Radiation correction method for infrared polarization imaging system with front-mounted polarizer.

The architecture of imaging polarimeters with front-mounted polarizer generally used in infrared imaging polarimetry has significant influence on the imaging process of the systems and further calculation of the polarization information of the observed scenario. In this study, the imaging process of infrared polarization imaging system with front-mounted polarizer is analyzed, a radiation correction method based on the modified infrared imaging model of such a system is proposed, and both laboratory and outdoor experiments are performed to verify its effect. Experimental results show that the proposed correction method can effectively eliminate the adverse effects of the radiation introduced by front-mounted polarizer, which significantly reduces scene radiation measurement error and improves the calculation accuracy of the polarization information.