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Abstract

The application of transfer functions to map data values to visual properties as, e.g., color and opacity, is a crucial step in direct volume rendering. Due to the complex relationship between the transfer function and the resulting image it is usually extremely difficult to model an appropriate mapping. In this paper we present an advanced transfer function specification scheme for the visualization of medical data. The concept of metadata is used to make the modeling of transfer functions more intuitive. A small number of parameters is sufficient to completely describe a transfer function, thus this specification scheme is suitable for (semi-)automated search techniques.

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@techreport{Castro-1998-TFS,
  title =      "Transfer Function Specification for the Visualization of
                       Medical Data",
  author =     "Silvia Castro and Andreas K{\"o}nig and Helwig
               L{\"o}ffelmann and Meister Eduard Gr{\"o}ller",
  year =       "1998",
  abstract =   "The application of transfer functions to map data values to
               visual properties as, e.g., color and opacity, is a crucial
               step in direct volume rendering.  Due to the complex
               relationship between the transfer function and the resulting
               image it is usually extremely difficult to model an
               appropriate mapping.  In this paper we present an advanced
               transfer function specification scheme for the visualization
               of medical data.  The concept of metadata is used to make
               the modeling of transfer functions more intuitive.  A small
               number of parameters is sufficient to completely describe a
               transfer function, thus this specification scheme is
               suitable for (semi-)automated search         techniques.",
  address =    "Favoritenstrasse 9-11/186, A-1040 Vienna, Austria",
  institution = "Institute of Computer Graphics and Algorithms, Vienna
               University of Technology",
  note =       "human contact: technical-report@cg.tuwien.ac.at",
  month =      mar,
  number =     "TR-186-2-98-12",
  keywords =   "volume rendering, multi-modal and multi-dimensional data v,
               visualization systems, visualization of medical data",
  URL =        "http://www.cg.tuwien.ac.at/research/publications/1998/Castro-1998-TFS/",
}