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Applying machine vision technique to inspect surface defects of rollers

Xian Wu  
A experimental device for surface defect inspection of rollers by machine vision technique is introduced in this paper. In the device, a 512 bits SSPD array is adopted as the panoramic shooting apparatus. The surface of roller can be fully scanning expansed by special mechanism device and the two dimension image information gained will be sent to PC/AT microprocessor for freatment. Three types of image treatment meathods are introduced as follows; multi-segment average method, secondary back ground treatment method and partial operator treatment method. Using above calculation methods, the inspection of surface defects of rollers with different accuracy can be better solved.
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