Baseline-based contour coding and decoding method and apparatus

Details Baseline-based contour coding and decoding method and apparatus Baseline-based contour coding and decoding method and apparatus

1997-10-21

1999-10-26

Couso, Jose L.

Image analysis

Image compression or coding

Contour or chain coding

G06K 948

Patent

active

059741872

ABSTRACT:
Baseline-based contour coding and decoding methods are provided. The coding method comprises the steps of determining a baseline of a still image or moving image object and a predetermined sampling interval, sampling the contour of the object according to the baseline and the sampling interval and extracting contour sample data, extracting utmost contour sample data of the object from the contour sample data, and calculating a difference between the utmost contour sample data and the contour sample data and extracting error sample data. Using a characteristics of contour data having a gentle change, the still image contour coding using transformation or the moving image contour coding using transformation and motion estimation guarantees excellent reconstruction even with a small amount of generated bit.

REFERENCES:
patent: 5459828 (1995-10-01), Zack et al.
patent: 5907639 (1999-05-01), Kim

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