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Proceedings Paper

Fast hybrid block/region-based algorithm for object tracking
Author(s): Frederic D. Jordan; Markus Schuetz; Murat Kunt
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Paper Abstract

This paper presents a technique to segment and track a region of interest in a video sequence. The presented technique starts with a spatio-temporal contour extraction. This contour extraction is performed by mixing information from a spatial gradient and a temporal differentiator. A block segmentation is then applied on the image, and within each block the contour part is approximated by a straight line segment. These contour approximations are then further quantized by a vector quantization technique, using a predefined codebook. In order to close and smooth the region of interest contour, an interpolation based on hermite polynomials is performed on the set of discrete quantized contour parts. Finally, the tracking process is performed using an addition-removal of blocks containing contour parts by testing their possible belonging to the polynomial contour. This testing is done by using a blurred version of the polynomial contour in order to be able to track deformations in the object. The initial guess for tracking is given manually by an end-user.

Paper Details

Date Published: 17 January 1997
PDF: 12 pages
Proc. SPIE 2915, Video Techniques and Software for Full-Service Networks, (17 January 1997);
Show Author Affiliations
Frederic D. Jordan, Swiss Federal Institute of Technology (Switzerland)
Markus Schuetz, Swiss Federal Institute of Technology (Switzerland)
Murat Kunt, Swiss Federal Institute of Technology (Switzerland)

Published in SPIE Proceedings Vol. 2915:
Video Techniques and Software for Full-Service Networks
Andrew G. Tescher; Tzi-cker Chiueh, Editor(s)

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