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空心圆柱端面缺陷的快速视觉检测

DOI: 10.11834/jig.20091037

Keywords: 视觉检测,空心圆柱,Hough变换,端面缺陷,小尺寸

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Abstract:

提出了一种用于空心圆柱端面缺陷快速检测的新方法。为适应不同尺寸工件以及工件不同端面的几何特征,采用入射角可变的矩形LED阵列作为光源,通过CCD进行图像采集并进行适当的预处理,约化图像中的有用信息以提高检测效率。工件端面检测采用优化的Hough变换法实现标准圆拟合,通过计算实际像素点至拟合圆的径向偏移量以获得缺陷像素点,实现端面缺陷定量评价。实验结果表明,该方法具有较高的检测速度与精度,可用于空心圆柱等小尺寸工件端面质量的在线检验,提高现有的生产线效率。

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