Laser on line without touching, through inductive can get accurate data.
激光对着线不用接触，通过感应就可以得到准确的数据。
2
The laser center line is further detected from the laser stripe through data processing and using alterable detection templates.
利用图像处理和方向模板的方法，在激光条纹的基础上进一步提取激光中心线。
3
Least-square principle method was used to process experimental data and the regression line obtained. The failure mechanism of the He-Ne laser tube under different current has been analyzed.