Polarization visual enhancement technique for LWIR microgrid polarimeter imagery

Bradley M. Ratliff, J. Scott Tyo, Wiley T. Black, James K. Boger, David L. Bowers

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations


Division of focal plane (DoFP) polarimeters are a particular class of imaging device that consists of an array of micropolarizers integrated upon a focal plane array sensor (FPA). Such devices are also called microgrid polarimeters and have been studied over the past decade with systems being designed and built in all regions of the optical spectrum. These systems are advantageous due to their rugged, compact design and ability to obtain a complete set of polarimetric measurements during a single frame capture. One inherent disadvantage of DoFP systems is that each pixel of the FPA sensor makes a polarized intensity measurement of a different scene point. These spatial measurements are then used to estimate the Stokes vectors across the scene. Since each polarized intensity measurement has a different instantaneous field-of-view (IFOV), artifacts are introduced that can degrade the quality of estimated polarization imagery. Here we develop and demonstrate a visual enhancement technique that is able to reduce false polarization caused by IFOV error while preserving true polarization content within the Stokes parameter images. The technique is straight-forward conceptually and is computationally efficient. All results are presented using data acquired from an actual LWIR microgrid sensor.

Original languageEnglish (US)
Title of host publicationPolarization
Subtitle of host publicationMeasurement, Analysis, and Remote Sensing VIII
StatePublished - 2008
EventPolarization: Measurement, Analysis, and Remote Sensing VIII - Orlando, FL, United States
Duration: Mar 18 2008Mar 19 2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherPolarization: Measurement, Analysis, and Remote Sensing VIII
Country/TerritoryUnited States
CityOrlando, FL


  • Focal Plane Array
  • Image Processing
  • Long-wave Infrared
  • Microgrid
  • Polarimetry
  • Polarinieter
  • Remote Sensing
  • Signal Enhancement

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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