Abstract
Since the current angle measurement had the disadvantage of high energy and cost and it is hard to integrate, a new rotation angle measurement based on machine vision was proposed. A binocular rotation angle measurement algorithm was established based on the theory of binocular 3D measurement and pinhole imaging, using the fitting of a polynomial to correct errors. Cameras are consisted of two CMOS industry camera based on USB, which were stalled on the turntable. And calibrating parameters of camera with Zhang's Calibration. Then the software system was designed by using virtual instrument, and the experiment was finished on the single axis turntable. The experiment result showed that average error after correction was below 0.05° and range was ±60°. This kind of angle measurement method can be used in rotation angle measurement on turntable.
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