In image pre-processing, it introduces two steps of image pre-processing that is image distortionrectification and image noise restraint.
在图像预处理中，介绍了图像预处理中的两个步骤，即图像的几何校正和噪声点的抑制。
2
It can be seen from model experiment that the Total Harmonic Distortion (THD) of the current in the three-phase rectification circuit can be reduced from 30% to about 10%.
通过模拟试验证明，三相整流电路交流侧电流中的谐波含量由原来约30%下降到约10%。
3
The form of distortion of work piece was studied, and the software rectification method of three coordinates measurement data was put forward accordingly.