The system uses a high resolution CCD image acquisition, real-time image processing, receive aperture parameters, and determine whether the quality plate shadow Mask qualified.

• 该系统采用了高分辨率CCD采集荫罩图像，在计算机内对荫罩图像做实时处理，得到孔径参数，并判定荫罩板质量是否合格；