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

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The Gridfit algorithm: an efficient and effective approach to visualizing large amounts of spatial data Gridfit算法:一种高效和有效的方法来可视化大量的空间数据
Proceedings Visualization '98 (Cat. No.98CB36276) Pub Date : 1998-10-18 DOI: 10.1109/VISUAL.1998.745301
D. Keim, A. Herrmann
{"title":"The Gridfit algorithm: an efficient and effective approach to visualizing large amounts of spatial data","authors":"D. Keim, A. Herrmann","doi":"10.1109/VISUAL.1998.745301","DOIUrl":"https://doi.org/10.1109/VISUAL.1998.745301","url":null,"abstract":"In a large number of applications, data is collected and referenced by their spatial locations. Visualizing large amounts of spatially referenced data on a limited-size screen display often results in poor visualizations due to the high degree of overplotting of neighboring datapoints. We introduce a new approach to visualizing large amounts of spatially referenced data. The basic idea is to intelligently use the unoccupied pixels of the display instead of overplotting data points. After formally describing the problem, we present two solutions which are based on: placing overlapping data points on the nearest unoccupied pixel; and shifting data points along a screen-filling curve (e.g., Hilbert-curve). We then develop a more sophisticated approach called Gridfit, which is based on a hierarchical partitioning of the data space. We evaluate all three approaches with respect to their efficiency and effectiveness and show the superiority of the Gridfit approach. For measuring the effectiveness, we not only present the resulting visualizations but also introduce mathematical effectiveness criteria measuring properties of the generated visualizations with respect to the original data such as distance- and position-preservation.","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":"127259293","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: 86
Visualization of scalar topology for structural enhancement 用于结构增强的标量拓扑可视化
Proceedings Visualization '98 (Cat. No.98CB36276) Pub Date : 1998-10-18 DOI: 10.1109/VISUAL.1998.745284
C. Bajaj, Valerio Pascucci, D. Schikore
{"title":"Visualization of scalar topology for structural enhancement","authors":"C. Bajaj, Valerio Pascucci, D. Schikore","doi":"10.1109/VISUAL.1998.745284","DOIUrl":"https://doi.org/10.1109/VISUAL.1998.745284","url":null,"abstract":"Scalar fields arise in every scientific application. Existing scalar visualization techniques require that the user infers the global scalar structure from what is frequently an insufficient display of information. We present a visualization technique which numerically detects the structure at all scales, removing from the user the responsibility of extracting information implicit in the data, and presenting the structure explicitly for analysis. We further demonstrate how scalar topology detection proves useful for correct visualization and image processing applications such as image co-registration, isocontouring, and mesh compression.","PeriodicalId":399113,"journal":{"name":"Proceedings Visualization '98 (Cat. No.98CB36276)","volume":"64 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":"129826645","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: 96
Simplifying surfaces with color and texture using quadric error metrics 使用二次误差度量简化带有颜色和纹理的表面
Proceedings Visualization '98 (Cat. No.98CB36276) Pub Date : 1998-10-18 DOI: 10.1109/VISUAL.1998.745312
Michael Garland, Paul S. Heckbert
{"title":"Simplifying surfaces with color and texture using quadric error metrics","authors":"Michael Garland, Paul S. Heckbert","doi":"10.1109/VISUAL.1998.745312","DOIUrl":"https://doi.org/10.1109/VISUAL.1998.745312","url":null,"abstract":"There are a variety of application areas in which there is a need for simplifying complex polygonal surface models. These models often have material properties such as colors, textures, and surface normals. Our surface simplification algorithm, based on iterative edge contraction and quadric error metrics, can rapidly produce high quality approximations of such models. We present a natural extension of our original error metric that can account for a wide range of vertex attributes.","PeriodicalId":399113,"journal":{"name":"Proceedings Visualization '98 (Cat. No.98CB36276)","volume":"79 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":"124429884","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: 575
Volumetric modeling of acoustic fields in CNMAT's sound spatialization theatre CNMAT声空间化剧院中声场的体积建模
Proceedings Visualization '98 (Cat. No.98CB36276) Pub Date : 1998-09-01 DOI: 10.1109/VISUAL.1998.745338
A. Kaup, Sami Khoury, A. Freed, D. Wessel
{"title":"Volumetric modeling of acoustic fields in CNMAT's sound spatialization theatre","authors":"A. Kaup, Sami Khoury, A. Freed, D. Wessel","doi":"10.1109/VISUAL.1998.745338","DOIUrl":"https://doi.org/10.1109/VISUAL.1998.745338","url":null,"abstract":"A new tool for real time visualization of acoustic sound fields has been developed for a new sound spatialization theatre. The theatre is described and several applications of the acoustic and volumetric modeling software are presented. The visualization system described is a valuable tool for spatial sound researchers, sound engineers and composers using CNMAT's sound spatialization theatre. Further work is in progress on the adaptation of better acoustic simulation methods (M. Monks et al., 1996) for more accurate display of the quality of the reverberant field. The room database will be automatically extracted from a model built with 3D modeling software. Volume visualization strategies are being explored to display sounds in spectral and impulse response form.","PeriodicalId":399113,"journal":{"name":"Proceedings Visualization '98 (Cat. No.98CB36276)","volume":"151 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124301478","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: 22
Converting sets of polygons to manifold surfaces by cutting and stitching 通过切割和拼接将多边形集合转换为流形表面
Proceedings Visualization '98 (Cat. No.98CB36276) Pub Date : 1998-07-21 DOI: 10.1145/280953.281628
A. Guéziec, G. Taubin, F. Lazarus, William P. Horn
{"title":"Converting sets of polygons to manifold surfaces by cutting and stitching","authors":"A. Guéziec, G. Taubin, F. Lazarus, William P. Horn","doi":"10.1145/280953.281628","DOIUrl":"https://doi.org/10.1145/280953.281628","url":null,"abstract":"Many real world polygonal surfaces contain topological singularities that represent a challenge for processes such as simplification, compression, smoothing, etc. We present an algorithm for removing such singularities, thus converting non manifold sets of polygons to manifold polygonal surfaces (orientable if necessary). We identify singular vertices and edges, multiply singular vertices, and cut through singular edges. In an optional stitching phase, we join surface boundary edges that were cut, or whose endpoints are sufficiently close, while guaranteeing that the surface is a manifold. We study two different stitching strategies called \"edge pinching\" and \"edge snapping\"; when snapping, special care is required to avoid re-creating singularities. The algorithm manipulates the polygon vertex indices (surface topology) and essentially ignores vertex coordinates (surface geometry). Except for the optional stitching, the algorithm has a linear complexity in the number of vertices edges and faces, and require no floating point operation.","PeriodicalId":399113,"journal":{"name":"Proceedings Visualization '98 (Cat. No.98CB36276)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124047061","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: 107
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