Generalized algebraic scene-based nonuniformity correction algorithm

Bradley M. Ratliff, Majeed M. Hayat, J. Scott Tyo

Research output: Contribution to journalArticle

58 Scopus citations

Abstract

A generalization of a recently developed algebraic scene-based nonuniformity correction algorithm for focal plane array (FPA) sensors is presented. The new technique uses pairs of image frames exhibiting arbitrary one- or two-dimensional translational motion to compute compensator quantities that are then used to remove nonuniformity in the bias of the FPA response. Unlike its predecessor, the generalization does not require the use of either a blackbody calibration target or a shutter. The algorithm has a low computational overhead, lending itself to real-time hardware implementation. The high-quality correction ability of this technique is demonstrated through application to real IR data from both cooled and uncooled infrared FPAs. A theoretical and experimental error analysis is performed to study the accuracy of the bias compensator estimates in the presence of two main sources of error.

Original languageEnglish (US)
Pages (from-to)239-249
Number of pages11
JournalJournal of the Optical Society of America A: Optics and Image Science, and Vision
Volume22
Issue number2
DOIs
StatePublished - Feb 2005

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Computer Vision and Pattern Recognition

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