WANG Xiang-jun, HAN Shuang-lai. A high speed camera calibration method in coordinate measurement of bomb-fall and its precision analysis[J]. Optics and precision engineering, 2005, 13(6): 686-690.
WANG Xiang-jun, HAN Shuang-lai. A high speed camera calibration method in coordinate measurement of bomb-fall and its precision analysis[J]. Optics and precision engineering, 2005, 13(6): 686-690.DOI:
For the application environment and the necessary precision in vision coordinate measurement of bomb-fall
a corresponding method was proposed which just calibrate two key camera parameters: the focal length and the horizontal angle of the optical axis. By analyzing the coordinate calculation model
a linear calibration equation was presented
in which multiple vision sensors can derive their parameters at one time when getting two known coordinate points (target). Through analysis of precision
the optimum location of the target was given. The total errors were synthesized and the theoretical error values were obtained on every point in the measuring area. At last
the experimental results were given. The results show that the method is practical and simple for algorithm analysis
and is suitable for wide-range vision measurement
especially for field application. In the application of inspecting a
f
400 m area from 1 200 m away
the method can ensure that the coordinate measuring error is less than 0.3 m.
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references
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