Visualization : proceedings of the ... IEEE Conference on Visualization. IEEE Conference on Visualization最新文献

英文中文

Conformal Magnifier: A Focus+Context Technique with Minimal Distortion. 保形放大镜:一个焦点+背景技术与最小的失真。

Visualization : proceedings of the ... IEEE Conference on Visualization. IEEE Conference on Visualization

Pub Date : 2012-11-01

Xin Zhao, Wei Zeng, Xianfeng Gu, Arie Kaufman, Wei Xu, Klaus Mueller

We present the conformal magnifier, a novel interactive Focus+Context visualization technique to magnify a region of interest (ROI) using conformal mapping. Our framework allows the user to design an arbitrary magnifier to enlarge the features of interest while deforming part of the remaining areas without any cropping. By using conformal mapping, the ROI is magnified with minimal distortion, while the transition region is a smooth and continuous deformation between the focus and context regions. An interactive interface is designed for the user to select important features, design focus models of arbitrary shape and set deformation constraints to satisfy his/her specified requirements. We demonstrate the effectiveness, robustness and efficiency of our method using several applications: texts, maps, geographic images, data structures and multi-media visualization.

我们提出了保形放大镜，一种新的交互式焦点+上下文可视化技术，利用保形映射放大感兴趣区域。我们的框架允许用户设计任意放大镜来放大感兴趣的特征，同时在不进行任何裁剪的情况下变形部分剩余区域。通过保角映射，ROI以最小的失真被放大，而过渡区域是焦点和上下文区域之间的平滑连续变形。设计了一个交互界面，用户可以选择重要特征，设计任意形状的焦点模型，并设置变形约束，以满足用户的指定要求。我们通过文本、地图、地理图像、数据结构和多媒体可视化等应用证明了我们方法的有效性、鲁棒性和效率。

引用次数: 0

Modified Dendrogram of High-dimensional Feature Space for Transfer Function Design. 用于传递函数设计的高维特征空间改进树状图。

Visualization : proceedings of the ... IEEE Conference on Visualization. IEEE Conference on Visualization

Pub Date : 2012-01-01

Lei Wang, Xin Zhao, Arie Kaufman

We introduce a modified dendrogram (MD) (with sub-trees to represent the feature space clusters) and display it in continuous space for multi-dimensional transfer function (TF) design and modification. Such a TF for direct volume rendering often employs a multi-dimensional feature space. In an n-dimensional (nD) feature space, each voxel is described using n attributes and represented by a vector of n values. The MD reveals the hierarchical structure information of the high-dimensional feature space clusters. Using the MD user interface (UI), the user can design and modify the TF in 2D in an intuitive and informative manner instead of designing it directly in multi-dimensional space where it is complicated and harder to understand the relationship of the feature space vectors. In addition, we provide the capability to interactively change the granularity of the MD. The coarse-grained MD shows primarily the global information of the feature space while the fine-grained MD reveals the finer details, and the separation ability of the high-dimensional feature space is completely preserved in the finest granularity. With the so called multi-grained method, the user can efficiently create a TF using the coarse-grained MD, then fine tune it with the finer-grained MDs to improve the quality of the volume rendering. Furthermore, we propose a fast interactive hierarchical clustering (FIHC) algorithm for accelerating the MD computation and supporting the interactive multi-grained TF design. In the FIHC, the finest-grained MD is established by linking the feature space vectors, then the feature space vectors being the leaves of this tree are clustered using a hierarchical leaf clustering (HLC) algorithm forming a leaf vector hierarchical tree (LVHT). The granularity of the MD can be changed by setting the precision of the LVHT. Our method is independent on the type of the attributes and supports arbitrary-dimension feature space.

我们引入了一种改进的树状图(MD)(用子树表示特征空间簇)，并将其显示在连续空间中，用于多维传递函数(TF)的设计和修改。这种用于直接体绘制的TF通常使用多维特征空间。在n维(nD)特征空间中，每个体素使用n个属性来描述，并由n个值的向量表示。MD揭示了高维特征空间聚类的层次结构信息。使用MD用户界面(UI)，用户可以以直观和信息的方式在二维空间中设计和修改TF，而不是直接在多维空间中设计TF，因为多维空间中特征空间向量的关系复杂且难以理解。此外，我们还提供了交互改变MD粒度的能力。粗粒度MD主要显示特征空间的全局信息，而细粒度MD则显示更细的细节，并且在最细粒度中完全保留了高维特征空间的分离能力。使用所谓的多粒度方法，用户可以使用粗粒度MD有效地创建TF，然后使用细粒度MD对其进行微调，以提高体呈现的质量。此外，我们还提出了一种快速交互式分层聚类(FIHC)算法，以加速MD计算并支持交互式多粒度TF设计。在FIHC中，通过连接特征空间向量来建立最细粒度的MD，然后使用分层叶聚类(HLC)算法对作为该树叶子的特征空间向量进行聚类，形成叶向量分层树(LVHT)。可以通过设置LVHT的精度来改变MD的粒度。该方法与属性类型无关，支持任意维特征空间。

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引用次数: 0

The Visualization Process: The Path from Data to Insight 可视化过程:从数据到洞察力的路径

Visualization : proceedings of the ... IEEE Conference on Visualization. IEEE Conference on Visualization

Pub Date : 2005-11-21 DOI: 10.1109/VIS.2005.104

K. Gaither, D. Ebert, D. Weiskopf, P. Hanrahan

While previous Visualization panels have focused on different methods for scientific visualization, this panel focuses on the process of transforming data into insight. The overarching goal for visualization is to transform data into information or knowledge. This goal, however, can be somewhat elusive and difficult to achieve. The purpose of this panel is to discuss a variety of approaches that range from traditional to those that are new and emerging. Each of the given panelists is keenly interested in extracting relevant knowledge and information from a given set of data. However, each panelist takes a very different approach, and each has a different process by which visualization bears insight. David Ebert is inspired by the effectiveness of illustration and experimental photography techniques to convey knowledge. Kelly Gaither is keenly rooted in the physical meaning behind the data and uses this knowledge to guide the choice and style of visual representation. Pat Hanrahan is interested in self-illustrating phenomena and new approaches to visualizing streams of data such as network flows, migrations of birds and people, and flow of goods and traffic. Daniel Weiskopf is exploring the impact of color, motion, and interactivity on the visualization process. His approaches are traditional in nature but incorporate advances in graphics hardware.

之前的可视化专题讨论侧重于科学可视化的不同方法，而本次专题讨论侧重于将数据转化为洞察力的过程。可视化的首要目标是将数据转换为信息或知识。然而，这个目标可能有些难以捉摸和难以实现。这个小组的目的是讨论从传统到新兴的各种方法。每个给定的小组成员都对从给定的一组数据中提取相关知识和信息非常感兴趣。然而，每个小组成员都采用非常不同的方法，并且每个人都有不同的可视化过程。David Ebert受到插图和实验性摄影技术传达知识的有效性的启发。Kelly Gaither敏锐地植根于数据背后的物理意义，并利用这些知识来指导视觉表现的选择和风格。Pat Hanrahan对自我说明现象和可视化数据流的新方法感兴趣，例如网络流，鸟类和人类的迁徙，以及货物和交通的流动。Daniel Weiskopf正在探索色彩、运动和交互性对可视化过程的影响。他的方法本质上是传统的，但结合了图形硬件的进步。

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引用次数: 2

Design and Evaluation in Visualization Research 可视化研究中的设计与评价

Visualization : proceedings of the ... IEEE Conference on Visualization. IEEE Conference on Visualization

Pub Date : 2005-11-21 DOI: 10.1109/VIS.2005.21

D. House, V. Interrante, D. Laidlaw, Russell M. Taylor, C. Ware

This panel brings together researchers who have been pioneering quite different approaches to visualization research by integrating evaluation and knowledge of visual design into their work. The panelists will present their views and experiences in using user studies for quantitative evaluation of methods, in integrating the expertise of visually trained designers into the development of methods, and in exploring the parameter space of visualization possibilities using "human-in-the-loop" experiments. A goal of the panel is to encourage a lively and stimulating discussion by presenting challenging but highly contrasting ideas. The panel will follow the usual pattern of short position presentations, taking care to leave ample time for audience interaction, questions, and comments.

这个小组汇集了一些研究人员，他们通过将视觉设计的评估和知识整合到他们的工作中，开创了截然不同的可视化研究方法。小组成员将介绍他们在以下方面的观点和经验:使用用户研究对方法进行定量评价;将受过视觉训练的设计师的专门知识纳入方法的发展;以及利用“人在循环”实验探索可视化可能性的参数空间。小组讨论的目标是通过提出具有挑战性但又高度对比的观点来鼓励一场生动而刺激的讨论。小组将遵循通常的简短陈述模式，注意留出足够的时间让观众互动、提问和评论。

引用次数: 19

Illustrative Rendering Techniques for Visualization: Future of Visualization or Just Another Technique? 可视化的说明性渲染技术:可视化的未来还是另一种技术?

Visualization : proceedings of the ... IEEE Conference on Visualization. IEEE Conference on Visualization

Pub Date : 2005-11-21 DOI: 10.1109/VIS.2005.56

D. Bartz, H. Hagen, V. Interrante, K. Ma, B. Preim

Illustrative rendering, often also depicted as non-photorealistic rendering1 or stylized rendering, employs abstraction techniques to convey the relevant information, and de-emphasize less important details. The question remains how this abstraction process is guided and in particular how can we ensure that relevant information is maintained. Consequently, research on illustrative rendering needs to address how the information is perceived by the human observer, next to the investigation of algorithmic aspects. In this panel, we discuss various aspects on this topic. Kwan-Liu Ma discusses how illustrative rendering can be used in scientifc visualization, and Bernhard Preim explores its use for the visualization in the medical imaging domain. Perception aspects are presented by Victoria Interrante. A different perspective, if illustrative rendering is useful for typical visualization problems, is added by Hans Hagen.

说明性渲染，通常也被描述为非真实感渲染或风格化渲染，使用抽象技术来传达相关信息，而不强调不重要的细节。问题仍然是如何指导这个抽象过程，特别是我们如何确保相关信息得到维护。因此，对说明性渲染的研究需要解决人类观察者如何感知信息的问题，其次是算法方面的研究。在这个小组中，我们将讨论这个主题的各个方面。Kwan-Liu Ma讨论了如何在科学可视化中使用说明性渲染，Bernhard Preim探讨了它在医学成像领域的可视化应用。感知方面由Victoria Interrante提出。如果说明性渲染对典型的可视化问题有用，汉斯·哈根添加了一个不同的视角。

引用次数: 2

Neuroanatomical image alignment 神经解剖图像对齐

Visualization : proceedings of the ... IEEE Conference on Visualization. IEEE Conference on Visualization

Pub Date : 2005-10-23 DOI: 10.1109/VIS.2005.69

Issac J. Trotts, B. Olshausen, E. Jones

引用次数: 0

Visual Medicine: Part One - Medical Imaging 视觉医学:第一部分-医学成像

Visualization : proceedings of the ... IEEE Conference on Visualization. IEEE Conference on Visualization

Pub Date : 2005-10-23 DOI: 10.1109/VIS.2005.116

D. Bartz, G. Kindlmann, K. Mueller, B. Preim, M. Wacker

引用次数: 0

Visualization in the Earth Sciences: A Discussion on Various Visualization Methods using amira 地球科学中的可视化:利用amira的各种可视化方法的讨论

Visualization : proceedings of the ... IEEE Conference on Visualization. IEEE Conference on Visualization

Pub Date : 2005-10-23 DOI: 10.1109/VIS.2005.119

S. Wang, M. Damon, D. Yuen

It is widely acknowledged that an important aspect in Earth Science research is the ability to visualize huge amounts of data resulting from numerical simulations or data acquisition. Whether the data is a simple two-dimensional plot or a three-dimensional multivariate grid, the ability to visualize the data is imperative for researchers to properly demonstrate results. This poster will examine various visualization techniques of the software package, amira® (www.amiravis.com) with respect to three research projects. These projects are: a mantle convection simulation run on the Earth Simulator; a spherical harmonic model computed at the University of Minnesota's Supercomputing Institute; an upper mantle study of earthquake-generated shear waves down to 660 km obtained through computed tomography using seismogram data from the Incorporated Research Institutions for Seismology (IRIS). The data resulting from the mantle convection study is in the form of a regular cartesian grid consisting of various field parameters such as temperature, velocity and viscosity. Techniques employed to view these fields include but are not limited to volume rendering, illuminated streamlines and oblique slices. The spherical harmonics model is rendered as a volume and is also explored using an isosurface module. The upper mantle study is visualized using an oblique slice technique and also isosurfaces. An analysis of the benefits and drawbacks of various amira® modules in regard to the above projects will not only result in a better understanding of the data, but will also demonstrate the unique capabilities of the different techniques and how they can be best applied to specific problems in the Earth Sciences.

人们普遍认为，地球科学研究的一个重要方面是能够将由数值模拟或数据采集产生的大量数据可视化。无论数据是简单的二维图还是三维多元网格，可视化数据的能力对于研究人员正确展示结果是必不可少的。这张海报将检查软件包的各种可视化技术，amira®(www.amiravis.com)与三个研究项目有关。这些项目是:在地球模拟器上运行的地幔对流模拟;明尼苏达大学超级计算研究所计算的球谐模型;利用地震学联合研究机构(IRIS)的地震记录数据，通过计算机断层扫描，对660公里以下地震产生的横波进行了上地幔研究。地幔对流研究得到的数据是由温度、速度和粘度等各种场参数组成的规则笛卡尔网格。用于查看这些领域的技术包括但不限于体积渲染、照明流线和斜切片。球面谐波模型被渲染为一个体，并且还使用一个等面模块进行了探索。上地幔研究使用斜切片技术和等值面进行可视化。对上述项目中各种amira®模块的优缺点进行分析，不仅可以更好地理解数据，还可以展示不同技术的独特功能，以及如何将它们最好地应用于地球科学中的具体问题。

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引用次数: 3

Visual Medicine: Part Two - Advanced Applications of Medical Imaging 视觉医学:第二部分-医学成像的高级应用

Visualization : proceedings of the ... IEEE Conference on Visualization. IEEE Conference on Visualization

Pub Date : 2005-10-23 DOI: 10.1109/VIS.2005.117

D. Bartz, G. Kindlmann, K. Mueller, B. Preim, M. Wacker

引用次数: 5

Volume Rendering of Real-Time 3D Echocardiographic Data 实时三维超声心动图数据的体绘制

Visualization : proceedings of the ... IEEE Conference on Visualization. IEEE Conference on Visualization

Pub Date : 2005-10-23 DOI: 10.1109/VIS.2005.132

Vladimir Zagrodsky, R. Shekhar

引用次数: 1

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