Directly digital detection theory is used, at the same time applying circuit for auto identification of material and single chip processor, the intelligent function of the sensor is realized.
该传感器利用直接数字化检测原理，并运用物料自动识别电路和单片机使传感器具有智能化的功能。
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。
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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