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Proceedings Visualization '94最新文献

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GASP-a system for visualizing geometric algorithms 一个可视化几何算法的系统
Proceedings Visualization '94 Pub Date : 1994-10-17 DOI: 10.1109/VISUAL.1994.346325
A. Tal, D. Dobkin
{"title":"GASP-a system for visualizing geometric algorithms","authors":"A. Tal, D. Dobkin","doi":"10.1109/VISUAL.1994.346325","DOIUrl":"https://doi.org/10.1109/VISUAL.1994.346325","url":null,"abstract":"This paper describes a system, GASP, that facilitates the visualization of geometric algorithms. The user need not have any knowledge of computer graphics in order to quickly generate a visualization. The system is also intended to facilitate the task of implementing and debugging geometric algorithms. The viewer is provided with a comfortable user interface enhancing the exploration of an algorithm's functionality. We describe the underlying concepts of the system as well as a variety of examples which illustrate its use.<<ETX>>","PeriodicalId":273215,"journal":{"name":"Proceedings Visualization '94","volume":"57 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":"129313869","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: 7
Integrated control of distributed volume visualization through the World-Wide-Web 通过万维网实现分布式卷可视化的集成控制
Proceedings Visualization '94 Pub Date : 1994-10-17 DOI: 10.1109/VISUAL.1994.346342
Cheong S. Ang, David C. Martin, M. Doyle
{"title":"Integrated control of distributed volume visualization through the World-Wide-Web","authors":"Cheong S. Ang, David C. Martin, M. Doyle","doi":"10.1109/VISUAL.1994.346342","DOIUrl":"https://doi.org/10.1109/VISUAL.1994.346342","url":null,"abstract":"The World-Wide-Web (WWW) has created a new paradigm for online information retrieval by providing immediate and ubiquitous access to digital information of any type from data repositories located throughout the world. The web's development enables not only effective access for the generic user but also more efficient and timely information exchange among scientists and researchers. We have extended the capabilities of the web to include access to three-dimensional volume data sets with integrated control of a distributed client-server volume visualization system. This paper provides a brief background on the World-Wide-Web, an overview of the extensions necessary to support these new data types and a description of an implementation of this approach in a WWW-compliant distributed visualization system.<<ETX>>","PeriodicalId":273215,"journal":{"name":"Proceedings Visualization '94","volume":"24 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":"129230195","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: 39
UFAT-a particle tracer for time-dependent flow fields ufat -时间相关流场的粒子示踪剂
Proceedings Visualization '94 Pub Date : 1994-10-17 DOI: 10.1109/VISUAL.1994.346311
David A. Lane
{"title":"UFAT-a particle tracer for time-dependent flow fields","authors":"David A. Lane","doi":"10.1109/VISUAL.1994.346311","DOIUrl":"https://doi.org/10.1109/VISUAL.1994.346311","url":null,"abstract":"Time-dependent (unsteady) flow fields are commonly generated in computational fluid dynamics (CFD) simulations; however, there are very few flow visualization systems that generate particle traces in unsteady flow fields. Most existing systems generate particle traces in time-independent flow fields. A particle tracing system has been developed to generate particle traces in unsteady flow fields. The system was used to visualize several 3D unsteady flow fields from real-world problems, and it has provided useful insights into the time-varying phenomena in the flow fields. The design requirements and the architecture of the system are described. Some examples of particle traces computed by the system are also shown.<<ETX>>","PeriodicalId":273215,"journal":{"name":"Proceedings Visualization '94","volume":"17 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":"129291436","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: 106
A lattice model for data display 数据显示的格子模型
Proceedings Visualization '94 Pub Date : 1994-10-17 DOI: 10.1109/VISUAL.1994.346304
W. Hibbard, C. Dyer, Brian E. Paul
{"title":"A lattice model for data display","authors":"W. Hibbard, C. Dyer, Brian E. Paul","doi":"10.1109/VISUAL.1994.346304","DOIUrl":"https://doi.org/10.1109/VISUAL.1994.346304","url":null,"abstract":"In order to develop a foundation for visualization, we develop lattice models for data objects and displays that focus on the fact that data objects are approximations to mathematical objects and real displays are approximations to ideal displays. These lattice models give us a way to quantize the information content of data and displays and to define conditions on the visualization mappings from data to displays. Mappings satisfy these conditions if and only if they are lattice isomorphisms. We show how to apply this result to scientific data and display models, and discuss how it might be applied to recursively defined data types appropriate for complex information processing.<<ETX>>","PeriodicalId":273215,"journal":{"name":"Proceedings Visualization '94","volume":"31 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":"132414362","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: 42
Visualization of 3D ultrasonic data 三维超声数据可视化
Proceedings Visualization '94 Pub Date : 1994-10-17 DOI: 10.1109/VISUAL.1994.346294
G. Sakas, L. Schreyer, M. Grimm
{"title":"Visualization of 3D ultrasonic data","authors":"G. Sakas, L. Schreyer, M. Grimm","doi":"10.1109/VISUAL.1994.346294","DOIUrl":"https://doi.org/10.1109/VISUAL.1994.346294","url":null,"abstract":"3D ultrasound is one of the most interesting non-invasive, non-radiative tomographic techniques. Rendering 3D models from such data is not straightforward due to the noisy, fuzzy nature of ultrasound imaging containing a lot of artefacts. We first apply speckle, median and gaussian prefiltering to improve the image quality. Using several semi-automatic segmentation tools we isolate interesting features within a few minutes. Our improved surface-extraction procedure enables volume rendering of high quality within a few seconds on a normal workstation, thus making the complete system suitable for routine clinical applications.<<ETX>>","PeriodicalId":273215,"journal":{"name":"Proceedings Visualization '94","volume":"16 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":"125241641","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: 8
Severe rainfall events in Northwestern Peru (visualization of scattered meteorological data) 秘鲁西北部强降雨事件(零散气象数据可视化)
Proceedings Visualization '94 Pub Date : 1994-10-17 DOI: 10.1109/VISUAL.1994.346298
L. Treinish
{"title":"Severe rainfall events in Northwestern Peru (visualization of scattered meteorological data)","authors":"L. Treinish","doi":"10.1109/VISUAL.1994.346298","DOIUrl":"https://doi.org/10.1109/VISUAL.1994.346298","url":null,"abstract":"The ordinarily arid climate of coastal Peru is disturbed every few years by a phenomenon called El Nino, characterized by a warming in the Pacific Ocean. Severe rainstorms are one of the consequences of El Nino, which cause great damage. An examination of daily data from 66 rainfall stations in the Chiura-Piura region of northwestern Peru from late 1982 through mid-1983 (associated with an El Nino episode) yields information on the mesoscale structure of these storms. These observational data are typical of a class that are scattered at irregular locations in two dimensions. The use of continuous realization techniques for qualitative visualization (e.g., surface deformation or contouring) requires an intermediate step to define a topological relationship between the locations of data to form a mesh structure. Several common methods are considered, and the results of their application to the study of the rainfall events are analyzed.<<ETX>>","PeriodicalId":273215,"journal":{"name":"Proceedings Visualization '94","volume":"98 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":"115738708","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
A library for visualizing combinatorial structures 一个用于可视化组合结构的库
Proceedings Visualization '94 Pub Date : 1994-10-17 DOI: 10.1109/VISUAL.1994.346323
Marc Najork, Marc H. Brown
{"title":"A library for visualizing combinatorial structures","authors":"Marc Najork, Marc H. Brown","doi":"10.1109/VISUAL.1994.346323","DOIUrl":"https://doi.org/10.1109/VISUAL.1994.346323","url":null,"abstract":"Describes ANIM3D, a 3D animation library targeted at visualizing combinatorial structures. In particular, we are interested in algorithm animation. Constructing a new view for an algorithm typically takes dozens of design iterations, and can be very time-consuming. Our library eases the programmer's burden by providing high-level constructs for performing animations, and by offering an interpretive environment that eliminates the need for recompilations. We also illustrate ANIM3D's expressiveness by developing a 3D animation of Dijkstra's shortest-path algorithm in just 70 lines of code.<<ETX>>","PeriodicalId":273215,"journal":{"name":"Proceedings Visualization '94","volume":"71 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":"125281504","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: 16
Visualizing 3D velocity fields near contour surfaces 可视化三维速度场附近的轮廓曲面
Proceedings Visualization '94 Pub Date : 1994-08-01 DOI: 10.1109/VISUAL.1994.346312
N. Max, R. Crawfis, C. Grant
{"title":"Visualizing 3D velocity fields near contour surfaces","authors":"N. Max, R. Crawfis, C. Grant","doi":"10.1109/VISUAL.1994.346312","DOIUrl":"https://doi.org/10.1109/VISUAL.1994.346312","url":null,"abstract":"Vector field rendering is difficult in 3D because the vector icons overlap and hide each other. We propose four different techniques for visualizing vector fields only near surfaces. The first uses motion blurred particles in a thickened region around the surface. The second uses a voxel grid to contain integral curves of the vector field. The third uses many antialiased lines through the surface, and the fourth uses hairs sprouting from the surface and then bending in the direction of the vector field. All the methods use the graphics pipeline, allowing real time rotation and interaction, and the first two methods can animate the texture to move in the flow determined by the velocity field.<<ETX>>","PeriodicalId":273215,"journal":{"name":"Proceedings Visualization '94","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125017702","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: 100
Vortex tubes in turbulent flows: identification, representation, reconstruction 紊流中的涡管:识别、表征、重建
Proceedings Visualization '94 Pub Date : 1994-04-01 DOI: 10.1109/VISUAL.1994.346327
D. Banks, B. Singer
{"title":"Vortex tubes in turbulent flows: identification, representation, reconstruction","authors":"D. Banks, B. Singer","doi":"10.1109/VISUAL.1994.346327","DOIUrl":"https://doi.org/10.1109/VISUAL.1994.346327","url":null,"abstract":"A new algorithm for identifying vortices in complex flows is presented. The scheme uses both the vorticity and pressure fields. A skeleton line along the center of a vortex is produced by a two-step predictor-corrector scheme. The technique uses the vector field to move in the direction of the skeleton line and the scalar field to correct the location in the plane perpendicular to the skeleton line. With an economical description of the vortex tube's cross-section, the skeleton compresses the representation of the flow by a factor of 4000 or more. We show how the reconstructed geometry of vortex tubes can be enhanced to help visualize helical motion.<<ETX>>","PeriodicalId":273215,"journal":{"name":"Proceedings Visualization '94","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126236579","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: 127
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