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[CMH+01]  Fast Visualization of Object Contours by Non-Photorealistic Volume Rendering

Csebfalvi:2001:FVO (Article)
Author(s)Csébfalvi B., Mroz L., Hauser H., König A. and Gröller E.
Title« Fast Visualization of Object Contours by Non-Photorealistic Volume Rendering »
JournalComputer Graphics Forum (Proceedings of Eurographics 2001, Manchester, UK, sep 2001)
Volume20
Number3
Page(s)452--460
Year2001
AddressOxford
Editor(s)A. Chalmers and T.-M. Rhyne

Abstract
In this paper we present a fast visualization technique for volumetric data, which is based on a recent nonphotorealistic rendering technique. Our new approach enables alternative insights into 3D data-sets (compared to traditional approaches such as direct volume rendering or iso-surface rendering). Object contours, which usually are characterized by locally high gradient values, are visualized regardless of their density values. Cumbersome tuning of transfer functions, as usually needed for setting up DVR views, for example, is avoided. Instead, a small number of parameters is available to adjust the non-photorealistic display. Based on the magnitude of local gradient information as well as on the angle between viewing direction and gradient vector, data-values are mapped to visual properties (color, opacity), which then are combined to form the rendered image (MIP is proposed as the default compositing stragtegy here). Due to the fast implementation of this alternative rendering approach, it is possible to interactively investigate the 3D data, and quickly learn about internal structures. Several further extensions of our new approach, such as level lines are also presented in this paper.

BibTeX code
@article{Csebfalvi:2001:FVO,
  number = {3},
  month = sep,
  optnote = {Also as technical report TR VRVIS 2001 002 at VRVIS},
  optorganization = {},
  author = {Bal{\'a}zs Cs{\'e}bfalvi and Lukas Mroz and Hellwig Hauser and
            Andreas K{\"o}nig and Eduard Gr{\"o}ller},
  optkey = {},
  optannote = {},
  optseries = {},
  editor = {A. Chalmers and T.-M. Rhyne},
  address = {Oxford},
  localfile = {papers/Csebfalvi.2001.FVO.pdf},
  publisher = {NCC Blackwell Ltd},
  journal = EUROGRAPHICS2001,
  doi = {http://dx.doi.org/10.1111/1467-8659.00538},
  citeseer = {http://citeseer.nj.nec.com/csbfalvi01fast.html},
  volume = {20},
  optcrossref = {},
  booktitle = {Proceedings of Eurographics 2001 (Manchester, UK, sep 2001)},
  optstatus = {OK},
  title = {{F}ast {V}isualization of {O}bject {C}ontours by
           {N}on-{P}hotorealistic {V}olume {R}endering},
  abstract = {In this paper we present a fast visualization technique for
              volumetric data, which is based on a recent nonphotorealistic
              rendering technique. Our new approach enables alternative insights
              into 3D data-sets (compared to traditional approaches such as
              direct volume rendering or iso-surface rendering). Object
              contours, which usually are characterized by locally high gradient
              values, are visualized regardless of their density values.
              Cumbersome tuning of transfer functions, as usually needed for
              setting up DVR views, for example, is avoided. Instead, a small
              number of parameters is available to adjust the non-photorealistic
              display. Based on the magnitude of local gradient information as
              well as on the angle between viewing direction and gradient
              vector, data-values are mapped to visual properties (color,
              opacity), which then are combined to form the rendered image (MIP
              is proposed as the default compositing stragtegy here). Due to the
              fast implementation of this alternative rendering approach, it is
              possible to interactively investigate the 3D data, and quickly
              learn about internal structures. Several further extensions of our
              new approach, such as level lines are also presented in this
              paper.},
  year = {2001},
  pages = {452--460},
}

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