由光影明暗度获得物体表面形状的快速算法

A Fast Algorithm of Recovering Surface Shape From Shading

由Netwon Raphson迭代方法 ,提出了一种新的由光影明暗度恢复物体表面形状的快速算法 此算法的思路为先将表面梯度 (p ,q)离散近似 ,然后再对深度Z(x ,y)基础上的反射函数实施线性化 ,从而大大降低了传统算法的复杂性 ,提高了速度 ,同时又保持了所恢复的物体表面形状的准确性 实验证明此算法是有效的 .

A new fast algorithm is presented for recovering shape from shading based on Netwon-Raphson iteration algorithm. In the new algorithm, first the discrete approximations for surface normal (p,q) are taken, and then the reflectance function in depth Z(x,y) is linearized. The new mothod reduces the complexity and improves the speed of operation greatly. And the results of tests show that the algorithm is efficient.