Contour extraction apparatus

Details Contour extraction apparatus Contour extraction apparatus

1996-03-22

1999-03-09

Tran, Phuoc

Image analysis

Pattern recognition

Feature extraction

382197, 382107, G06K 948

Patent

active

058811702

ABSTRACT:
The present invention provides a contour extraction apparatus which has an image storing section 1 for storing an image, a contour model storing section 2 for storing a contour model, a contour model transforming section 3 for transforming and shrinking the contour model according to a prescribed rule, a contour model intersection detecting section 4 for detecting a contact or intersection in the contour model, a contour model dividing section 5 for dividing the contour model into contour models based on the detected contact or intersection, and an extraction completion judging section 7 for judging whether or not extraction of the contour of the object has been completed. According to the contour extraction apparatus, even when there are objects whose contours are to be extracted, the contour of the each object can be extracted correctly by predesignating a region only once, or without predesignating a region at all, despite the presence of excessive noise or a discontinuity in the edge.

REFERENCES:
patent: 4783833 (1988-11-01), Kawabata et al.
patent: 5131058 (1992-07-01), Ting et al.
patent: 5471535 (1995-11-01), Ikezawa et al.
patent: 5528703 (1996-06-01), Lee
M. Kass et al., "Snakes: Active Contour Models", IEEE, pp. 259-268 (1987).
S. Araki et al., "Splitting Active Contour Models Based On Crossing Detection and Its Application", Technical Report of IEICE, PRU95-21, (1995-05), pp. 1-8.
S. Araki et al., "A New Splitting Active Contour Model Based on Crossing Detection", ACCV '95 Second Asian Conference on Computer Vision, Dec. 5-8, Singapore, pp. II-346 to II-350.

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