| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a visual examination device capable of accurately performing the judgment of a flaw and the classification of the flaw with respect to the flaw image detected from a printed image and capable of classifying the flaw image into a plurality of kinds. <P>SOLUTION: This visual examination device is equipped with a flaw image detector 20 for detecting the flaw image from the photographed image acquired by an imaging device 10 and a flaw classifier 30 for extracting a plurality of kinds of feature quantities from the flaw image and classifying the flaw image into a plurality of preliminarily prescribed kinds on the basis of the combination of the feature quantities. The flaw classifier 30 is equipped with a together formed histogram forming part 42 for forming as together formed histogram on the basis of the combination of the brightnesses between a plurality of points in the flaw image, a feature extraction circuit 40 for subjecting the flaw image to filtering processing to extract a feature and analyzing the together formed histogram image to extract a feature, a feature quantity extraction circuit 60 for extracting a plurality of kinds of the feature quantities from the features obtained by the feature extraction circuit and a flaw classification circuit 70 for classifying the flaw image into a plurality of the preliminarily prescribed kinds on the basis of the combination of a plurality of kinds of the feature quantities obtained by the feature quantity extraction circuit. <P>COPYRIGHT: (C)2008,JPO&INPIT |
