Shape coding method and shape decoding method

Details Shape coding method and shape decoding method Shape coding method and shape decoding method

1998-06-11

2000-06-20

Tadayon, Bijan

Image analysis

Image compression or coding

Shape, icon, or feature-based compression

382239, G06K 900

Patent

active

060786957

ABSTRACT:
A shape coding method of coding an object shape signal indicating a prescribed object shape in an image display signal, includes coding the object shape signal for each unit region of a prescribed size on a display screen to generate a coded shape bit stream, and decoding a signal which is in the middle of the coding to generate a locally decoded shape signal; analyzing the locally decoded shape signal for each unit region, and deciding at least one of a type of shape post-processing of the locally decoded shape signal for making an object shape obtained from the locally decoded shape signal smooth and whether to perform the shape post-processing to the locally decoded shape signal, in accordance with an analysis result; and outputting one of the locally decoded shape signal to which prescribed shape post-processing has been performed and the locally decoded shape signal to which the shape post-processing has not been performed, as a coding shape signal for use in coding a signal other than the object shape signal in the image display signal.

REFERENCES:
patent: 5608458 (1997-03-01), Chen et al.
patent: 5886742 (1999-03-01), Hibi et al.

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