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Representations of 3D objects that incorporate surface markings

  • David Forsyth
  • Charlie Rothwell
Recovery
Part of the Lecture Notes in Computer Science book series (LNCS, volume 825)

Abstract

In many cases, the geometric representation that a recognition system could recover is insufficient to identify objects. When object geometry is simple, it is not particularly distinctive; however, a rich representation can be obtained by mapping the surface markings of the object onto the geometry recovered. If edges are mapped, a representation that is relatively insensitive to the details of lighting can be recovered. Mapping grey levels or color values leads to a highly realistic graphical representation, which can be used for rendering. The idea is demonstrated using extruded surfaces, which consist of a section of a general cone cut by two planes. Such surfaces possess a simple geometry, yet are widespread in the real world. The geometry of an extruded surface is simple, and can easily be recovered from a single uncalibrated image. We show examples based on images of real scenes.

Keywords

Object recognition representation surface markings invariants 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1994

Authors and Affiliations

  • David Forsyth
    • 1
  • Charlie Rothwell
    • 2
  1. 1.Department of Computer ScienceUniversity of IowaIowa City
  2. 2.Oxford University Robotics Research GroupOxford

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