First focus the reticle with the image field boundary by turning the eyecup.
首先在图像的边界对准十字线旋转眼杯。
The matching conditions between the transparent radial strip of the reticle and the blur circle of target image is then predicted.
从而预示出调制盘透光辐条和目标像弥散圆的匹配情况。
In addition, image sloping and inherent reticle circle Angle are amended. The ultimate orientation accuracy meets system's need.
同时，针对系统图像倾斜和系统固有的刻线圆周角，进行了适当的修正，使系统最终识别准确度满足要求。
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