Volume sculpting based on geometric tools
Volume sculpting based on geometric tools
复制标题
基于几何工具的体积雕刻
DOI：
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复制
发表时间：
2009
影响因子：
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通讯作者：
C. Freitas
中科院分区：
文献类型：
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作者：
Rafael Huff;Roberto Silveira da Rosa;L. Nedel;C. Freitas
体积数据集的分析是从地球物理学到生物医学等许多领域的主要关注点。这些数据的直接可视化在这种情况下发挥着重要作用，尽管体积可视化技术取得了发展，但由于感知和性能问题，与大型数据集的交互仍然需要研究工作。需要交互式雕刻工具，它可以提供直观的方式来检查和探索数据集的内部部分，并为特定目的填充缺失的数据。在本文中，我们报告了交互式、直观且易于使用的雕刻工具的开发，这些工具指定体积内要从渲染中丢弃的区域，从而允许检查体积内部，并填充材料以在体积中构建虚拟结构。这些雕刻工具的交互率是通过在图形硬件上运行特殊的片段程序获得的。这些工具是使用两种交互隐喻（虚拟指针和虚拟手）来实现的，并在设备和单手交互与双手交互方面遵循不同的方法。我们详细报告了对这些方法的评估，并得出结论：同时使用两种不同的设备可以提供更好的性能，并且受到用户的青睐。此外，在测试过程中，使用虚拟手交互比使用虚拟指针提供了更好的结果。
The analysis of volumetric datasets is the main concern in many areas ranging from geophysics to biomedical sciences. The direct visualization of these data plays an important role in this scenario, and in spite of developments in volume visualization techniques, interacting with large datasets still demands research efforts due to perceptual and performance issues. There is a need of interactive sculpting tools which can provide an intuitive way to examine and explore inner parts of the datasets, as well as to fill missing data for specific purposes. In this paper we report the development of interactive, intuitive and easy-to-use sculpting tools, which specify regions within the volume to be discarded from rendering, thus allowing inspection of the volume interior, and to be filled with material to build virtual structures in the volume. Interactive rates for these sculpting tools were obtained by running special fragment programs on the graphics hardware. The tools were implemented using two interaction metaphors (virtual pointer and virtual hand) and following different approaches in terms of devices and single versus two-handed interaction. We report the evaluation of these approaches in detail and concluded that the use of two different devices together presents a better performance and are preferred by users. Moreover, the use of virtual hand interaction provided better results than using the virtual pointer during the tests.
DOI：
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发表时间：
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期刊：
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影响因子：
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作者：
Ken Museth;Torsten Möller;Anders Ynnerman;Francisco De;Moura Pinto;C. Freitas
通讯作者：
Ken Museth;Torsten Möller;Anders Ynnerman;Francisco De;Moura Pinto;C. Freitas