Interpolation strategies for reducing IFOV artifacts in microgrid polarimeter imagery

Bradley M. Ratliff, Charles F. Lacasse, J. Scott Tyo

Research output: Contribution to journalArticlepeer-review

151 Scopus citations


Microgrid polarimeters are composed of an array of micro- polarizing elements overlaid upon an FPA sensor. In the past decade systems have been designed and built in all regions of the optical spectrum. These systems have rugged, compact designs and the ability to obtain a complete set of polarimetric measurements during a single image capture. However, these systems acquire the polarization measurements through spatial modulation and each measurement has a varying instantaneous field-of-view (IFOV). When these measurements are combined to estimate the polarization images, strong edge artifacts are present that severely degrade the estimated polarization imagery. These artifacts can be reduced when interpolation strategies are first applied to the intensity data prior to Stokes vector estimation. Here we formally study IFOV error and the performance of several bilinear interpolation strategies used for reducing it.

Original languageEnglish (US)
Pages (from-to)9112-9125
Number of pages14
JournalOptics Express
Issue number11
StatePublished - May 25 2009

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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