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Robot Hand-Eye Calibration Using Structure-from-MotionInstitut Français de Mécanique Avancée, BP 265, 63175 Aubière Cedex, Francenicolas.andreff{at}ifma.fr
INRIA Rhône-Alpes and GRAVIR-IMAG, 655, av. de lEurope, 38330 Montbonnot Saint Martin, Franceradu.horaud{at}inrialpes.fr
INRIA Rhône-Alpes and GRAVIR-IMAG, 655, av. de lEurope, 38330 Montbonnot Saint Martin, Francebernard.espiau{at}inrialpes.fr In this paper, we propose a new flexible method for hand-eye calibration. The vast majority of existing hand-eye calibration techniques require a calibration rig that is used in conjunction with camera pose estimation methods. Instead, we combine structure-from-motion with known robot motions, and we show that the solution can be obtained in linear form. The latter solves for both the hand-eye parameters and the unknown scale factor inherent with structure-from-motion methods. The algebraic analysis that is made possible with such a linear formulation allows investigation of not only the well-known case of general screw motions but also of such singular motions as pure translations, pure rotations, and planar motions. In essence, the robot-mounted camera looks to an unknown rigid layout, tracks points over an image sequence, and estimates the camera-to-robot relationship. Such a self-calibration process is relevant for unmanned vehicles, robots working in remote places, and so forth. We conduct a large number of experiments that validate the quality of the method by comparing it with existing ones.
Key Words: self-calibration structure-from-motion Sylvester equation
The International Journal of Robotics Research, Vol. 20, No. 3,
228-248 (2001) This article has been cited by other articles:
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