| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for the visual inspection of a long article capable of performing the visual inspection of the long article without performing image processing and capable of increasing a visual inspection speed, and a device for the visual inspection of the long article. SOLUTION: An irradiation line position data group, which includes calculating the position data in the height direction of an irradiation line L, at a plurality of predetermined positions in the width direction of imaging data is formed at each piece of imaging data, a plurality of the average values of the position data in the height direction are calculated, on the basis of the position data in the height direction adjacent to each other by two in the width direction of the imaging data; the value, which is obtained by subtracting one of two average values of the position data in the height direction adjacent to each other in the width direction of the imaging data from the other one of them, is calculated at a plurality of places in the width direction of the imaging data; the position in the width direction of imaging data, wherein the subtracted value exceeds a predetermined reference value and exceeding quantity is maximum, is calculated and it is determined whether a predetermined number of the positions continue in an imaging sequence to detect that the recessed damage K or protruded part that extends in the longitudinal direction of a hose H is formed on the outer peripheral surface of the hose H. COPYRIGHT: (C)2010,JPO&INPIT
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