Recent Progress in Microscan Resolution Enhancement

Abstract

This paper presents experimental results for the Northrop Grumman resolution enhancement and non-uniformity correction algorithms. The results include simulation results using complex images, laboratory measurements of Modulation Transfer Function, Minimum Resolvable Temperature and Noise Equivalent Temperature Difference, and results obtained using microscanned flight data taken with a midwave IR staring sensor. The flight data includes urban and rural environments. These results show that resolution enhancement of greater than 2:1 has been achieved and is only limited by the optical resolution of the sensor. Non-uniformity correction without the use of calibration data is shown to reduce the fixed pattern offset noise to less than the temporal noise, even after temporal integration of multiple frames of data. Analytic models for the MTF are presented using two different assumptions regarding resolution enhancement. Comparison with the laboratory results shows that the effective detector size is reduced in addition to the expected effects of increase in sampling density.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1999
Accession Number
ADA390373

Entities

People

  • William F. O'neil

Organizations

  • Northrop Grumman

Tags

Communities of Interest

  • Air Platforms
  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Algorithms
  • Computations
  • Data Analysis
  • Data Sets
  • Detectors
  • Digital Data
  • Focal Planes
  • Frequency
  • High Resolution
  • Image Processing
  • Image Reconstruction
  • Image Registration
  • Images
  • Measurement
  • Passive Sensors
  • Simulations
  • Two Dimensional

Readers

  • Image Processing and Computer Vision.