Calibration method of microgrid polarimeters with image interpolation

Zhenyue Chen, Xia Wang, Rongguang Liang

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

Microgrid polarimeters have large advantages over conventional polarimeters because of the snapshot nature and because they have no moving parts. However, they also suffer from several error sources, such as fixed pattern noise (FPN), photon response nonuniformity (PRNU), pixel cross talk, and instantaneous field-of-view (IFOV) error. A characterization method is proposed to improve the measurement accuracy in visible waveband. We first calibrate the camera with uniform illumination so that the response of the sensor is uniform over the entire field of view without IFOV error. Then a spline interpolation method is implemented to minimize IFOV error. Experimental results show the proposed method can effectively minimize the FPN and PRNU.

Original languageEnglish (US)
Pages (from-to)995-1001
Number of pages7
JournalApplied optics
Volume54
Issue number5
DOIs
StatePublished - Feb 10 2015

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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