency Analysis

Abstract

Frequency analysis plays an important role in the area of visual research. The application described in this technical memorandum provides a graphical user interface that simplifies loading, analyzing, and storing the results of common frequency analysis tasks. The application allows the user to load image files and compute: a 2-D discrete Fourier transform (DFT) of the image, a polar transform (orientation and radial spatial frequency) of the DFT, or a 1-D modulation verses spatial frequency plot produced by averaging over specified orientations of the polar transform. The outlined analysis can also be performed on a subsection of the input image. The subsection of the input image can also be multiplied by a Gaussian window to reduce edge effects.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 2006
Accession Number
ADA462496

Entities

People

  • Chi-feng Tai
  • George A. Geri
  • James P. Gaska

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Data Analysis
  • Digital Images
  • Directories
  • Discrete Fourier Transforms
  • Frequency
  • Government Procurement
  • Governments
  • Graphical User Interface
  • Military Research
  • Modulation
  • Orientation (Direction)
  • Spreadsheet Software
  • Two Dimensional
  • User Interface

Fields of Study

  • Engineering
  • Physics

Readers

  • Approximation Theory.
  • Computer Vision.
  • Database Systems and Applications