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Proceedings Visualization '98 (Cat. No.98CB36276)最新文献

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Art and Visualization: Oil and Water? 艺术与可视化:油与水?
Proceedings Visualization '98 (Cat. No.98CB36276) Pub Date : 1998-10-18 DOI: 10.1109/VISUAL.1998.745355
D. Laidlaw, D. Kremers, F. Frankel, V. Interrante, T. Banchoff
{"title":"Art and Visualization: Oil and Water?","authors":"D. Laidlaw, D. Kremers, F. Frankel, V. Interrante, T. Banchoff","doi":"10.1109/VISUAL.1998.745355","DOIUrl":"https://doi.org/10.1109/VISUAL.1998.745355","url":null,"abstract":"Art and visualization have progressed on parallel paths, often visiting similar points in the space of imagery. This panel session brings together artists who have scientific interests with scientists who have artistic interests. Together, we hope to stimulate excitement about searching the collective experience of centuries of artists to find concepts salient to visualization. Each of the panelists will discuss some of their work, giving concrete examples of joint art/science endeavors. We have organized our statements around the following questions:","PeriodicalId":399113,"journal":{"name":"Proceedings Visualization '98 (Cat. No.98CB36276)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133109827","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
POPTEX: Interactive ocean model visualization using texture mapping hardware 使用纹理映射硬件的交互式海洋模型可视化
Proceedings Visualization '98 (Cat. No.98CB36276) Pub Date : 1998-10-18 DOI: 10.1109/VISUAL.1998.745346
A. McPherson, M. Maltrud
{"title":"POPTEX: Interactive ocean model visualization using texture mapping hardware","authors":"A. McPherson, M. Maltrud","doi":"10.1109/VISUAL.1998.745346","DOIUrl":"https://doi.org/10.1109/VISUAL.1998.745346","url":null,"abstract":"Global circulation models are used to gain an understanding of the processes that affect the Earth's climate and may ultimately be used to assess the impact of humanity's activities on it. The POP ocean model developed at Los Alamos is an example of such a global circulation model that is being used to investigate the role of the ocean in the climate system. Data output from POP has traditionally been visualized using video technology which precludes rapid modification of visualization parameters and techniques. This paper describes a visualization system that leverages high speed graphics hardware, specifically texture mapping hardware, to accelerate data exploration to interactive rates. We describe the design of the system, the specific hardware features used, and provide examples of its use. The system is capable of viewing ocean circulation simulation results at up to 60 frames per second while loading texture memory at approximately 72 million texels per second.","PeriodicalId":399113,"journal":{"name":"Proceedings Visualization '98 (Cat. No.98CB36276)","volume":"15 12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127645031","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: 17
Simplification of tetrahedral meshes 四面体网格的简化
Proceedings Visualization '98 (Cat. No.98CB36276) Pub Date : 1998-10-18 DOI: 10.1109/VISUAL.1998.745315
Issac J. Trotts, B. Hamann, K. Joy, D. Wiley
{"title":"Simplification of tetrahedral meshes","authors":"Issac J. Trotts, B. Hamann, K. Joy, D. Wiley","doi":"10.1109/VISUAL.1998.745315","DOIUrl":"https://doi.org/10.1109/VISUAL.1998.745315","url":null,"abstract":"We present a method for the construction of multiple levels of tetrahedral meshes approximating a trivariate function at different levels of detail. Starting with an initial, high-resolution triangulation of a three-dimensional region, we construct coarser representation levels by collapsing tetrahedra. Each triangulation defines a linear spline function, where the function values associated with the vertices are the spline coefficients. Based on predicted errors, we collapse tetrahedron in the grid that do not cause the maximum error to exceed a use-specified threshold. Bounds are stored for individual tetrahedra and are updated as the mesh is simplified. We continue the simplification process until a certain error is reached. The result is a hierarchical data description suited for the efficient visualization of large data sets at varying levels of detail.","PeriodicalId":399113,"journal":{"name":"Proceedings Visualization '98 (Cat. No.98CB36276)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125011343","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: 78
Visualization in corneal topography 角膜地形图可视化
Proceedings Visualization '98 (Cat. No.98CB36276) Pub Date : 1998-10-18 DOI: 10.1109/VISUAL.1998.745335
F. Vos, H. Spoelder
{"title":"Visualization in corneal topography","authors":"F. Vos, H. Spoelder","doi":"10.1109/VISUAL.1998.745335","DOIUrl":"https://doi.org/10.1109/VISUAL.1998.745335","url":null,"abstract":"The anterior surface of the eye ('cornea') is extremely important for good sight. Instruments measuring corneal shape conventionally visualize the surface characteristics by mapping the instantaneous radius of curvature onto a rainbow colour scale. This technique is known to have important drawbacks. Firstly, not corneal shape itself is visualized, but rather second order surface properties. Secondly, the type of colouring produces well documented artifacts. We discuss visualization techniques for a more direct representation of the data. In a three part display, shape deviations are presented as a height surface in one window, height lines superimposed over the input image in another, and a colour mapped representation of the mean normal radius of curvature in a third. With the aid of some typical examples, it is shown that these visualizations are easy to interpret by the physician and overcome the limitations of the conventional techniques.","PeriodicalId":399113,"journal":{"name":"Proceedings Visualization '98 (Cat. No.98CB36276)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132034983","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: 5
Battlefield visualization on the responsive workbench 响应式工作台上的战场可视化
Proceedings Visualization '98 (Cat. No.98CB36276) Pub Date : 1998-10-18 DOI: 10.1109/VISUAL.1998.745344
J. Durbin, J. Swan, Brad Colbert, J. Crowe, R. King, T. King, Chris Scannell, Z. Wartell, T. Welsh
{"title":"Battlefield visualization on the responsive workbench","authors":"J. Durbin, J. Swan, Brad Colbert, J. Crowe, R. King, T. King, Chris Scannell, Z. Wartell, T. Welsh","doi":"10.1109/VISUAL.1998.745344","DOIUrl":"https://doi.org/10.1109/VISUAL.1998.745344","url":null,"abstract":"In this paper we describe a battlefield visualization system, called Dragon, which we have implemented on a virtual reality responsive workbench. The Dragon system has been successfully deployed as part of two large military exercises: the Hunter Warrior advanced warfighting experiment, in March 1997, and the Joint Counter Mine advanced concept tactical demonstration, in August and September 1997. We describe battlefield visualization, the Dragon system, and the workbench, and we describe our experiences as part of these two real-world deployments, with an emphasis on lessons learned and needed future work.","PeriodicalId":399113,"journal":{"name":"Proceedings Visualization '98 (Cat. No.98CB36276)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125364880","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: 57
Surface reconstruction with anisotropic density-scaled alpha shapes 具有各向异性密度尺度alpha形状的表面重建
Proceedings Visualization '98 (Cat. No.98CB36276) Pub Date : 1998-10-18 DOI: 10.1109/VISUAL.1998.745286
M. Teichmann, M. Capps
{"title":"Surface reconstruction with anisotropic density-scaled alpha shapes","authors":"M. Teichmann, M. Capps","doi":"10.1109/VISUAL.1998.745286","DOIUrl":"https://doi.org/10.1109/VISUAL.1998.745286","url":null,"abstract":"Generation of a three-dimensional model from an unorganized set of points is an active area of research in computer graphics. Alpha shapes can be employed to construct a surface which most closely reflects the object described by the points. However, no /spl alpha/-shape, for any value of /spl alpha/, can properly detail discontinuous regions of a model. We introduce herein two methods of improving the results of reconstruction using /spl alpha/-shapes: density-scaling, which modulates the value of a depending on the density of points in a region; and anisotropic shaping, which modulates the form of the /spl alpha/-ball based on point normals. We give experimental results that show the successes and limitations of our method.","PeriodicalId":399113,"journal":{"name":"Proceedings Visualization '98 (Cat. No.98CB36276)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131399939","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
Constrained optimal framings of curves and surfaces using quaternion Gauss maps 使用四元数高斯映射的曲线和曲面的约束优化框架
Proceedings Visualization '98 (Cat. No.98CB36276) Pub Date : 1998-10-18 DOI: 10.5555/288216.288324
A. Hanson
{"title":"Constrained optimal framings of curves and surfaces using quaternion Gauss maps","authors":"A. Hanson","doi":"10.5555/288216.288324","DOIUrl":"https://doi.org/10.5555/288216.288324","url":null,"abstract":"We propose a general paradigm for computing optimal coordinate frame fields that may be exploited to visualize curves and surfaces. Parallel transport framings, which work well for open curves, generally fail to have desirable properties for cyclic curves and for surfaces. We suggest that minimal quaternion measure provides an appropriate heuristic generalization of parallel transport. Our approach differs from minimal tangential acceleration approaches due to the addition of \"sliding ring\" constraints that fix one frame axis, but allow an axial rotational freedom whose value is varied in the optimization process. Our fundamental tool is the quaternion Gauss map, a generalization to quaternion space of the tangent map for curves and of the Gauss map for surfaces. The quaternion Gauss map takes 3D coordinate frame fields for curves and surfaces into corresponding curves and surfaces constrained to the space of possible orientations in quaternion space. Standard optimization tools provide application specific means of choosing optimal, e.g., length- or area-minimizing, quaternion frame fields in this constrained space.","PeriodicalId":399113,"journal":{"name":"Proceedings Visualization '98 (Cat. No.98CB36276)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131833770","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: 30
A higher-order method for finding vortex core lines 寻找涡旋核心线的一种高阶方法
Proceedings Visualization '98 (Cat. No.98CB36276) Pub Date : 1998-10-18 DOI: 10.1109/VISUAL.1998.745296
M. Roth, R. Peikert
{"title":"A higher-order method for finding vortex core lines","authors":"M. Roth, R. Peikert","doi":"10.1109/VISUAL.1998.745296","DOIUrl":"https://doi.org/10.1109/VISUAL.1998.745296","url":null,"abstract":"This paper presents a novel method to extract vortical structures from 3D CFD (computational fluid dynamics) vector fields automatically. It discusses the underlying theory and some aspects of the implementation. Making use of higher-order derivatives, the method is able to locate bent vortices. In order to structure the recognition procedure, we distinguish locating the core line from calculating attributes of strength and quality. Results are presented on several flow fields from the field of turbomachinery.","PeriodicalId":399113,"journal":{"name":"Proceedings Visualization '98 (Cat. No.98CB36276)","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134114796","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: 180
Contour interpolation and surface reconstruction of smooth terrain models 光滑地形模型的等高线插值与曲面重建
Proceedings Visualization '98 (Cat. No.98CB36276) Pub Date : 1998-10-18 DOI: 10.1109/VISUAL.1998.745281
Jianyun Chai, Takaharu Miyoshi, E. Nakamae
{"title":"Contour interpolation and surface reconstruction of smooth terrain models","authors":"Jianyun Chai, Takaharu Miyoshi, E. Nakamae","doi":"10.1109/VISUAL.1998.745281","DOIUrl":"https://doi.org/10.1109/VISUAL.1998.745281","url":null,"abstract":"Interpolating contours and reconstructing a rational surface from a contour map are two essential problems in terrain modeling. They are often met in the field of computer graphics and CAD systems based on geographic information systems. Although many approaches have been developed for these two problems, one difficulty still remains. That is how to ensure that the reconstructed surface is both smooth globally and coincides with the given contours exactly simultaneously. In this paper we solve the two problems in a unified framework. We use gradient controlled partial differential equation (PDE) surfaces to express terrain surfaces, in which the surface shapes can be globally determined by the contours, their locations, height and gradient values. The surface generated by this method is accurate in the sense of exactly coinciding with the original contours and smooth with C/sup 1/ continuity everywhere. The method can reveal smooth saddle shapes caused by surface branching of one to more and can make rational interpolated sub-contours between two or more neighboring contours.","PeriodicalId":399113,"journal":{"name":"Proceedings Visualization '98 (Cat. No.98CB36276)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114326100","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: 29
A unified approach for simplifying polygonal and spline models 简化多边形和样条模型的统一方法
Proceedings Visualization '98 (Cat. No.98CB36276) Pub Date : 1998-10-18 DOI: 10.1109/VISUAL.1998.745313
M. Gopi, Dinesh Manocha
{"title":"A unified approach for simplifying polygonal and spline models","authors":"M. Gopi, Dinesh Manocha","doi":"10.1109/VISUAL.1998.745313","DOIUrl":"https://doi.org/10.1109/VISUAL.1998.745313","url":null,"abstract":"We present a new approach for simplifying models composed of polygons or spline patches. Given an input model, the algorithm computes a new representation of the model in terms of triangular Bezier patches. It performs a series of geometric operations, consisting of patch merging and swapping diagonals, and makes use of batch connectivity information to generate C-LODs (curved levels-of-detail). Each C-LOD is represented using cubic triangular Bezier patches. The C-LODs provide a compact representation for storing the model. The algorithm tries to minimize the surface deviation error and maintains continuity at patch boundaries. Given the CLODs, the algorithm can generate their polygonal approximations using static and dynamic tessellation schemes. It has been implemented and we highlight its performance on a number of polygonal and spline models.","PeriodicalId":399113,"journal":{"name":"Proceedings Visualization '98 (Cat. No.98CB36276)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125409379","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
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