Device for coding still images

Details Device for coding still images Device for coding still images

1995-02-13

1996-06-04

Boudreau, Leo

Image analysis

Image segmentation

Region labeling

382197, 382204, 382242, G06K 946

Patent

active

055240640

ABSTRACT:
A device for coding still images has a device for segmenting the images into homogeneous regions whereto a specific label is attached, and a device for coding the contents of the contour. The contour coding device has a sub-assembly which detects contours for each regions, for each region successively considered, it detects points which are to form a series of control points and transforming the part of the contour joining two successive control points into a straight segment. Then the validity criterion is verified. If the criterion is not met, at least one supplementary control point is introduced between the two control points and so on until it is. The transformation is applied until the contour loop is completely closed.

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patent: 5212739 (1993-05-01), Johnson
Kunt et al., "Recent Results In High-Compression Image Coding", IEEE Transactions on Circuits and Systems, vol. CAS-34, No. 11, Nov. 1987, pp. 1306-1336.

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