Non-uniformity correction for division of focal plane polarimeters with a calibration method.

Division of focal plane polarimeters are composed of nanometer polarization elements overlaid upon a focal plane array (FPA) sensor. The manufacturing flaws of the polarization grating and each detector in the FPA having a different photo response can introduce non-uniformity errors when reconstructing the polarization image without correction. A new calibration method is proposed to mitigate non-uniformity errors in the visible waveband. We correct non-uniformity in the form of a vector. The correction matrix and offset vector are calculated for the following correction. The performance of the proposed method is compared with state-of-the-art techniques by employing simulated data and real scenes. The experimental results showed that the proposed method can effectively mitigate non-uniformity errors and achieve better visual results.

[1]  Hao Min,et al.  Modeling and estimation of FPN components in CMOS image sensors , 1998, Electronic Imaging.

[2]  George Gabriel Stokes,et al.  On the Composition and Resolution of Streams of Polarized Light from different Sources , 2009 .

[3]  V. Gruev.  Fabrication of a dual-layer aluminum nanowires polarization filter array. , 2011, Optics express.

[4]  David B. Chenault,et al.  A division of aperture MWIR imaging polarimeter , 2005, SPIE Optics + Photonics.

[5]  J Scott Tyo,et al.  Review of passive imaging polarimetry for remote sensing applications. , 2006, Applied optics.

[6]  B. Drévillon,et al.  Broadband Division-of-Amplitude Polarimeter Based on Uncoated Prisms. , 1998, Applied optics.

[7]  A. Pierangelo,et al.  Ex-vivo characterization of human colon cancer by Mueller polarimetric imaging. , 2011, Optics express.

[8]  R. Chipman,et al.  Liquid crystal polymer full-stokes division of focal plane polarimeter. , 2012, Optics express.

[9]  H. Craighead,et al.  Liquid-crystal micropolarizer array for polarization-difference imaging. , 2002, Applied optics.

[10]  Viktor Gruev,et al.  Evaluation of calibration methods for visible-spectrum division-of-focal-plane polarimeters , 2013, Optics & Photonics - Optical Engineering + Applications.

[11]  Viktor Gruev,et al.  Image interpolation methods evaluation for division of focal plane polarimeters , 2011, Defense + Commercial Sensing.

[12]  Shuai Fang,et al.  Image dehazing using polarization effects of objects and airlight. , 2014, Optics express.

[13]  Viktor Gruev,et al.  Bilinear and bicubic interpolation methods for division of focal plane polarimeters. , 2011, Optics express.

[14]  J Scott Tyo,et al.  Dead pixel replacement in LWIR microgrid polarimeters. , 2007, Optics express.

[15]  J Scott Tyo,et al.  Interpolation strategies for reducing IFOV artifacts in microgrid polarimeter imagery. , 2009, Optics express.

[16]  V. Gruev,et al.  Characterization of a visible spectrum division-of-focal-plane polarimeter. , 2012, Applied optics.