Ms. Zeying Wang Profile

Zeying Wang

at BeiHang

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Proceedings Article | 5 November 2014 Paper

Modeling of polarimetric BRDF characteristics of painted surfaces

Ying Zhang, Zeying Wang, Huijie Zhao

Proceedings Volume 9273, 92731X (2014) https://doi.org/10.1117/12.2073635

KEYWORDS: Atmospheric modeling, Polarization, Solar radiation models, Polarimetry, Sensors, Bidirectional reflectance transmission function, Scattering, Atmospheric particles, Radiative transfer, Light scattering

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In this paper a pBRDF (polarimetric Bidirectional Reflectance Distribution Function) model of painted surfaces coupled with atmospheric polarization characteristics is built and the method of simulating polarimetric radiation reaching the imaging system is advanced. Firstly, the composition of the radiation reaching the sensor is analyzed. Then, the pBRDF model of painted surfaces is developed according to the microfacet theory presented by G. Priest and the downwelled skylight polarization is modeled based on the vector radiative transfer model RT3. Furthermore, the modeled polarization state of reflected light from the surfaces was achieved through integrating the directional polarimetric information of the whole hemisphere, adding the modeled polarimetric factors of incident diffused skylight. Finally, the polarimetric radiance reaching the sensor is summed up with the assumption that the target-sensor path is assumed to be negligible since it is relatively short in the current imaging geometry. The modeled results are related to the solar-sensor geometry, atmospheric conditions and the features of the painted surfaces. This result can be used to simulate the imaging under different weather conditions and further work for the validation experiments of the model need to be done.

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