基于opencv进行编写的多尺度Log特征区域求取方法，其中还包括灰度图像膨胀的程序(多尺度Log也用到)。代码简单易懂，可结合相关资料进行分析。-Opencv be prepared based on the multi-scale characteristics of the region to strike a Log method, which also includes the expansion of gray-scale image of the program (also use