Calibration for polarization filter array cameras: Recent Advances

A Polarization Filter Array (PFA) camera is an imaging device capable of analyzing the polarization state oflight in a snapshot way. These cameras exhibit spatial variations, i.e. nonuniformity, in their response dueto optical imperfections introduced during the nanofabrication process. Calibration is done by computationalimaging algorithms to correct the data for radiometric and polarimetric errors. In this paper, we review ex-isting calibration procedures, and show a practical implementation result of one of these methods applied to acommercially available PFA camera