Apparatus for detecting pattern of crest line
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United States of America Patent
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-
Aug 28, 1990
Grant Date -
N/A
app pub date -
Jun 3, 1988
filing date -
Jun 11, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In an apparatus for detecting a pattern of crest lines according to the present invention, an object area to be treated is mechanically divided into a plurality of picture elements (Ej), and the direction of crest lines such as a dactylogram can be easily detected by a simple calculation consisting of addition, subtraction, multiplication, and division, by using evaluated shading values in a series (Si) of picture elements, each unit area (UA) consisting of some picture elements of all picture elements in the object area. Therefore, even when the crest lines are cut off, crushed, or branched off, on the way thereof, the direction of the crest lines can be correctly detected.
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