理学 表面反射模型 释 bidirectional reflection distribution function; BRDF 双向反射分布函数 双向反射分布函数是一个定义光如何在不透明表面反射的四维函数，其输入是入射方向和出射方向，输出为沿着出射方向反射的光能与从入射方向到达表面的辐照度之间的比例。
计算机应用 计算机辅助设计与图形学 释文 bidirectional reflection distribution function, BRDF 双向反射分布函数
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