Hardware accelerated displacement mapping for image based rendering

  • Authors:
  • Jan Kautz;Hans-Peter Seidel

  • Affiliations:
  • Max-Planck-Institut für Informatik, Saarbrücken, Germany;Max-Planck-Institut für Informatik, Saarbrücken, Germany

  • Venue:
  • GRIN'01 No description on Graphics interface 2001
  • Year:
  • 2001

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Abstract

In this paper, we present a technique for rendering displacement mapped geometry using current graphics hard-ware.Our method renders a displacement by slicing through the enclosing volume. The α-test is used to render only the appropriate parts of every slice. The slices need not to be aligned with the base surface, e.g. it is possible to do screen-space aligned slicing.We then extend the method to be able to render the intersection between several displacement mapped polygons. This is used to render a new kind of image-based objects based on images with depth, which we call image based depth objects.This technique can also directly be used to accelerate the rendering of objects using the image-based visual hull. Other warping based IBR techniques can be accelerated in a similar manner.