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Proceedings Paper

Joint optimal object shape estimation and encoding
Author(s): Lisimachos P. Kondi; Fabian W. Meier; Guido M. Schuster; Aggelos K. Katsaggelos
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Paper Abstract

A major problem in object oriented video coding and MPEG-4 is the encoding of object boundaries. In our previous work, we presented efficient methods for the lossy encoding of object boundaries which were optimal in the rate distortion sense. In this paper, we extend our work to utilize both the original image and an initial segmentation to obtain the optimal shape representation based on the criteria we impose. THe boundary detection and encoding problems are considered simultaneously. If there is low confidence on the location of the boundary, a large approximation error is allowed when encoding the boundary and vise versa. Experimental results demonstrate the effectiveness of the proposed algorithm.

Paper Details

Date Published: 9 January 1998
PDF: 12 pages
Proc. SPIE 3309, Visual Communications and Image Processing '98, (9 January 1998); doi: 10.1117/12.298329
Show Author Affiliations
Lisimachos P. Kondi, Northwestern Univ. (United States)
Fabian W. Meier, Silicon Graphics (United States)
Guido M. Schuster, Advanced Technologies Research Ctr. (United States)
Aggelos K. Katsaggelos, Northwestern Univ. (United States)

Published in SPIE Proceedings Vol. 3309:
Visual Communications and Image Processing '98
Sarah A. Rajala; Majid Rabbani, Editor(s)

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