Defect detection method, device and system based on machine vision

The invention discloses a defect detection method, device and system based on machine vision, and belongs to the technical field of visual detection. The defects existing in an existing traditional manual mode are overcome. The defect detection method comprises the following steps: acquiring origina...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HONG TIANHAO, LUO WEI, LI PENGTANG, WANG LIYAN
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention discloses a defect detection method, device and system based on machine vision, and belongs to the technical field of visual detection. The defects existing in an existing traditional manual mode are overcome. The defect detection method comprises the following steps: acquiring original color images of a standard workpiece and a test workpiece, and processing the images to obtain detection parameters; the boundary contour length is compared with a threshold value, and workpieces with surface edge defects are screened out; and comparing the boundary contour of the workpiece with the surface edge defect with a standard boundary contour pattern, determining the defect position, and completing detection. The device and the method are suitable for surface edge defect detection of workpieces with rough edges. 基于机器视觉的缺陷检测方法、装置以及系统,属于视觉检测技术领域。解决了现有传统的人工方式存在的缺陷。所述缺陷检测方法包括:采集标准工件和测试工件的原始彩色图像,并进行图像处理,获得检测参数;将边界轮廓长度与阈值比较,筛选出有表面边缘缺陷的工件;将有表面边缘缺陷的工件的边界轮廓与标准边界轮廓图形对照,确定缺陷位置,完成检测。本发明适用于对具有粗糙边缘的工件进行表面边缘缺陷检测。