Contour line characteristic point detecting apparatus

Details Contour line characteristic point detecting apparatus Contour line characteristic point detecting apparatus

1992-06-23

1994-09-06

Nguyen, Phu K.

395141, G06F 1516

Patent

active

053455479

ABSTRACT:
A contour line characteristic point detecting apparatus arranged so that direction codes of respective tracing points are obtained by contour line data, and then, their directional difference values are found by a directional difference value calculating part. Thus, permutational direction codes are obtained through addition of the directional difference value at the tracing point, to the direction code at the tracing starting point or to the permutational direction code at the previous tracing point by an adder. Thus, by inputting this permutational direction code into a calculation table through delay registers of a plurality of stages, the linear component detection and corner detection can be effected without depending on the directions.

REFERENCES:
patent: 4905166 (1990-02-01), Schuerman
patent: 5220650 (1993-06-01), Barkans
patent: 5231697 (1993-07-01), Yamada

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