Device for displaying feature of contour image

Details Device for displaying feature of contour image Device for displaying feature of contour image

1980-09-10

1982-11-30

Boudreau, Leo H.

Communications: electrical

Digital comparator systems

3401463AE, 358107, G06K 948

Patent

active

043618308

ABSTRACT:
The x-y coordinates are determined of a multiplicity of points set at very small intervals of a fixed value on a contour line, the coordinates of a selected number of points on either side of one (central point) of the aforementioned multiplicity of points are averaged, the two points corresponding to the two sets of averaged coordinates are connected by a straight line, a perpendicular line is drawn to this straight line from the aforementioned central point, and the distance from the central point to the foot of the perpendicular line on the straight line is calculated. This distance varies with the change in the shape of the contour line. By finding this distance with respect to each of the points on the contour line and displaying the distances found, there can be obtained a figure indicative of features of the shape of the contour image.

REFERENCES:
patent: 2838602 (1958-06-01), Sprick
patent: 3112468 (1963-11-01), Kamentsky
patent: 3748644 (1973-07-01), Tisdale
patent: 3987412 (1976-10-01), Morrin
patent: 4156231 (1979-05-01), Edamatsu et al.
patent: 4163214 (1979-07-01), Komori et al.
patent: 4179684 (1979-12-01), Cheng

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