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COMPARISON BETWEEN ROTATION CENTER CALIBRATION METHODS
| calibration method | Advantage | Disadvantage | Applicable situation |
|---|---|---|---|
| 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. |