| 摘要 |
PROBLEM TO BE SOLVED: To provide a visual inspection method and device of a long article capable of accurately performing visual inspection. SOLUTION: Irradiated radiation L is imaged every predetermined time while a hose H is moved in the longitudinal direction of each irradiation device 10, position data of the height direction where each position of the width direction of the hose H is made to correspond to the position of the height direction of the irradiated radiation L is extracted from each imaged data, each position data of the height direction is subtraction-processed based on reference data. For preparing an image for examination by arranging the position data of the height direction undergoing the subtraction processing in the imaging order based on predetermined color tone reference, the position data of the height direction as a subtraction processing object and the position data of the height direction before the subtraction processing corresponding to a predetermined number whose imaging order is close to that of the position data of the height direction are averaged for each position of the width direction of the hose H, and reference data is prepared. Therefore, even when the hose H is accompanied by swell, the swell part is canceled from the position data of the height direction. COPYRIGHT: (C)2009,JPO&INPIT
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