·2,447,543篇论文数据，部分数据来源于NoteExpress
Note: J.D Power is a company who does evaluation quality on cars and auto systems.
注：j.d Power是一个评估汽车和汽车系统质量的公司。
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。
Through studying the historical background of the focus detection and principles of optical imaging, the auto focusing system adopts image gradient as the auto focusing evaluation function.
从焦点检测的历史背景出发，结合光学的成像原理，提出了以图像梯度为对焦评价函数的自动调焦技术。
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