| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fin inspection method of the core of a heat exchanger. Ž<P>SOLUTION: This fin inspection method comprises steps for: allowing an imaging device to image the core of the heat exchanger equipped with a fin and a tube, and allowing an image processing device to input and store image data; setting a first region in the image data, in which an image of the entire core is captured, and setting a second region in which an image of at least a portion of all of the tubes is captured so as to identify the positional information of the tubes; setting a third region for fin detection between adjacent tubes, based on the identified position information of the tubes; performing dynamic binarization and noise removal in the third region to obtain an image of the fins, and identifying from the image of the fins the edge position information of the fins, along the long direction of the tubes; and performing statistical processings of the pitch intervals, based on the edge positional information of the fins, and discriminating the failures. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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