The relation between the correlation function of intensity variation and surface roughness parameter is derived through analyzing the second-order statistical properties of the speckle image.
分析此散斑图像的二阶统计特性，导出了强度变化的相关函数和表面粗糙度参数之间的关系。
By the means of surface profile equipment, the machined surface was measured and the statistical parameter of surface topography was calculated.
通过表面轮廓仪测量加工试件表面形貌，采用自行研制的表面形貌参数表征系统进行表面形貌统计参数计算。
By the means of surface profile equipment, the machined surface was measured and the statistical parameter of surface topography was calculated.
通过表面轮廓仪测量加工试件表面形貌，采用自行研制的表面形貌参数表征系统进行表面形貌统计参数计算。
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