Method for recognizing concavities in an image subject to charac

Details Method for recognizing concavities in an image subject to charac Method for recognizing concavities in an image subject to charac

1991-10-29

1992-10-27

Couso, Jose L.

Image analysis

Histogram processing

For setting a threshold

382 21, G06K 948

Patent

active

051596458

ABSTRACT:
An image processing method for finding concavity of a configuration comprising steps; arranging boundary pixels of the configuration according to chain order with indicating top points on convex hull of the configuration; and determining that a concavity is defined by the boundary pixels when a boundary pixel of a chain code is found, which chain code indicates a concavity.

REFERENCES:
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patent: 4597101 (1986-06-01), Kishimoto et al.
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patent: 4876728 (1989-10-01), Roth
patent: 4949281 (1990-08-01), Hillenbrand et al.
patent: 4982342 (1991-01-01), Moribe et al.
patent: 5018211 (1991-05-01), Jaffe et al.
patent: 5050222 (1991-09-01), Lee
Rafael C. Gonzalez, Paul Wintz; Digital Image Processing, Second Edition, Nov. 1987, pp. vii, 397-398.

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