IEEE Symposium on Volume Visualization (Cat. No.989EX300)最新文献

A real-time volume rendering architecture using an adaptive resampling scheme for parallel and perspective projections 使用自适应重采样方案的实时体绘制架构，用于并行和透视投影

IEEE Symposium on Volume Visualization (Cat. No.989EX300) Pub Date : 1998-10-01 DOI: 10.1145/288126.288146

M. Ogata, T. Ohkami, H. Lauer, H. Pfister

引用次数: 15

Coloring voxel-based objects for virtual endoscopy 用于虚拟内窥镜的基于体素的对象着色

IEEE Symposium on Volume Visualization (Cat. No.989EX300) Pub Date : 1998-10-01 DOI: 10.1145/288126.288140

Omer Shibolet, D. Cohen-Or

引用次数: 18

Opacity-weighted color interpolation for volume sampling 体积采样的不透明度加权颜色插值

IEEE Symposium on Volume Visualization (Cat. No.989EX300) Pub Date : 1998-10-01 DOI: 10.1145/288126.288186

C. Wittenbrink, T. Malzbender, Michael E. Goss

引用次数: 87

Adaptive perspective ray casting 自适应透视光线投射

IEEE Symposium on Volume Visualization (Cat. No.989EX300) Pub Date : 1998-10-01 DOI: 10.1145/288126.288154

K. Kreeger, I. Bitter, F. Dachille, Baoquan Chen, A. Kaufman

引用次数: 34

Probabilistic segmentation of volume data for visualization using SOM-PNN classifier 基于SOM-PNN分类器的体数据可视化概率分割

IEEE Symposium on Volume Visualization (Cat. No.989EX300) Pub Date : 1998-10-01 DOI: 10.1145/288126.288162

Feng Ma, Wenping Wang, W. W. Tsang, Zesheng Tang, Shaowei Xia, Xin Tong

引用次数: 24

Adding shadows to a texture-based volume renderer 在基于纹理的体渲染器中添加阴影

IEEE Symposium on Volume Visualization (Cat. No.989EX300) Pub Date : 1998-10-01 DOI: 10.1145/288126.288149

U. Behrens, R. Ratering

{"title":"Adding shadows to a texture-based volume renderer","authors":"U. Behrens, R. Ratering","doi":"10.1145/288126.288149","DOIUrl":"https://doi.org/10.1145/288126.288149","url":null,"abstract":"Texture based volume rendering is a technique to efficiently visualize volumetric data using texture mapping hardware. We present an algorithm that extends this approach to render shadows for the volume. The algorithm takes advantage of fast frame buffer operations which modern graphics hardware offers, but does not depend on any special purpose hardware. The visual impression of the final image is significantly improved by bringing more structure and three dimensional information into the often foggyish appearance of texture based volume renderings. Although the algorithm does not perform lighting calculations, the resulting image has a shaded appearance, which is a further visual cue to spatial understanding of the data and lets the images appear more realistic. As calculating the shadows is independent of the visualization process it can be applied to any form of volume visualization, though volume rendering based on two- or three-dimensional texture mapping hardware makes the most sense. Compared to unshadowed texture based volume rendering, performance decreases by less than 50%, which is still sufficient to guarantee interactive manipulation of the volume data. In the special case where only the camera is moving with the light position fixed to the scene there is no performance decrease at all, because recalculation has only to be done if the position of the light source with respect to the volume changes.","PeriodicalId":167141,"journal":{"name":"IEEE Symposium on Volume Visualization (Cat. No.989EX300)","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133636597","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: 89

Volume animation using the skeleton tree 使用骨架树的体积动画

IEEE Symposium on Volume Visualization (Cat. No.989EX300) Pub Date : 1998-10-01 DOI: 10.1145/288126.288152

N. Gagvani, Deepak R. Kenchammana-Hosekote, D. Silver

引用次数: 51

An exact interactive time visibility ordering algorithm for polyhedral cell complexes 多面体细胞复合体的精确交互时间可视性排序算法

IEEE Symposium on Volume Visualization (Cat. No.989EX300) Pub Date : 1998-10-01 DOI: 10.1145/288126.288170

Cláudio T. Silva, Joseph S. B. Mitchell, Peter L. Williams

{"title":"An exact interactive time visibility ordering algorithm for polyhedral cell complexes","authors":"Cláudio T. Silva, Joseph S. B. Mitchell, Peter L. Williams","doi":"10.1145/288126.288170","DOIUrl":"https://doi.org/10.1145/288126.288170","url":null,"abstract":"A visibility ordering of a set of objects, from a given viewpoint, is a total order on the objects such that if object a obstructs object b, then b precedes a in the ordering. Such orderings are extremely useful for rendering volumetric data. The authors present an algorithm that generates a visibility ordering of the cells of an unstructured mesh, provided that the cells are convex polyhedra and nonintersecting, and that the visibility ordering graph does not contain cycles. The overall mesh may be nonconvex and it may have disconnected components. The technique employs the sweep paradigm to determine an ordering between pairs of exterior (mesh boundary) cells which can obstruct one another. It then builds on Williams' (1992) MPVO algorithm which exploits the ordering implied by adjacencies within the mesh. The partial ordering of the exterior cells found by sweeping is used to augment the DAG created in Phase II of the MPVO algorithm. The method thus removes the assumption of the MPVO algorithm that the mesh be convex and connected, and thereby allows one to extend the MPVO algorithm, without using the heuristics that were originally suggested by Williams (and are sometimes problematic). The resulting XMPVO algorithm has been analyzed, and a variation of it has been implemented for unstructured tetrahedral meshes; they provide experimental evidence that it performs very well in practice.","PeriodicalId":167141,"journal":{"name":"IEEE Symposium on Volume Visualization (Cat. No.989EX300)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133784068","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: 64

Edge preservation in volume rendering using splatting 使用飞溅的体绘制中的边缘保存

IEEE Symposium on Volume Visualization (Cat. No.989EX300) Pub Date : 1998-10-01 DOI: 10.1145/288126.288158

Jian Huang, R. Crawfis, D. Stredney

引用次数: 12

3D scan conversion of CSG models into distance volumes CSG模型到距离体的三维扫描转换

IEEE Symposium on Volume Visualization (Cat. No.989EX300) Pub Date : 1998-10-01 DOI: 10.1145/288126.288137

D. Breen, S. Mauch, Ross T. Whitaker

{"title":"3D scan conversion of CSG models into distance volumes","authors":"D. Breen, S. Mauch, Ross T. Whitaker","doi":"10.1145/288126.288137","DOIUrl":"https://doi.org/10.1145/288126.288137","url":null,"abstract":"A distance volume is a volume dataset where the value stored at each voxel is the shortest distance to the surface of the object being represented by the volume. Distance volumes are a useful representation in a number of computer graphics applications. We present a technique for generating a distance volume with sub-voxel accuracy from one type of geometric model, a constructive solid geometry (CSG) model consisting of superellipsoid primitives. The distance volume is generated in a two step process. The first step calculates the shortest distance to the CSG model at a set of points within a narrow band around the evaluated surface. Additionally, a second set of points, labeled the zero set, which lies on the CSG model's surface are computed. A point in the zero set is associated with each point in the narrow band. Once the narrow band and zero set are calculated, a fast marching method is employed to propagate the shortest distance and closest point information out to the remaining voxels in the volume. Our technique has been used to scan convert a number of CSG models, producing distance volumes which have been utilized in a variety of computer graphics applications, e.g. CSG surface evaluation, offset surface generation, and 3D model morphing.","PeriodicalId":167141,"journal":{"name":"IEEE Symposium on Volume Visualization (Cat. No.989EX300)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125251563","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: 129