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A Multi-view Camera Model for Line-Scan Cameras with Telecentric Lenses

Steger, Carsten; Ulrich, Markus

Abstract:
We propose a novel multi-view camera model for line-scan cameras with telecentric lenses. The camera model supports an arbitrary number of cameras and assumes a linear relative motion with constant velocity between the cameras and the object. We distinguish two motion configurations. In the first configuration, all cameras move with independent motion vectors. In the second configuration, the cameras are mounted rigidly with respect to each other and therefore share a common motion vector. The camera model can model arbitrary lens distortions by supporting arbitrary positions of the line sensor with respect to the optical axis. We propose an algorithm to calibrate a multi-view telecentric line-scan camera setup. To facilitate a 3D reconstruction, we prove that an image pair acquired with two telecentric line-scan cameras can always be rectified to the epipolar standard configuration, in contrast to line-scan cameras with entocentric lenses, for which this is possible only under very restricted conditions. The rectification allows an arbitrary stereo algorithm to be used to calculate disparity images. We propose an efficient algorithm to compute 3D coordinates from these disparities. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000139381
Veröffentlicht am 29.10.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Zukunftscampus (CAMPUS)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 0924-9907, 1573-7683
KITopen-ID: 1000139381
Erschienen in Journal of Mathematical Imaging and Vision
Verlag Springer
Nachgewiesen in Scopus
Web of Science
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