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The paper presents a viewpoint planning strategy which automatically guides a movable camera from an arbitrary position to a position where the optical axis is perpendicular to a plane spanned by any two intersecting edges on a polyhedral object, i.e., a junction. In related work it is common to use the changing length of edge segments to control such alignment, but we demonstrate the use of the apparent angle between the edge segments of the junction. Based on the control on the apparent angle we achieve robustness as well as independence of distance to the object and focal length. The strategy is able to determine the true angle of a junction with an accuracy of approximately 1/spl deg/, and align with an accuracy of approximately 6/spl deg/.
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Claus Madsen
Aalborg University
Henrik I. Christensen
University of California, San Diego
IEEE Transactions on Pattern Analysis and Machine Intelligence
KTH Royal Institute of Technology
Aalborg University
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Madsen et al. (Wed,) studied this question.
synapsesocial.com/papers/6a20ab7cfb15484991e51822 — DOI: https://doi.org/10.1109/34.574798
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