Image analysis – Histogram processing – For setting a threshold
Patent
1982-02-18
1985-02-05
Boudreau, Leo H.
Image analysis
Histogram processing
For setting a threshold
382 34, G06K 962
Patent
active
044981899
ABSTRACT:
In a pattern matching method, the input pattern of a character is compared with each of a plurality of standard patterns to detect similarities and differences by counting the number of pattern elements which are or are not matched with each other. To do this, a high-speed comparator stores a plurality of comparing data in a memory, which is driven by a clock pulse train. The memory produces a plurality of sequence signals during each time interval when the clock pulses of a number responding to a plurality of comparing data are applied thereto. The first or last produced sequence signal is detected from among the plurality of sequence signals and is used to extract the maximum or minimum data.
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patent: 3428946 (1969-02-01), Batcher
patent: 3636519 (1972-01-01), Heath
patent: 3760356 (1973-09-01), Srivastava
patent: 4288782 (1981-09-01), Bader et al.
Boudreau Leo H.
Nippon Electric Co. Ltd.
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