Boots – shoes – and leggings
Patent
1985-04-24
1991-11-26
Lall, Parshotam S.
Boots, shoes, and leggings
364572, 36472401, 382 31, 356430, 356238, 356239, G01N 2188
Patent
active
050687999
ABSTRACT:
A method and apparatus for detecting flaws in continuous web material illuminated by a light source and optically scanned to produce a digitalized electronic image of said material. The digitized image data representative of the continuous web material is stored in memory. The image data is also applied to a digital signal processor which identifies areas of the image which represent potential flawed areas of the continuous web material. A variety of spatial matched filters are employed to detect the flaws. Information concerning the locations of the potential flaws is transferred to a computer which analyzes in detail portions of the stored image in the vicinity of the identified areas. The processing performed in the computer verifies the presence of flaws in the material.
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Float Kenneth W.
Lall Parshotam S.
Trans V. N.
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