Multiresolution interblock interpolation in direct volume rendering

  • Authors:
  • Patric Ljung;Claes Lundström;Anders Ynnerman

  • Affiliations:
  • Norrköping Visualization and Interaction Studio, Linköping University;Center for Medical Image Analysis and Visualization, Linköping University and Sectra Imtec AB;Norrköping Visualization and Interaction Studio, Linköping University

  • Venue:
  • EUROVIS'06 Proceedings of the Eighth Joint Eurographics / IEEE VGTC conference on Visualization
  • Year:
  • 2006

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Abstract

We present a direct interblock interpolation technique that enables direct volume rendering of blocked, multiresolution volumes. The proposed method smoothly interpolates between blocks of arbitrary block-wise level-of-detail (LOD) without sample replication or padding. This permits extreme changes in resolution across block boundaries and removes the interblock dependency for the LOD creation process. In addition the full data reduction from the LOD selection can be maintained throughout the rendering pipeline. Our rendering pipeline employs a flat block subdivision followed by a transfer function based adaptive LOD scheme. We demonstrate the effectiveness of our method by rendering volumes of the order of gigabytes using consumer graphics cards on desktop PC systems.