The BRDF Modeling Technology Of Light Scattering Characteristics Of Targets And Earth Surface

This paper studies on BRDF measuring and optimizing modeling of target samples in the bands of visible light. Some models of targets are presented and classified. Based on Torrance- Sparrow model, we give a modified five-parameters one. To some specific instance, the model is simplified and the calculation is fast too. Combining basic Genetic Algorithm and Simulated Annealing Algorithm, we get a global optimal searching algorithm called Simulated Annealing Genetic Algorithm. Two and three dimension data of samples are optimized through this algorithm. The parameters are obtained and the 3-D BRDF distribution are structured. Data of target sample in the band of visible light are measured and analyzed and the five-parameters model is extended to the visible light band. To many target sample data the ends are content and the 3-D BRDF distribution is structured too.