Method and system for coding and decoding a sequence of segmente

Image analysis – Image compression or coding – Interframe coding

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382238, 348413, G06K 936

Patent

active

061577456

ABSTRACT:
The invention relates to an image sequence coding method comprising, after a segmentation of the images into partitions with associated labels, the main steps of coding the contours of the regions sent in intra-frame mode, generating a compensated partition, and computing from said compensated partition and the current one an error partition that is then coded. While reducing the computational load, this method, that allows to transmit information about a time-varying partition with the help of the motion of the pixels, is preferably carried out by means of an encoding sub-assembly coprising an intra coding device (181), a compensating device (182), and an inter coding device (183) extracting and coding partition errors defined by an extraction of error regions where compensated and current labels are different.

REFERENCES:
patent: 4951140 (1990-08-01), Ueno et al.
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Chuang Gu et al., "Contour Simplification and Motion Compensated Coding", Nov. 1995, pp. 279-296.
"A High-Compression Image Coding Method Based on a New Segmentation Technique", L .H. Chen and Y. K. Chen, Proceedings of the National Science Council, Republic of China, Part: Physical Science and Engineering, vol. 16, No. 5, Sep. 1992, pp.403-421.
"Motion and Region Overlapping Estimation for Segmentation-Based Video Coding" of M. Pardas and P. Salembier, IEEE International Conference on Image Processing, Austin, Texas (USA), Nov. 1994, vol. 11, pp. 428-432.
"Time Recursive Segmentation of Image Seq;uences" of M. Pardas and P. Salembier, Eusipco 94, VIIth European Signal Processing Conference, Edinburgh, U.K., Sep. 13, 1994.
"Region Based Motion Analysis for Cideo Coding at alow Bitrates", H. Sanson, Proceedings of MPEG4 Seminar, Paris (France), Mar. 1994.
Spiral Image Compression by an Unrestricted Chain Coding Method, P.N. Nichol and R. J. Miller, 5th International Conference on Image Processing and its Applications, UK, Jul. 4-6, 1995, pp. 564-568.

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