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  <doc>
    <id>5209</id>
    <completedYear/>
    <publishedYear>2013</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>masterthesis</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Visibility-Driven Depth Determination of Surface Patches in Direct Volume Rendering</title>
    <advisor>Alexander Wiebel</advisor>
    <author>Sergej Stoppel</author>
    <submitter>Alexander Kuhn</submitter>
    <advisor>Konrad Polthier</advisor>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Volume Rendering</value>
    </subject>
    <collection role="institutes" number="vis">Visual Data Analysis</collection>
    <collection role="institutes" number="VDcC">Visual and Data-centric Computing</collection>
    <thesisGrantor>Freie Universität Berlin</thesisGrantor>
  </doc>
  <doc>
    <id>5026</id>
    <completedYear/>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>reportzib</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>2014-04-24</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Visibility-Driven Depth Determination of Surface Patches in Direct Volume Rendering</title>
    <abstract language="eng">This paper presents an algorithm called surfseek for selecting surfaces&#13;
on the most visible features in direct volume rendering (DVR). The&#13;
algorithm is based on a previously published technique (WYSIWYP) for&#13;
picking 3D locations in DVR. The new algorithm projects a surface patch&#13;
on the DVR image, consisting of multiple rays. For each ray the algorithm&#13;
uses WYSIWYP or a variant of it to find the candidates for the&#13;
most visible locations along the ray. Using these candidates the algorithm&#13;
constructs a graph and computes a minimum cut on this graph. The minimum&#13;
cut represents a very visible but relatively smooth surface. In the&#13;
last step the selected surface is displayed. We provide examples for the&#13;
results in real-world dataset as well as in artificially generated datasets.</abstract>
    <identifier type="issn">1438-0064</identifier>
    <identifier type="urn">urn:nbn:de:0297-zib-50266</identifier>
    <identifier type="doi">10.2312/eurovisshort.20141164</identifier>
    <enrichment key="SourceTitle">Appeared in: EuroVis - Short Papers,  2014, pp. 97-101</enrichment>
    <author>Sergej Stoppel</author>
    <submitter>Regine Kossick</submitter>
    <author>Hans-Christian Hege</author>
    <author>Alexander Wiebel</author>
    <series>
      <title>ZIB-Report</title>
      <number>14-11</number>
    </series>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Interaction Techniques</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Volume Rendering</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Picking</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Surfaces</value>
    </subject>
    <collection role="ccs" number="I.3.6">Methodology and Techniques</collection>
    <collection role="msc" number="68U05">Computer graphics; computational geometry [See also 65D18]</collection>
    <collection role="institutes" number="vis">Visual Data Analysis</collection>
    <collection role="institutes" number="visalgo">Visual Data Analysis in Science and Engineering</collection>
    <collection role="persons" number="hege">Hege, Hans-Christian</collection>
    <collection role="institutes" number="VDcC">Visual and Data-centric Computing</collection>
    <file>https://opus4.kobv.de/opus4-zib/files/5026/ZR-14-11.pdf</file>
  </doc>
</export-example>
