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《Acta Metrologica Sinica》 2007-03
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Developement of Key Technology on Surface Defects Detection System for Steel Strip

ZHANG Hong-tao~1,DUAN Fa-jie~1,DING Ke-qin~2,YE Sheng-hua~1(1.State Key Lab of Precision Measuring Technology & Instruments,Tianjin University,Tianjin 300072,China;2.Centre of Boiler and Pressure Vessel Inspection and Research,Beijing 100013, China)  
In order to satisfy the requirements in broad width,high speed,high resolution for steel strip inspection product line,the key technology on computer vision for steel strip based on linear CCD is discussed.An optical part of surface defect visual inspection system is optimally designed to detect different type defects,and software system is especially designed for real time on-line detection.The edge detection based on gray-statistical characteristic is put forward in allusion to the characteristic of low-contrast and high-noise images,and the method of adaptive threshold to split image is realized.Gray scale and geometric characteristic variables of defects are defined for defect detach according as the gray-statistical characteristic.The model machine has run in the lab.
【Fund】: 国家科技部科研院所专项基金(SY01院所专项-01);; “跨世纪优秀人才支持计划”
【CateGory Index】: TP274.4
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