Ellipse fitting method
|
It can reduce the error in the measurement process with high precision. |
During the fitting process, the number of iterations is variable and it takes a lot of time. |
Due to interference of factors such as position and angle, the extracted edge contour is elliptical. Or the calibration block is elliptical. |
Symmetry method
|
The principle is simple and easy to understand, and the accuracy is high. |
It is necessary to select multiple locations for testing, and to obtain an average value, which takes a lot of time. |
Suitable for circular rotating platforms. Or a circular calibration block. The point cloud obtained by scanning has higher precision. |
Plane fitting
|
The operation is simple, no need to manually paste the mark points, and the speed is fast. |
The accuracy is low. |
Suitable for circular rotating platforms. Or a circular calibration block. |