Figure pre-processing device

Details Figure pre-processing device Figure pre-processing device

1977-05-12

1978-09-19

Thesz, Joseph M.

Communications: electrical

Digital comparator systems

G06K 900

Patent

active

041157605

ABSTRACT:
The figure reducers of a figure pre-processing device are connected in series. A plurality of previously determined deletion judging patterns are classified into a plurality of groups and the picture signal pattern is compared with the previously determined judging patterns wherein the point focused on is excluded from a group in accordance with patterns rotated a predetermined angle around a point on a figure to be scanned. The classified groups are supplied to the series-connected figure reducers as a deletion judging pattern for deleting a point in each of the figure reducers.

REFERENCES:
patent: 3846754 (1974-11-01), Oka et al.
patent: 3940737 (1976-02-01), Beun
patent: 3999161 (1976-12-01), Van Bilzem et al.
patent: 4003024 (1977-01-01), Riganati et al.
patent: 4034344 (1977-07-01), Saraga et al.

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