Systems and methods for modeling the impact of a medium on the appearances of encompassed light sources

摘要

The present invention provides systems and methods for modeling the impact of a medium on the appearances of encompassed light sources (30) using a Legendre polynomial series solution to a Radiative Transfer Equation for Spherical Media (RTE-SM) called an Atmospheric Point Spread Function (APSF). It is possible to determine characteristics of the medium causing the multiple scattering of the light from the encompassed light source. For example, by observing a street light in bad weather at night, using the APSF, it is possible to determine whether the bad weather is haze, mist, fog, or rain. Similarly, the APSF may be used to estimate the size of particles in a liquid. It is also possible using the APSF to remove and/or add an effect of the medium (31) on a light source captured in an image (27).