Apparatus for encoding/decoding an image signal having a still o

Details Apparatus for encoding/decoding an image signal having a still o Apparatus for encoding/decoding an image signal having a still o

1995-09-18

1997-10-07

Boudreau, Leo

Image analysis

Image compression or coding

Polygonal approximation

382242, 382233, G06K 939, G06K 948

Patent

active

056756690

ABSTRACT:
An encoding system effectively reduces the substantial amount of data for transmission by way of employing three encoding channels which perform a compression process for individually extracting and coding the contour of the approximated foreground region consisting of a still object, the boundary pixel values of the pixels located on the contour and the leveled-down/trimmed pixel data corresponding to the contour and the boundary pixel values. Further, a decoding system for use with the encoding system serves to effectively perform a decoding process for a coded image signal by using three decoding channels containing the decoding path for restoring pixel information including a set of reconstructed boundary pixel values and reconstructed contour information.

REFERENCES:
patent: 5295201 (1994-03-01), Yokohama
patent: 5592228 (1997-01-01), Dachiku et al.
patent: 5608458 (1997-03-01), Chen et al.

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