Hand to sensor calibration: A geometrical interpretation of the matrix equation AX=XB

  • Authors:
  • Irene Fassi;Giovanni Legnani

  • Affiliations:
  • ITIA-CNR, Viale Lombardia 20/A, 20131 Milano, Italy;Università di Brescia—Dip. Ing. Meccanica, Via Branze 38, 25123 Brescia, Italy

  • Venue:
  • Journal of Robotic Systems
  • Year:
  • 2005

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Abstract

In this paper, the matrix equation AX=XB used for hand to sensor calibration of robot-mounted sensors is analyzed using a geometrical approach. The analysis leads to an original way to describe the properties of the equation and to find all of its solutions. It will also be highlighted why, when multiple instances AiX=XBi (i=1,2,...) of the equation are to be solved simultaneously, the system is overconstrained. Finally, singular cases are also discussed. © 2005 Wiley Periodicals, Inc.