Method and apparatus for encoding a contour of an object by usin

Details Method and apparatus for encoding a contour of an object by usin Method and apparatus for encoding a contour of an object by usin

1997-06-04

1999-04-20

Couso, Jose L.

Image analysis

Image compression or coding

Contour or chain coding

G06K 936

Patent

active

058964665

ABSTRACT:
A method for encoding a video signal of a contour of an object based on an iterated refinement technique determines a plurality of primary vertices on the contour; and calculates a displacement for each contour segment to produce displacements on all pairs of two adjacent primary vertices. After determining a dynamic range as a criterion for encoding pixel data on the contour based on the displacements, the method searches a larger contour segment which is a contour segment whose number of bits required to encode pixel data thereon is larger than that of the dynamic range, and inserts one or more secondary vertices on the larger contour segment based on the dynamic range.

REFERENCES:
patent: 5635986 (1997-06-01), Kim
patent: 5691769 (1997-11-01), Kim
patent: 5737449 (1998-04-01), Lee
patent: 5754703 (1998-05-01), Kim
patent: 5757971 (1998-05-01), Kim
patent: 5764808 (1998-06-01), O'Connell et al.
patent: 5828790 (1998-10-01), Kim
patent: 5838829 (1998-11-01), Kim

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