Image analysis – Histogram processing – For setting a threshold
Patent
1992-12-23
1995-02-21
Mancuso, Joseph
Image analysis
Histogram processing
For setting a threshold
209536, 348 92, 348128, 382 30, G06K 900
Patent
active
053923596
ABSTRACT:
An apparatus for automatically inspecting abnormalities in the external surface of cylindrical objects. The apparatus inspects the appearance of a cylindrical object using image processing. The apparatus includes a transporter and a CCD camera. The transporter rotates the cylindrical object about an axis of the cylindrical object. The CCD camera picks up images showing the appearance of the inspected cylindrical object. The images include picture elements, and each picture element has a corresponding luminance. The apparatus further includes a controller. The controller generates at least one masking window to mask at least one predetermined portion of at least one image; generates at least one luminance sum for each image by adding, for each image, the luminance of a predetermined number of picture elements in unmasked portions of the image; compares each luminance sum to a predetermined threshold; and judges whether the cylindrical object includes a defect based on a result of each comparison.
REFERENCES:
patent: 4859863 (1989-08-01), Schrader et al.
patent: 4920572 (1990-04-01), Sugita et al.
patent: 5007096 (1991-04-01), Yoshida
patent: 5204911 (1993-04-01), Schwartz et al.
patent: 5214713 (1993-05-01), Juvinall
Fujita Minoru
Futamura Tsuyoshi
Ichiba Kouzou
Suda Hiroyoshi
Japan Tobacco Inc.
Mancuso Joseph
Toshiba Engineering Corporation
LandOfFree
Apparatus for inspecting appearance of cylindrical objects does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for inspecting appearance of cylindrical objects, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for inspecting appearance of cylindrical objects will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1940690