Pattern recognition apparatus
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United States of America Patent
Stats
-
Nov 8, 1988
Grant Date -
N/A
app pub date -
Feb 22, 1984
filing date -
Feb 23, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pattern recognition apparatus for recognizing a pattern derived from image data of an outline of an object region is disclosed. The apparatus comprises means for identifying the object region from the input image data, means for extracting outline pixels of the object region, means for polygon-approximating the object region based on a position relationship among the outline pixels to determine vertex coordinates of the approximation polygon, means for determining characteristic data representing a position and an attitude of the region based on the vertex coordinates, and means for superimposing the polygon-approximated object region pattern on a dictionary pattern based on the characteristic data and, determining a common region of the patterns to determine the identity of the patterns. High speed and highly reliable pattern matching is attained.
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Cited Art Landscape
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