双向反射分布函数测量系统的误差分析与标定

Error Analysis and Calibration of BRDF Measure System

阐述了双向反射分布函数的定义及其测量原理。从理论上分析了产生误差的原因,对影响系统测量精度的误差因素进行了定量分析,使用均方根误差计算方法,提供了一个BRDF的误差分析方法。最后,利用实验标定的方法对理论分析结果进行了验证。实验标定的结果与理论分析结果相符,为解决对BRDF测量系统进行有效评估提出了新的思路和方法。

The BRDF definition and its measure principals were developed. The forming reasons of error was analyzed theoretically; the error factors which influence the system measure accuracy were analyzed quantitatively. A BRDF error analysis method was introduced by using the RMS error calculation method. Finally, the analyzed theory result was verified by the experimental calibration method. The analyzed theory result matches well with the experimental calibration result, which provides the new method and thinking ways for the effective BRDF system evaluations.