The system automatically detects when calibration is required. The 5-minutes calibration process can be easily performed by the operator, with the calibration bar provided.
在需要校准的时候系统可以实现自动监测，操作者使用所提供的校准棒，在五分钟内即可完成校准过程。
This thesis describes the principle and implementation of a level bar calibration system based on image processing and recognition methods.
本文论述了基于数字图像处理和模式识别的水平尺检测系统的原理和实现方法。
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