Method and apparatus for encoding a contour of an object in a vi

Details Method and apparatus for encoding a contour of an object in a vi Method and apparatus for encoding a contour of an object in a vi

1997-01-23

1998-11-17

Boudreau, Leo H.

Image analysis

Image compression or coding

Contour or chain coding

382243, G06K 900

Patent

active

058388290

ABSTRACT:
A method encodes a current contour of an object in a video signal based on a previous contour thereof by extending the current contour over neighboring pixels thereto. In the encoded method, a displacement between the extended and the previous contours is found to set the displacement as a motion vector for the current contour. The previous contour is overlapped onto the extended contours based on the motion vector to thereby provide an overlapped previous contour and an overlapped extended contour. A mismatch between the overlapped contours is detected and encoded to thereby generate encoded error data, wherein, the encoded contour data includes the encoded error data and the motion vector.

REFERENCES:
patent: 5086489 (1992-02-01), Shimura
patent: 5117287 (1992-05-01), Koike et al.
patent: 5271093 (1993-12-01), Hata et al.
patent: 5457754 (1995-10-01), Han et al.

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