面粗糙度增大时，经过特定光学器具后镜面反射与漫反射的减少量的比值降低，从而实现对物体表面粗糙度的检测. 通过实

验得到了样本的粗糙度，并对其可靠性进行了检测，确认了该项技术的可行性. 对应于整体的粗糙度和小面积的破损程度可

以通过改变数据处理区域大小来实现，较大区域的截取能够体现整体的粗糙度，较小的区域能够检测破损的程度.

polarizer is combined with the polarization photography technology and Matlab processing to separate the specular

reflection and the diffuse reflection of the obtained photograph. With the surface roughness increasing，the ratio of

the reduction of the specular reflection and the diffuse reflection is reduced. This result can be used to detect of the

surface roughness of the object.