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    • 3. 发明公开
    • VERFAHREN ZUM AUTOMATISIERTEN NACHWEIS EINES DEFEKTES AN EINER OBERFLÄCHE EINES FORMTEILS
    • VERFAHREN ZUM AUTOMATISIERTEN NACHWEIS EINES DEFEKTES EINEROBERFLÄCHEEINES FORMTEILS
    • EP2406055A1
    • 2012-01-18
    • EP10711986.9
    • 2010-03-10
    • Polymer Competence Center Leoben GmbH
    • GRUBER, Dieter P.
    • B29C45/76B07C5/342G01N21/88
    • B29C45/7686B29C2945/7616B29C2945/76163B29C2945/7629B29C2945/76464B29C2945/76943G01N21/8851
    • The invention relates to a method for detecting a defect on a surface of a molded part, in particular an injection-molded part made of plastic, wherein the surface of the molded part is optically measured and a measurement result is evaluated in an automated manner in order to detect a defect, where applicable. According to the invention, at least one two-dimensional image is taken of the molded part in the form of an intensity matrix having n times m pixels using a camera, whereupon the intensity matrix is optionally converted into a further matrix, whereupon the intensity matrix or optionally the further matrix is folded using at least one function describing a contrast perception characteristic and/or a resolving power of a human eye, whereupon with respect to a predetermined threshold value the matrix obtained in this manner is used to calculate whether an existing defect, where applicable, is recognized by a human eye.
    • 本发明涉及一种用于检测模制件表面上的缺陷的方法,特别是用塑料制成的注模部件,其中模制件的表面被光学测量,并且测量结果以自动方式评估 在适用的情况下检查缺陷。 根据本发明,使用照相机以具有n倍m个像素的强度矩阵的形式获取至少一个二维图像,随后强度矩阵可选地转换成另外的矩阵,于是强度矩阵 或者可选地使用描述人眼的对比感知特性和/或分辨力的至少一个函数来折叠另外的矩阵,于是相对于预定阈值,以这种方式获得的矩阵用于计算现有缺陷 在适用的情况下,被人眼识别。