Proceedings Article | 12 December 2018
KEYWORDS: Polarization, Atmospheric modeling, Light scattering, Atmospheric particles, Scattering, Imaging systems, Air contamination, Rayleigh scattering, Image processing, Data modeling
With the continuous research of polarization technology, how to apply polarization enhancement to time-varying scene has become a difficult problem at present. This problem is reduced to the fast and accurate acquisition of atmospheric polarization transmission characteristics.This method can obtain polarization transmission parameters by multi-scale particle modeling, laser polarization state measurement and scene polarization information extraction. It can provide a solution for the design of polarization enhancement system by combining the characteristics of various methods. Firstly, the multi-scale particle air transmission is modeled, the composition and transmission law of particles are analyzed, the transmission model is established, and the haze particles are classified by microimaging. Then, the polarization data of the atmosphere are measured by laser transmission, and three kinds of color laser are selected, and the influence of the atmosphere on the polarization state is measured in conjunction with the polarizer. The three colors cover the visible light range, and can get the typical polarization characteristics of atmospheric transmission. Besides, we use camera polarization imaging to extract the polarization state of atmospheric transmission. Through the combination imaging of multi cameras and multi polarizers, polarization transmission data of polarized state parameters and distance are obtained. Finally, based on the combination of the three methods, we analyze the results of atmospheric polarization transmission. The atmospheric propagation model provides the change rule. The laser polarization state can get the typical fast changing transmission data, and the atmospheric background imaging can get the steady state transmission result. Through multi information fusion, the laser polarization state based data and the particle transmission model are combined to obtain the wide band transmission law, and the image extraction results are corrected to realize the atmospheric transmission analysis. Using the technical route proposed in this paper, a prototype of atmospheric polarization transmission analysis system is designed. As the key component of the polarization enhancement imaging device, the integrated design of hardware and software is carried out. It can be applied to the use of polarization imaging in time-varying scenes, which has a guiding significance for improving the effect of polarization imaging.
