Cylindrical container's inner surface tester

Details Cylindrical container's inner surface tester Cylindrical container's inner surface tester

1992-07-15

1993-08-03

Nelm, David C.

Radiant energy

Photocells; circuits and apparatus

With circuit for evaluating a web, strand, strip, or sheet

250223R, G01N 2186

Patent

active

052331997

ABSTRACT:
The cylindrical container's inner surface tester extracts image information about the opening portion and the deformation of the inner surface of a test cylindrical container through an image recognizing technique, and checks the circularity of the opening portion of the container. According to the image information, it specifies the position of a test cylindrical container as a predetermined position. Since it sequentially checks a series of cylindrical containers, the adjacent point between the containers must be identified. Then, the cylindrical container's inner surface tester identifies the adjacent point of cylindrical containers through calculations and logical operations according to the image information. Likewise, the cylindrical container's inner surface tester extracts a test area of an opening portion of an image of a test cylindrical container according to calculations and logical operations, and performs various processes such as determining the acceptability of the extracted white or black level of an image.

REFERENCES:
patent: 4086497 (1978-04-01), Murray
patent: 4175236 (1979-11-01), Juvinall

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