| 摘要 |
PROBLEM TO BE SOLVED: To improve the detection sensitivity of a defective shape by processing image information with an image reading means, extracting singular points on a shape contour, calculating a package size from the singular points with an image processing means, and comparing the obtained package size with a package size reference value inputted in advance. SOLUTION: A shape of the winding thread portion of a package is read by an image reading means 2, and the electric signal from the image reading means 2 is converted into the image information signal suitable for the succeeding image process by an image take-in circuit 3. The image information signal from the image reading means 2 is binarized by a binarization circuit 4, and feature points of the binarized image information are extracted by a feature point extraction circuit 5. Sizes of various sections of the package are calculated from the coordinates of the feature points by a size measurement circuit 6, and the measured sizes of various sections of the package are compared with reference values set in advance by a comparison circuit 7. The quality judgment of the package shape on multiple items can be made accurately and quickly.
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