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Proceedings Paper

An approach to the correspondence problem in the 1-D optical transducers tracking system
Author(s): Qiuting Wen; Jian Wu; Hai Tao; Guangzhi Wang; Datian Ye
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Paper Abstract

Three one-dimensional (1D) optical transducers are known to be effective in determining the spatial coordinates of a target (marker) with higher speed and accuracy compared to the two-dimensional (2D) optical transducers system. But one disadvantage is that it can only position one marker at a time and couldn't solve the correspondence problem when two or more markers are lighted simultaneously, for which reason this tracking system necessitates a markers controlling system and is inconvenient in some applications. This paper proposes an approach to solve the correspondence problem by adding a fourth linear transducer to the current three ones. The geometric model of this system is presented and the constraint for correspondence is deduced. An analysis of the constraint degeneration is given and simulation experiments are conducted under both ideal and error conditions. Experiments show that this approach enables 1D transducers system to perform both active and passive tracking, and its high tracking accuracy is further improved.

Paper Details

Date Published: 24 February 2009
PDF: 9 pages
Proc. SPIE 7169, Advanced Biomedical and Clinical Diagnostic Systems VII, 71691N (24 February 2009); doi: 10.1117/12.816595
Show Author Affiliations
Qiuting Wen, Tsinghua University (China)
Jian Wu, Tsinghua University (China)
Hai Tao, Univ. of California, Santa Cruz (United States)
Guangzhi Wang, Tsinghua University (China)
Datian Ye, Tsinghua University (China)

Published in SPIE Proceedings Vol. 7169:
Advanced Biomedical and Clinical Diagnostic Systems VII
Anita Mahadevan-Jansen; Tuan Vo-Dinh; Warren S. Grundfest M.D., Editor(s)

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