Robust Vision-Based Registration Utilizing Bird's-Eye View with User's View

  • Authors:
  • Kiyohide Satoh;Shinji Uchiyama;Hiroyuki Yamamoto;Hideyuki Tamura

  • Affiliations:
  • -;-;-;-

  • Venue:
  • ISMAR '03 Proceedings of the 2nd IEEE/ACM International Symposium on Mixed and Augmented Reality
  • Year:
  • 2003

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Abstract

This paper describes new vision-based registrationmethods utilizing not only cameras on a user'shead-mounted display but also a bird's-eye view camerathat observes the user from an objective viewpoint. Twonew methods, the Line Constraint Method (LCM) andGlobal Error Minimization Method (GEM), are proposed.The former method reduces the number of unknownparameters concerning the user's viewpoint by restrictingit to be on the line of sight from the bird's-eye view. Theother method minimizes the sum of errors, which is the sumof the distance between the fiducials on the view and thecalculated positions of them based on the current viewingparameters, for both the user's view and the bird's-eye view.The methods proposed here reduce the number of pointsthat should be observed from the user's viewpoint forregistration, thus improving the stability. In addition totheoretical discussions, this paper demonstrates theeffectiveness of our methods by experiments in comparisonwith methods that use only a user's view camera or abird's-eye view camera.