A focusing evaluation function based on gray scale segmentation is proposed.
提出一种新的基于灰度分割的调焦评价函数。
The focusing evaluation function of the auto-focusing system is consistent with the energy of high frequency of the image.
图像对焦越准确，高频分量的能量越多，系统的对焦评价函数反映了图像高频分量的能量。
Choosing auto focusing evaluation function for images is a key factor for passive auto focusing system of automatic microscope.
图像自动聚焦评价函数的选择是全自动控制显微镜无源方式自动聚焦系统的关键问题。
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