To solve the problem in which: in a prior art technology, automatic measurement is not possible without incorrect measurement including count omission or overlapping count of the number of tubes in a binding.
An end face in a Z-direction of a binding 11 of tubes 10 is photographed under line illumination 2 by X-direction movement 4 of a line camera 1. A composite image, and then a binary image having difference in luminance between pipe wall parts and hollow parts from the obtained imaging data 31 and movement amount data 32. Scanning in the X-direction and stepping at Y-direction position for every scanning are performed to the generated images, so as to recognize the hollow parts from a high luminance part or a low luminance part, and count the number of the recognized hollow parts.
| JP2011138310A | 2011-07-14 | |||
| JPH02260091A | 1990-10-22 | |||
| JP2003006609A | 2003-01-10 | |||
| JPS63149781A | 1988-06-22 | |||
| JPH04238592A | 1992-08-26 | |||
| JP2011138310A | 2011-07-14 | |||
| JPH02260091A | 1990-10-22 | |||
| JP2003006609A | 2003-01-10 | |||
| JP2003294652A | 2003-10-15 |
Eiichi Kobayashi
Suzuki Yoko