Image analysis – Histogram processing – For setting a threshold
Patent
1985-07-30
1987-10-27
Boudreau, Leo H.
Image analysis
Histogram processing
For setting a threshold
382 25, 382 27, 382 60, G06K 930, G06K 946
Patent
active
047035129
ABSTRACT:
A pattern outline tracking system provides the functions that include scanning an object to be recognized and providing a series of analog video signals, comparing a video signal level with the specific, variable threshold level and providing a binary signal consisting of a sequence of serial bits, holding the binary signal bits as the input image pattern in an image memory, deriving partial patterns sequentially from the serial binary signal bits, each of the partial patterns consisting of a matrix of vertical and horizontal lines each containing specific numbers of pixels, matching the partial patterns against the corresponding reference patterns containing the previously defined starting points to be tracked, holding the address in the image memory for the certain pixel within the partial pattern identified in the matching step as the possible point address for the tracking operation, and tracking the outline of the input image pattern on the image memory in accordance with the possible point address.
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Hisano Atsushi
Kato Michitaka
Masaki Toshimichi
Nakatsuka Nobuo
Saka Kazuhiko
Boudreau Leo H.
Omron Tateisi Electronics Co.
Skinner A. Anne
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