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Linear Filter Theory

  • J. M. Lloyd
Part of the Optical Physics and Engineering book series (OPEG)

Abstract

There is frequent need in thermal imaging practice to describe the responses of a system to various signals, to predict spatial resolution, and to devise image enhancement schemes. A tool which is useful for this purpose is linear filter theory1,2, a branch of Fourier transform analysis used for analyzing the signal response of the class of linear, invariant, stable systems. Linear filter theory is applicable to optical, electro-optical, mechanical, and electronic devices. It originated in the description of electrical networks and servomechanisms and was extended to optical systems. Linear filter theory forms an indispensible part of image analysis and is necessary to every thermal imaging system design evaluation.

Keywords

Spatial Frequency Impulse Response Point Spread Function Modulation Transfer Function Entrance Pupil 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1975

Authors and Affiliations

  • J. M. Lloyd
    • 1
  1. 1.Radiation CenterHoneywell Inc.LexingtonUSA

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