Apparatus for detecting containers having a deviating property

Details Apparatus for detecting containers having a deviating property Apparatus for detecting containers having a deviating property

1985-05-03

1987-07-21

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

250223B, H04N 718

Patent

active

046822208

ABSTRACT:
To inspect objects which are symmetrical, as for example the rims of bottles, the video signal representing a field of view within which the rim is imaged is divided into portions which should contain mirror image portions of the rim image. These two image portions are compared electronically to determine the deviation, if any, from such mirror image symmetry. If the deviation is sufficiently great, the object being inspected is earmarked for rejection. The division into image portions is by the top and bottom of a strip of the composite image in which the strip is perpendicular to the raster lines of the field of view and by left- and right-hand portions of the composite image on either side of the strip. The electronic comparison is effected by counting the scanning points along a raster line, line by line, containing the image of the rim and comparing the counts obtained from the two image portions to each other. The image of the rim should be centered within the field of view.

REFERENCES:
patent: 4026414 (1977-05-01), Ellinger
patent: 4293214 (1981-10-01), Ducloux
patent: 4391373 (1983-07-01), Wiggins
patent: 4454542 (1984-06-01), Miyazawa
patent: 4491728 (1985-01-01), Fischer
patent: 4498003 (1985-02-01), Cibis
patent: 4508453 (1985-04-01), Hara et al.
patent: 4528810 (1986-03-01), MacFarlane et al.
patent: 4532650 (1985-07-01), Wihl et al.
patent: 4546247 (1985-10-01), Peyton et al.

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