Improved Accuracy of On-Line Tire Profile Measurement using a Novel On-Line Calibration

K. Khalili and S.M. Nazemsadat (Iran)


3D Scanning, Laser Scanning, 3D Measurement, On-Line Continuous Scanning


Precise tire tread profile measurement can improve quality and deliver significant cost saving over raw material. Current systems provide on-line profile measurements with accuracy of not better than 0.15 mm. Improved accuracy increases quality and widen the applications of profile measurement systems. In this paper a simple laboratory on-line profile measurement system has been developed. A laser light source with Gaussian distribution and sheet of light pattern has been used. A novel on-line calibration along with some other adjustments has made higher accuracies achievable. The system uses a digital camera to capture high resolution images of object. Preprocessing provides a sharply distributed pattern. Images are further processed using image processing techniques and the depth information is extracted using Triangulation method. A brief description of the systems hardware and software are given. The results of experiments are reported.

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