Acta Photonica Sinica ›› 2019, Vol. 48 ›› Issue (6): 611004-0611004.doi: 10.3788/gzxb20194806.0611004

• Imaging Systems • Previous Articles     Next Articles

Calibration Method of Micro-polarizer Array Long-wave Infrared Imaging System

YAN Yu1, XU Xiao-hong1, FAN Zhi-guo1, ZHANG Qiang1, JIN Hai-hong1,2   

  1. 1. School of Computer and Information, Hefei University of Technology, Hefei 230601, China;
    2. School of Electronic and Information Engineering, Anhui Jianzhu University, Hefei 230601, China
  • Received:2019-02-18 Online:2019-06-25 Published:2019-04-01
  • Supported by:

    The National Natural Science Foundation of China (No. 61571177), Fundamental Research Funds for the Central Universities General Projects of Natural Science Research at Provincial Level in Colleges and Universities of Anhui Province (No.KJ2018JD12)

Abstract:

To improve the precision of micro-polarizer array long-wave infrared imaging system, for the incident light's polarimetric information calculation problem, a polarimetric calibration method is proposed based on error analysis. By determining the relationship between the pixel level response values and the incident light power, the generalized optical transmittance is introduced to derive and achieve the calculation of the extinction ratio and polarization orientation, further obtain the values of elements in the micro-polarizer Mueller matrix independent of large scale equations. A method to compute polarimetric information in one super pixel which contains fixed position blind pixels is proposed, contribute to getting the incident light's polarimetric information precisely. The experiments show that this calibration method can effectively reduce error interference, and improve the detection accuray of micro-polarizer array long-wave infrared imaging system.

Key words: Micro-polarizer array, Polarimetry, Blind pixel, Polarimetric calibration, Long-wave infrared

CLC Number: