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。
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.
提出了一种基于图像一阶、二阶统计特性的自适应可见光图像对比度增强方法。
Based on the first and the second order of image statistics characteristics, the adaptive visible image contrast enhancement method is presented.
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