A Local Interpolator Derived From the Discrete Fourier Transform

Abstract

The discrete Fourier transform is used to obtain an analog of the Nyquist reconstruction formula for a limited number of data points. The resulting interpolator, when applied to the center of a slide window (rather than applied globally, as is usually done with Fourier-related techniques), can extend good interpolation performance to lower data sampling rates than is possible with polynomial interpolators.

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Document Details

Document Type
Technical Report
Publication Date
Apr 30, 1992
Accession Number
ADA251066

Entities

People

  • Robert L. Lucke

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Materials and Manufacturing Processes
  • Space

DTIC Thesaurus Topics

  • Analog Signals
  • Coefficients
  • Digital Images
  • Digital Signal Processing
  • Discrete Fourier Transforms
  • Fourier Series
  • Frequency
  • Frequency Response
  • Image Processing
  • Image Reconstruction
  • Interpolation
  • New York
  • Polynomials
  • Real Numbers
  • Sampling
  • Signal Processing
  • Standards

Fields of Study

  • Engineering

Readers

  • Approximation Theory.