Apparatus for tracing contours of segmented regions

Details Apparatus for tracing contours of segmented regions Apparatus for tracing contours of segmented regions

1995-12-28

1998-05-26

Jankus, Almis R.

Computer graphics processing and selective visual display system

Computer graphics processing

Shape generating

382242, 382266, 382316, G06T 920

Patent

active

057573824

ABSTRACT:
An apparatus for tracing contours of segmented regions in an image includes a zero masking unit to produce a closed contour loop for each of the segmented regions, a tracing circuit for sequentially assigning each of the non-zero masked pixels on the closed contour loop as a tracing pixel, comparing the tracing pixel with a set of its adjacent pixels located at a rightward, an upward, a leftward and a downward directions with respect to the tracing pixel to select one of the adjacent pixels having a luminance level identical to that of the tracing pixel and updating the tracing pixel with the selected adjacent pixel with until the updated tracing pixel coincides with the tracing pixel selected first.

REFERENCES:
patent: 5025478 (1991-06-01), Morris et al.
patent: 5265173 (1993-11-01), Griffin et al.
patent: 5271093 (1993-12-01), Hata et al.
patent: 5572603 (1996-11-01), Koike
patent: 5621819 (1997-04-01), Hozumi
Serra, Introduction to Mathematical Morphology, Computer Vision, Graphics and Image Processing, v. 35, n. 3, pp. 283-305, 1986.

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