Probabilistic 3D Object Recognition

  • Authors:
  • Ilan Shimshoni;Jean Ponce

  • Affiliations:
  • Department of Computer Science and Beckman Institute, University of Illinois, Urbana, IL 61801, USA. ilans@ie.technion.ac.il.;Department of Computer Science and Beckman Institute, University of Illinois, Urbana, IL 61801, USA

  • Venue:
  • International Journal of Computer Vision
  • Year:
  • 2000

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Abstract

A probabilistic 3D object recognition algorithm is presented.In order to guide the recognition process theprobability that match hypotheses between image features and modelfeatures are correct is computed. A model is developed whichuses the probabilistic peaking effect of measured angles andratios of lengths by tracing iso-angle and iso-ratio curves onthe viewing sphere. The model also accounts for various typesof uncertainty in the input such as incomplete and inexact edge detection.For each match hypothesis the pose of the object and thepose uncertainty which is due to the uncertainty in vertexposition are recovered. This is used to find sets of hypotheseswhich reinforce each other by matching features of the sameobject with compatible uncertainty regions. A probabilisticexpression is used to rank these hypothesis sets.The hypothesis sets with the highest rank are output.The algorithm has been fully implemented, and tested on real images.