Linear Polarization Demosaicking for Monochrome and Colour Polarization Focal Plane Arrays

Simeng Qiu*, Qiang Fu, Congli Wang, Wolfgang Heidrich

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

Division-of-focal-plane (DoFP) polarization image sensors allow for snapshot imaging of linear polarization effects with inexpensive and straightforward setups. However, conventional interpolation based image reconstruction methods for such sensors produce unreliable and noisy estimates of quantities such as Degree of Linear Polarization (DoLP) or Angle of Linear Polarization (AoLP). In this paper, we propose a polarization demosaicking algorithm by inverting the polarization image formation model for both monochrome and colour DoFP cameras. Compared to previous interpolation methods, our approach can significantly reduce noise induced artefacts and drastically increase the accuracy in estimating polarization states. We evaluate and demonstrate the performance of the methods on a new high-resolution colour polarization dataset. Simulation and experimental results show that the proposed reconstruction and analysis tools offer an effective solution to polarization imaging.

Original languageEnglish (US)
Pages (from-to)77-89
Number of pages13
JournalComputer Graphics Forum
Volume40
Issue number6
DOIs
StatePublished - Sep 2021

Keywords

  • monochrome and colour images
  • polarization camera
  • polarization demosaicking
  • visualization

ASJC Scopus subject areas

  • Computer Graphics and Computer-Aided Design

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