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Proceedings Visualization '94最新文献

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An annotation system for 3D fluid flow visualization 三维流体流动可视化标注系统
Proceedings Visualization '94 Pub Date : 1994-10-17 DOI: 10.1109/VISUAL.1994.346309
M. Loughlin, J. Hughes
{"title":"An annotation system for 3D fluid flow visualization","authors":"M. Loughlin, J. Hughes","doi":"10.1109/VISUAL.1994.346309","DOIUrl":"https://doi.org/10.1109/VISUAL.1994.346309","url":null,"abstract":"Annotation is a key activity of data analysis. However, current data analysis systems focus almost exclusively on visualization. We propose a system which integrates annotations into a visualization system. Annotations are embedded in 3D data space, using the Post-it metaphor. This embedding allows contextual-based information storage and retrieval, and facilitates information sharing in collaborative environments. We provide a traditional database filter and a Magic Lens filter to create specialized views of the data. The system is customized for fluid flow applications, with features which allow users to store parameters of visualization tools and sketch 3D volumes.<<ETX>>","PeriodicalId":273215,"journal":{"name":"Proceedings Visualization '94","volume":"10 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126098459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 25
Parallel performance measures for volume ray casting 体射线投射的平行性能测量
Proceedings Visualization '94 Pub Date : 1994-10-17 DOI: 10.1109/VISUAL.1994.346319
Cláudio T. Silva, A. Kaufman
{"title":"Parallel performance measures for volume ray casting","authors":"Cláudio T. Silva, A. Kaufman","doi":"10.1109/VISUAL.1994.346319","DOIUrl":"https://doi.org/10.1109/VISUAL.1994.346319","url":null,"abstract":"Describes a technique for achieving fast volume ray-casting on parallel machines, using a load-balancing scheme and an efficient pipelined approach to compositing. We propose a new model for measuring the amount of work one needs to perform in order to render a given volume, and we use this model to obtain a better load-balancing scheme for distributed memory machines. We also discuss in detail the design trade-offs of our technique. In order to validate our model, we have implemented it on the Intel iPSC/860 and the Intel Paragon, and conducted a detailed performance analysis.<<ETX>>","PeriodicalId":273215,"journal":{"name":"Proceedings Visualization '94","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114485836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 31
Volume rendering methods for computational fluid dynamics visualization 计算流体动力学可视化的体绘制方法
Proceedings Visualization '94 Pub Date : 1994-10-17 DOI: 10.1109/VISUAL.1994.346314
D. Ebert, R. Yagel, James N. Scott, Y. Kurzion
{"title":"Volume rendering methods for computational fluid dynamics visualization","authors":"D. Ebert, R. Yagel, James N. Scott, Y. Kurzion","doi":"10.1109/VISUAL.1994.346314","DOIUrl":"https://doi.org/10.1109/VISUAL.1994.346314","url":null,"abstract":"The paper describes three alternative volume rendering approaches to visualizing computational fluid dynamics (CFD) data. One new approach uses realistic volumetric gas rendering techniques to produce photo-realistic images and animations from scalar CFD data. The second uses ray casting that is based an a sampler illumination model and is mainly centered around a versatile new tool for the design of transfer functions. The third method employs a simple illumination model and rapid rendering mechanisms to provide efficient preview capabilities. These tools provide a large range of volume rendering capabilities to be used by the CFD explorer to render rapidly for navigation through the data, to emphasize data features (e.g., shock waves) with a specific transfer function, or to present a realistic rendition of the model.<<ETX>>","PeriodicalId":273215,"journal":{"name":"Proceedings Visualization '94","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122223914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 27
Fast surface rendering from raster data by voxel traversal using chessboard distance 快速表面渲染从栅格数据通过体素遍历使用棋盘距离
Proceedings Visualization '94 Pub Date : 1994-10-17 DOI: 10.1109/VISUAL.1994.346320
M. Srámek
{"title":"Fast surface rendering from raster data by voxel traversal using chessboard distance","authors":"M. Srámek","doi":"10.1109/VISUAL.1994.346320","DOIUrl":"https://doi.org/10.1109/VISUAL.1994.346320","url":null,"abstract":"The increasing distinguishing capability of tomographic and other 3D scanners as well as the new voxelization algorithms place new demands on visualization techniques aimed at interactivity and rendition quality. Among others, triangulation on a subvoxel level based on the marching cube algorithm has gained popularity in recent years. However without graphics hardware support, rendering many small triangles could be awkward. We present a surface rendering approach based on ray tracing of segmented volumetric data. We show that if a proper interpolation scheme and voxel traversal algorithm are used, high quality images can be obtained within an acceptable time and without hardware support.<<ETX>>","PeriodicalId":273215,"journal":{"name":"Proceedings Visualization '94","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129789935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 48
The topology of symmetric, second-order tensor fields 对称二阶张量场的拓扑结构
Proceedings Visualization '94 Pub Date : 1994-10-17 DOI: 10.1109/VISUAL.1994.346326
L. Hesselink, Y. Levy, Yingmei Lavin
{"title":"The topology of symmetric, second-order tensor fields","authors":"L. Hesselink, Y. Levy, Yingmei Lavin","doi":"10.1109/VISUAL.1994.346326","DOIUrl":"https://doi.org/10.1109/VISUAL.1994.346326","url":null,"abstract":"We study the topology of symmetric, second-order tensor fields. The goal is to represent their complex structure by a simple set of carefully chosen points and lines analogous to vector field topology. We extract topological skeletons of the eigenvector fields, and we track their evolution over time. We study tensor topological transitions and correlate tensor and vector data. The basic constituents of tensor topology are the degenerate points, or points where eigenvalues are equal to each other. Degenerate points play a similar role as critical points in vector fields. We identify two kinds of elementary degenerate points, which we call wedges and trisectors. They can combine to form more familiar singularities-such as saddles, nodes, centers, or foci. However, these are generally unstable structures in tensor fields. Finally, we show a topological rule that puts a constraint on the topology of tensor fields defined across surfaces, extending to tensor fields the Poincare-Hopf theorem for vector fields.<<ETX>>","PeriodicalId":273215,"journal":{"name":"Proceedings Visualization '94","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123579915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 234
Mix&Match: a construction kit for visualization Mix&Match:可视化的构建工具
Proceedings Visualization '94 Pub Date : 1994-10-17 DOI: 10.1109/VISUAL.1994.346305
A. Pang, Naim Alper
{"title":"Mix&Match: a construction kit for visualization","authors":"A. Pang, Naim Alper","doi":"10.1109/VISUAL.1994.346305","DOIUrl":"https://doi.org/10.1109/VISUAL.1994.346305","url":null,"abstract":"We present an environment in which users can interactively create different visualization methods. This modular and extensible environment encapsulates most of the existing visualization algorithms. Users can easily construct new visualization methods by combining simple, fine grain building blocks. These components operate on a local subset of the data and generally either look for target features or produce visual objects. Intermediate compositions may also be used to build more complex visualizations. This environment provides a foundation for building and exploring novel visualization methods.<<ETX>>","PeriodicalId":273215,"journal":{"name":"Proceedings Visualization '94","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128310504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 19
Piecewise-linear surface approximation from noisy scattered samples 噪声散射样本的分段线性表面逼近
Proceedings Visualization '94 Pub Date : 1994-10-17 DOI: 10.1109/VISUAL.1994.346336
M. Margaliot, C. Gotsman
{"title":"Piecewise-linear surface approximation from noisy scattered samples","authors":"M. Margaliot, C. Gotsman","doi":"10.1109/VISUAL.1994.346336","DOIUrl":"https://doi.org/10.1109/VISUAL.1994.346336","url":null,"abstract":"We consider the problem of approximating a smooth surface f(x, y), based on n scattered samples {(x/sub i/, y/sub i/, z/sub i/)/sub i=1//sup n/} where the sample values {z/sub i/} are contaminated with noise: z/sub i/=f(x/sub i/, y/sub i/)=/spl epsiv//sub i/. We present an algorithm that generates a PLS (piecewise linear surface) f', defined on a triangulation of the sample locations V={(x/sub i/, y/sub i/)/sub i=1//sup n/}, approximating f well. Constructing the PLS involves specifying both the triangulation of V and the values of f' at the points of V. We demonstrate that even when the sampling process is not noisy, a better approximation for f is obtained using our algorithm, compared to existing methods. This algorithm is useful for DTM (digital terrain map) manipulation by polygon-based graphics engines for visualization applications.<<ETX>>","PeriodicalId":273215,"journal":{"name":"Proceedings Visualization '94","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125519954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
Visualization and geographic information system integration: what are the needs and the requirements, if any? 可视化与地理信息系统集成:有什么需求和要求吗?
Proceedings Visualization '94 Pub Date : 1994-10-17 DOI: 10.1109/VISUAL.1994.346284
T. Rhyne, W. Ivey, L. Knapp, Peter Kochevar, T. Mace
{"title":"Visualization and geographic information system integration: what are the needs and the requirements, if any?","authors":"T. Rhyne, W. Ivey, L. Knapp, Peter Kochevar, T. Mace","doi":"10.1109/VISUAL.1994.346284","DOIUrl":"https://doi.org/10.1109/VISUAL.1994.346284","url":null,"abstract":"Addresses the needs and requirements of integrating visualization and geographic information system technologies. There are three levels of integration methods: rudimentary, operational and functional. The rudimentary approach uses the minimum amount of data sharing and exchange between these two technologies. The operational level attempts to provide consistency of the data while removing redundancies between the two technologies. The functional form attempts to provide transparent communication between these respective software environments. At this level, the user only needs to request information and the integrated system retrieves or generates the information depending upon the request. This paper examines the role and impact of these three levels of integration. Stepping further into the future, the paper also questions the long-term survival of these separate disciplines.<<ETX>>","PeriodicalId":273215,"journal":{"name":"Proceedings Visualization '94","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123286922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
Visualizing data: is virtual reality the key? 可视化数据:虚拟现实是关键吗?
Proceedings Visualization '94 Pub Date : 1994-10-17 DOI: 10.1109/VISUAL.1994.346286
L. M. Stone, T. Erickson, B. Bederson, P. Rothman, R. Muzzy
{"title":"Visualizing data: is virtual reality the key?","authors":"L. M. Stone, T. Erickson, B. Bederson, P. Rothman, R. Muzzy","doi":"10.1109/VISUAL.1994.346286","DOIUrl":"https://doi.org/10.1109/VISUAL.1994.346286","url":null,"abstract":"A visualization goal is to simplify the analysis of large-quantity, numerical data by rendering the data as an image that can be intuitively manipulated. The question the article addresses is whether or not virtual reality techniques are the cure-all to the dilemma of visualizing increasing amounts of data. It determines the usefulness of techniques available today and in the near future that will ease the problem of visualizing complex data. In regards to visualization, the article discusses characteristics of virtual reality systems, data in three-dimensional environments, augmented reality, and virtual reality market opportunities.<<ETX>>","PeriodicalId":273215,"journal":{"name":"Proceedings Visualization '94","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123761905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
VolVis: a diversified volume visualization system VolVis:一个多样化的体可视化系统
Proceedings Visualization '94 Pub Date : 1994-10-17 DOI: 10.1109/VISUAL.1994.346340
Ricardo S. Avila, Taosong He, Lichan Hong, A. Kaufman, H. Pfister, Cláudio T. Silva, L. Sobierajski, Sidney W. Wang
{"title":"VolVis: a diversified volume visualization system","authors":"Ricardo S. Avila, Taosong He, Lichan Hong, A. Kaufman, H. Pfister, Cláudio T. Silva, L. Sobierajski, Sidney W. Wang","doi":"10.1109/VISUAL.1994.346340","DOIUrl":"https://doi.org/10.1109/VISUAL.1994.346340","url":null,"abstract":"VolVis is a diversified, easy to use, extensible, high performance, and portable volume visualization system for scientists and engineers as well as for visualization developers and researchers. VolVis accepts as input 3D scalar volumetric data as well as 3D volume-sampled and classical geometric models. Interaction with the data is controlled by a variety of 3D input devices in an input device-independent environment. VolVis output includes navigation preview, static images, and animation sequences. A variety of volume rendering algorithms are supported ranging from fast rough approximations, to compression-domain rendering, to accurate volumetric ray tracing and radiosity, and irregular grid rendering.<<ETX>>","PeriodicalId":273215,"journal":{"name":"Proceedings Visualization '94","volume":"388 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122843667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 101
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