Calibration Method For Height Measurement Of Object Using Laser Triangulation
Rameshwar Ashok Wagh, Dr. M.S.Panse, Hemant Apte
Keywords: Laser triangulation; machine vision; height measurement; calibration.
ABSTRACT: Machine vision has been adopted in numerous industries since it eliminates need of human involvement and provides considerable accuracy along with splendid speed. Laser triangulation has brought a new era in measurement enabling measurement in third dimension. Still due to nonlinearities present in camera and laser sensor, it is difficult to apply this principle universally for large range of heights. In this regard, a piecewise linear calibration system is proposed in this paper. This system enables the sensor to cover considerably large working range with more precision. Actual set of objects are measured and readings are compared with respect to error and standard deviation.
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