Abstract
An unique world coordinates based global calibration method is proposed, in which double theodolites system coordinate frame is taken as the general measurement coordinate frame and the system is used to directly sample calibrations points for each vision sensor in the multi-vision inspections system. Thus the whole sensors in the inspection system can finish global calibration by one time, and no intermediate-coordinate-frame is needed. Therewith, transformation times of coordinate frame decreases and calibration course is facilitated. Measurement accuracy analysis of the image coordinates and object coordinates is performed on the double theodolites system respectively, and the range of sampling calibration points for gaining high measurement accuracy of theodolite in practice is provided. Finally, global calibration experiment on a real multi-structured light stripe vision inspection system is conducted with root mean square (RMS) error of not more than 0.24 mm.
| Original language | English |
|---|---|
| Pages (from-to) | 1268-1272 |
| Number of pages | 5 |
| Journal | Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics |
| Volume | 32 |
| Issue number | 11 |
| State | Published - Nov 2006 |
Keywords
- Accuracy analysis
- Calibration
- Theodolite
- Vision inspection
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