Image analysis – Pattern recognition – Feature extraction
Patent
1996-03-26
1999-11-16
Boudreau, Leo H.
Image analysis
Pattern recognition
Feature extraction
382113, 382197, G06K 948
Patent
active
059871733
ABSTRACT:
A drawing is read by a scanner to create raster data. A labeling process is executed for the data to extract a contour line for each pattern element resultant from the labeling process to produce contour line data and region data to manage, in a tree structure, information related to a circumscribed rectangle of each line segment of the contour line. When the operator picks by a pointing device a predetermined region on the screen of a display and a pair of line segments for recognition, there is retrieved region data corresponding to the specified region. After extracting contour line data associated with the retrieved region data, a center line creation process is executed according to the extracted contour line data.
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Kohno Hideki
Moriuchi Naoki
Sakai Hidenori
Boudreau Leo H.
Mehta Bhavesh
Nippon Steel Corporation
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