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VTK
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<h2 id="functionality">Functionality</h2> <p>VTK consists of a <a href="/facts/C%2B%2B/Et0F2qn9">C++</a> class library and several interpreted interface layers including <a href="/facts/Tcl/Tk/Y6NBxcbF">Tcl/Tk</a>, <a href="/facts/Java_(programming_language)/9ScgFyAL">Java</a>, and <a href="/facts/Python_(programming_language)/YbuGqofa">Python</a>. The toolkit is created and supported by the <a href="/facts/Kitware/f0VkXaDE">Kitware</a> team. VTK supports a various visualization algorithms including: <a href="/facts/Scalar_(computing)/VoCKtwml">scalar</a>, <a href="/facts/Euclidean_vector/bCLrdksy">vector</a>, <a href="/facts/Tensor/pNjFo5tV">tensor</a>, texture, and volumetric methods; and advanced modeling techniques such as: implicit modeling, polygon reduction, mesh smoothing, cutting, contouring, and <a href="/facts/Delaunay_triangulation/6VRk7cS9">Delaunay triangulation</a>. VTK has an <a href="/facts/Information_visualization/DSHteV85">information visualization</a> framework, has a suite of 3D interaction widgets, supports parallel processing, and integrates with various databases and GUI toolkits such as <a href="/facts/Qt_toolkit/gVhwlQnJ">Qt</a> and <a href="/facts/Tk_toolkit/Y6NBxcbF">Tk</a>. VTK is cross-platform and runs on Linux, Windows, Mac and Unix platforms. The core of VTK is implemented as a C++ toolkit, requiring users to build applications by combining various objects into an application. The system also supports automated wrapping of the C++ core into Python, Java and Tcl, so that VTK applications may also be written using these programming languages.<a class="footnote-ref" id="fnref:5" href="#fn:5"><sup>5</sup></a> </p> <h2 id="history">History</h2> <p>VTK was initially created in 1993 as companion software to the book <i>The Visualization Toolkit: An Object-Oriented Approach to 3D Graphics</i>.<a class="footnote-ref" id="fnref:6" href="#fn:6"><sup>6</sup></a> The book and software were written by three researchers (Will Schroeder, Ken Martin and Bill Lorensen) on their own time and with permission from General Electric (thus the ownership of the software resided with, and continues to reside with, the authors). After the core of VTK was written, users and developers around the world began to improve and apply the system to real-world problems.<a class="footnote-ref" id="fnref:7" href="#fn:7"><sup>7</sup></a> </p><p>With the founding of <a href="/facts/Kitware/f0VkXaDE">Kitware</a>, the VTK community grew rapidly, and toolkit usage expanded into academic, research and commercial applications. A number of major companies and organizations, such as <a href="/facts/Sandia_National_Laboratories/LYsKDj45">Sandia National Laboratories</a>, <a href="/facts/Livermore_National_Laboratory/WuXIbIKz">Livermore National Laboratory</a>, <a href="/facts/Los_Alamos_National_Laboratory/tlrLkV7r">Los Alamos National Laboratory</a> funded the development of VTK and even developed a number of VTK modules themselves.<a class="footnote-ref" id="fnref:8" href="#fn:8"><sup>8</sup></a> VTK forms the core of the <a href="/facts/3DSlicer/b9YfcRKg">3DSlicer</a> biomedical computing application, and numerous research papers at IEEE Visualization and other conferences based on VTK have appeared. VTK has been used on a large 1024-processor computer at the <a href="/facts/Los_Alamos_National_Laboratory/tlrLkV7r">Los Alamos National Laboratory</a> to process nearly a <a href="/facts/Petabyte/BNHUp9Qq">Petabyte</a> of data. </p><p>Later VTK was expanded to support the ingestion, processing and display of <a href="/facts/Informatics/YylNMP9r">informatics</a> data. This work was supported by <a href="/facts/Sandia_National_Laboratories/LYsKDj45">Sandia National Laboratories</a> under the 'Titan' project.<a class="footnote-ref" id="fnref:9" href="#fn:9"><sup>9</sup></a> </p> <h2 id="criticism">Criticism</h2> <p>In 2013, a survey paper on visualization for <a href="/facts/Radiotherapy/j60q5EC6">radiotherapy</a> noticed that while VTK is a powerful and widely known toolkit, it lacked a number of important features, such as multivolume rendering, had no support of proprietary <a href="/facts/CUDA/fvPpolot">CUDA</a> from <a href="/facts/NVidia/8QfCgqbu">NVidia</a>, no support of out-of-core rendering and no native support for visualization of time-dependent volumetric data.<a class="footnote-ref" id="fnref:10" href="#fn:10"><sup>10</sup></a> </p><p>However, since 2013 there have been improvements such as VTK-m which can speed-up and parallelize certain computationally intensive tasks<a class="footnote-ref" id="fnref:11" href="#fn:11"><sup>11</sup></a> using libraries like <a href="/facts/Sandia_National_Laboratories/LYsKDj45">Sandia</a>'s Kokkos.<a class="footnote-ref" id="fnref:12" href="#fn:12"><sup>12</sup></a> VTK is also used in the visualization pipeline of radiological imaging software such as MEDInria or Starviewer which perform multi-volume (also called fusion) and time-dependent (also called phase) visualizations.<a class="footnote-ref" id="fnref:13" href="#fn:13"><sup>13</sup></a><a class="footnote-ref" id="fnref:14" href="#fn:14"><sup>14</sup></a> </p> <h2 id="see-also">See also</h2> <ul> <li>Free and open-source software portal</li></ul> <ul><li><a href="/facts/Paraview/YCvNbd0l">Paraview</a></li> <li>Category:Software that uses VTK</li></ul> <h2 id="further-reading">Further reading</h2> <ul><li>Avila, Lisa Sobierajski (2010), <i>The VTK User's Guide</i> (11th ed.), Kitware, <a href="/facts/ISBN_(identifier)/15AdSPa9">ISBN</a> 978-1-930934-23-8</li></ul> <h2 id="external-links">External links</h2> <ul><li><a href="http://www.kitware.com/">Kitware home page</a></li> <li><a href="http://www.vtk.org/">Visualization toolkit (VTK)</a> and official <a href="http://www.vtk.org/Wiki/VTK">VTK Wiki</a></li> <li><a href="http://www.paraview.org/">Parallel Visualization Application (ParaView)</a> and official <a href="http://www.paraview.org/Wiki/ParaView">ParaView Wiki</a></li> <li><a href="http://www.vtk.org/img/dioot.pdf">PDF 9-page technical paper</a> (with color images)</li> <li><a href="https://web.archive.org/web/20100110122554/http://www.vtk.org/VTK/project/technical.html">A summary of VTK technical features</a></li> <li><a href="https://kitware.github.io/vtk-js/docs/">vtk.js, a Javascript implementation of VTK</a></li> <li><a href="http://marchingcubes.org/index.php/VTK">Some of the early history of VTK</a> <a href="https://web.archive.org/web/20200202170503/http://marchingcubes.org/index.php/VTK">Archived</a> 2020-02-02 at the <a href="/facts/Wayback_Machine/nmQ3a6JC">Wayback Machine</a></li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>Visualization Handbook, Academic Press, 2005, ISBN 012387582X, Chapter 30: the Visualization Toolkit <a href="/wiki/ISBN_(identifier)" target="_blank">/wiki/ISBN_(identifier)</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>"Various Licenses and Comments about Them". Gnu.org. <a href="https://www.gnu.org/licenses/license-list.en.html" target="_blank">https://www.gnu.org/licenses/license-list.en.html</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>"License:BSD-3-Clause". FSF.org. <a href="https://directory.fsf.org/wiki/License:BSD-3-Clause" target="_blank">https://directory.fsf.org/wiki/License:BSD-3-Clause</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>"Files · v8.1.1 · VTK / VTK". GitLab. <a href="https://gitlab.kitware.com/vtk/vtk/tree/v8.1.1" target="_blank">https://gitlab.kitware.com/vtk/vtk/tree/v8.1.1</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> <li id="fn:5"><p>Visualization Handbook, Academic Press, 2005, ISBN 012387582X, Chapter 30: the Visualization Toolkit <a href="/wiki/ISBN_(identifier)" target="_blank">/wiki/ISBN_(identifier)</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li> <li id="fn:6"><p>Schroeder, Will; Martin, Ken; Lorensen, Bill (2006), The Visualization Toolkit (4th ed.), Kitware, ISBN 978-1-930934-19-1 <a href="978-1-930934-19-1" target="_blank">978-1-930934-19-1</a> <a href="#fnref:6" class="footnote-back-ref">↩</a></p></li> <li id="fn:7"><p>Visualization Handbook, Academic Press, 2005, ISBN 012387582X, Chapter 30: the Visualization Toolkit <a href="/wiki/ISBN_(identifier)" target="_blank">/wiki/ISBN_(identifier)</a> <a href="#fnref:7" class="footnote-back-ref">↩</a></p></li> <li id="fn:8"><p>Visualization Handbook, Academic Press, 2005, ISBN 012387582X, Chapter 30: the Visualization Toolkit <a href="/wiki/ISBN_(identifier)" target="_blank">/wiki/ISBN_(identifier)</a> <a href="#fnref:8" class="footnote-back-ref">↩</a></p></li> <li id="fn:9"><p>"Sandia Titan webpage". Archived from the original on 2009-02-13. Retrieved 2008-11-11. <a href="https://web.archive.org/web/20090213165439/http://www.sandia.gov/Titan/" target="_blank">https://web.archive.org/web/20090213165439/http://www.sandia.gov/Titan/</a> <a href="#fnref:9" class="footnote-back-ref">↩</a></p></li> <li id="fn:10"><p>Miguel Nunes, Matthias Schlachter, Katja Buehler, "Visualization Tools for Radiotherapy - a Survey", in: Innovative imaging to improve radiotherapy treatments, materials of 2nd summer school by SUMMER Marie Curie Research Training Network, a EU &th Framework Programme, 2013, ISBN 1291604170 <a href="/wiki/ISBN_(identifier)" target="_blank">/wiki/ISBN_(identifier)</a> <a href="#fnref:10" class="footnote-back-ref">↩</a></p></li> <li id="fn:11"><p>"VTKM". VTKM. Retrieved 12 July 2020. <a href="http://m.vtk.org/index.php/Main_Page" target="_blank">http://m.vtk.org/index.php/Main_Page</a> <a href="#fnref:11" class="footnote-back-ref">↩</a></p></li> <li id="fn:12"><p>"Kokkos". Center for Computing Research (CCR). Retrieved 2024-09-09. <a href="https://www.sandia.gov/ccr/project/kokkos/" target="_blank">https://www.sandia.gov/ccr/project/kokkos/</a> <a href="#fnref:12" class="footnote-back-ref">↩</a></p></li> <li id="fn:13"><p>Ruiz, Marc; Julià, Adrià; Boada, Imma (May 2020). "Starviewer and its comparison with other free software DICOM viewers using a novel hierarchical evaluation framework". International Journal of Medical Informatics. 137: Supporting materials section. doi:10.1016/j.ijmedinf.2020.104098. hdl:10256/17874. PMID 32066084. S2CID 211158287. <a href="/wiki/Doi_(identifier)" target="_blank">/wiki/Doi_(identifier)</a> <a href="#fnref:13" class="footnote-back-ref">↩</a></p></li> <li id="fn:14"><p>"Github project: An advanced LibreOffice spreadsheet that hierarchically evaluates several features of DICOM viewers". Viewers compasion. Retrieved 12 July 2020. <a href="https://github.com/starviewer-medical/dicom-viewers-comparison" target="_blank">https://github.com/starviewer-medical/dicom-viewers-comparison</a> <a href="#fnref:14" class="footnote-back-ref">↩</a></p></li> </ol>