| 摘要 |
A wire breakage detecting method, being a method of detecting breakage of wire bonded on a chip of an electronic component by image processing, includes the step of observing a point of the wire as a pixel of one color of binary images of black and white, observing while rotating plural pixels around the present observation pixel being observed in a specific direction, moving the observation point of the wire by detection of the pixel of the same color as said color of the binary images, moving the observation point continuously, and detecting breakage of wire by inversion of the moving direction of the observation point.
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