Advanced High-Quality Maximum Intensity Projection for Volume Visualization

Information

  • Publication Type: Technical Report
  • Workgroup(s)/Project(s): not specified
  • Date: April 1999
  • Number: TR-186-2-99-10
  • Keywords: angiography, Maximum Intensity Projection, Volume Visualization

Abstract

Maximum Intensity Projection (MIP) is a volume rendering technique which is used to extract high-intensity structures from volumetric data. At each pixel the highest data value encountered along the corresponding viewing ray is determined. MIP is commonly used to extract vascular structures from medical MRI data sets (angiography). Due to lack of depth information in MIP images, animation of the viewpoint is frequently used for viewing. Although interactive MIP algorithms exist, the quality of the results is moderate. The generation of high-quality MIP animation loops is computationally expensive with rendering times of several seconds per frame. In this paper we present a fast algorithm for high-quality MIP. Cells of the data set which will never contribute to a MIP due to their neighborhood are removed during a preprocessing step. The remaining cells are stored in a way which improves cache coherency independent of the viewing direction and minimizes the number of required maximum evaluations.

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BibTeX

@techreport{Mroz-1999-Adv,
  title =      "Advanced High-Quality Maximum Intensity Projection for
               Volume Visualization",
  author =     "Lukas Mroz and Helwig L\"{o}ffelmann and Meister Eduard
               Gr\"{o}ller",
  year =       "1999",
  abstract =   "Maximum Intensity Projection (MIP) is a volume rendering
               technique which is used to extract high-intensity structures
               from volumetric data. At each pixel the highest data value
               encountered along the corresponding viewing ray is
               determined. MIP is commonly used to extract vascular
               structures from medical MRI data sets (angiography). Due to
               lack of depth information in MIP images, animation of the
               viewpoint is frequently used for viewing. Although
               interactive MIP algorithms exist, the quality of the results
               is moderate. The generation of high-quality MIP animation
               loops is computationally expensive with rendering times of
               several seconds per frame. In this paper we present a fast
               algorithm for high-quality MIP. Cells of the data set which
               will never contribute to a MIP due to their neighborhood are
               removed during a preprocessing step. The remaining cells are
               stored in a way which improves cache coherency independent
               of the viewing direction and minimizes the number of
               required maximum evaluations.",
  month =      apr,
  number =     "TR-186-2-99-10",
  address =    "Favoritenstrasse 9-11/E193-02, A-1040 Vienna, Austria",
  institution = "Institute of Computer Graphics and Algorithms, Vienna
               University of Technology ",
  note =       "human contact: technical-report@cg.tuwien.ac.at",
  keywords =   "angiography, Maximum Intensity Projection, Volume
               Visualization",
  URL =        "https://www.cg.tuwien.ac.at/research/publications/1999/Mroz-1999-Adv/",
}