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Proceedings Paper

Motion and disparity estimation using rate-distortion theory for very low bit rate and multiview image sequence coding
Author(s): Dimitrios Tzovaras; Michael G. Strintzis
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Paper Abstract

A rate-distortion framework is used to define a displacement vector-field estimation technique for use in video coding. This technique achieves maximum reconstructed image quality under the constraint of a target bitrate for the coding of the vector sequence. Use of this technique is evaluated for two application areas in which the need for high compression of displacement vector fields in particularly acute. The first is motion-field coding for very low bit rate image sequence transmission as in videophone applications. The second application area is coding for the transmission of disparity fields. This is needed for the generation at the receiver of intermediate viewpoints through spatial interpolation. It is also needed in a number of other applications requiring accurate depth knowledge, including 3D medical data transmission and transmission of scenes to be postprocessed using depth-keyed segmentation. Experimental results illustrating the performance of the proposed technique in these application areas are presented and evaluated.

Paper Details

Date Published: 10 January 1997
PDF: 8 pages
Proc. SPIE 3024, Visual Communications and Image Processing '97, (10 January 1997); doi: 10.1117/12.263247
Show Author Affiliations
Dimitrios Tzovaras, Aristotle Univ. of Thessaloniki (Greece)
Michael G. Strintzis, Aristotle Univ. of Thessaloniki (Greece)

Published in SPIE Proceedings Vol. 3024:
Visual Communications and Image Processing '97
Jan Biemond; Edward J. Delp, Editor(s)

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