Image analysis – Histogram processing – For setting a threshold
Patent
1987-07-21
1989-04-18
Boudreau, Leo H.
Image analysis
Histogram processing
For setting a threshold
382 1, 358107, 29DIG78, 209906, 250560, 406 83, G06K 900
Patent
active
048233960
ABSTRACT:
A device is provided for automatically inspecting a fastener for defects prior to its installation in an assembly operation. The fastener is propelled by air or gravity along a feed line. The inspection device is connected in the feed line and has a cam member that is positionable into the fastener's path of travel for blocking it at a certain position. A television camera produces a video image of the stopped fastener, which shows the fastener's actual dimensions. A computer then compares the actual dimensions with the fastener's desired, which are prestored in the computer's memory. If the two substantially match, the fastener is known to be acceptable for installation.
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Conference: Proceedings of the Society of Photo Optical Instrumentation Engineers. Washington, D.C., U.S.A. (Apr. 19-20, 1979).
Boudreau Leo H.
Couso Jose L.
Kaser Bruce A.
The Boeing Company
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