Bidirectional reflection distribution function modeling of material surface in different temperature

Based on the Planck's law and integrality the directional hemisphere reflectivity (DHR) and the Kirchhoffs law. And referred to the Torrance-Sparrow model and the five-parameter semi-empirical model, a new Bidirectional reflection distribution function model (BRDF) is developed in different temperature of material surface, this model will be applicable for various materials.