Proceedings of 1996 Symposium on Volume Visualization最新文献

Visualizing vector fields using line integral convolution and dye advection 可视化向量场使用线积分卷积和染料平流

Proceedings of 1996 Symposium on Volume Visualization Pub Date : 1996-10-01 DOI: 10.1109/SVV.1996.558044

Han-Wei Shen, Christopher R. Johnson, K. Ma

引用次数: 124

Hardware assisted volume rendering of unstructured grids by incremental slicing 基于增量切片的非结构化网格体绘制

Proceedings of 1996 Symposium on Volume Visualization Pub Date : 1996-10-01 DOI: 10.1109/SVV.1996.558043

David M. Reed, R. Yagel, A. Law, Po-Wen Shin, N. Shareef

{"title":"Hardware assisted volume rendering of unstructured grids by incremental slicing","authors":"David M. Reed, R. Yagel, A. Law, Po-Wen Shin, N. Shareef","doi":"10.1109/SVV.1996.558043","DOIUrl":"https://doi.org/10.1109/SVV.1996.558043","url":null,"abstract":"Some of the more important research results in computational science rely on the use of simulation methods that operate on unstructured grids. However, these grids, composed of a set of polyhedra, introduce exceptional problems with respect to data visualization. Volume rendering techniques, originally developed to handle rectangular grids, show significant promise for general use with unstructured grids as well. The main disadvantage of this approach, compared to isosurfaces, particles or other visualization tools is its non-interactive performance. We describe an efficient method for rendering unstructured grids that is based on incremental slicing and hardware polygon rendering. For a given view direction, the grid vertices are transformed to image space using available graphics hardware. We then incrementally compute the 2D polygon-meshes that result from letting a set of planes, parallel to the screen plane, intersect (slice) the transformed grid. Finally, we use the graphics hardware to render (interpolate-fill) the polygon-meshes and composite them in visibility order. We show that, in addition to being faster than existing methods, our approach also provides adaptive control and progressive image generation. The adaptive method provides user control to ensure that the contribution of every cell is included in the final image or to limit the number of cells that are missed.","PeriodicalId":168501,"journal":{"name":"Proceedings of 1996 Symposium on Volume Visualization","volume":"43 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124471787","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: 115

Optimal isosurface extraction from irregular volume data 不规则体数据的优化等值面提取

Proceedings of 1996 Symposium on Volume Visualization Pub Date : 1996-10-01 DOI: 10.1109/SVV.1996.558040

Paolo Cignoni, C. Montani, E. Puppo, Roberto Scopigno

引用次数: 97

Cube-4-a scalable architecture for real-time volume rendering cube -4:用于实时体绘制的可扩展架构

Proceedings of 1996 Symposium on Volume Visualization Pub Date : 1996-10-01 DOI: 10.1109/SVV.1996.558042

H. Pfister, A. Kaufman

引用次数: 148

3D shock wave visualization on unstructured grids 非结构网格上的三维激波可视化

Proceedings of 1996 Symposium on Volume Visualization Pub Date : 1996-10-01 DOI: 10.1109/SVV.1996.558049

K. Ma, J. Rosendale, Willem Vermeer

{"title":"3D shock wave visualization on unstructured grids","authors":"K. Ma, J. Rosendale, Willem Vermeer","doi":"10.1109/SVV.1996.558049","DOIUrl":"https://doi.org/10.1109/SVV.1996.558049","url":null,"abstract":"A critical issue in understanding high speed flows is the study of shock waves. The paper summarizes our research on techniques for the detection and visualization of shock waves occuring in simulations of three dimensional flows on unstructured grids. Detection algorithms based on Mach number, density gradient and directional derivatives are compared using a data set from calculations of a transonic flow with a weak double shock around an airfoil. Both surface and volume rendering techniques are used to display the shocks. The issues in this research area are very much like those occurring in medical imaging. Since the data themselves (in this case the results of the fluid dynamics simulation) are intrinsically low resolution and noisy, properly extracting and visualizing the shock is very difficult. In this environment, blurry, low resolution techniques, like the splatting volume rendering, seem to do rather well. More complex schemes, using sophisticated numerical shock detectors coupled with polygon rendering, produce visually sharper shocks, but also introduce \"graphics artifacts,\" which complicate understanding of the flow physics. On the other hand, visualization results produced with techniques like splatting are, in effect, relying more on the human visual system to compensate for limited resolution in the simulation.","PeriodicalId":168501,"journal":{"name":"Proceedings of 1996 Symposium on Volume Visualization","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128025634","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: 62

Fast sliding thin slab volume visualization 快速滑动薄板体积可视化

Proceedings of 1996 Symposium on Volume Visualization Pub Date : 1996-10-01 DOI: 10.1109/SVV.1996.558048

S. Y. Yen, S. Napel, G. Rubin

引用次数: 19

Fast volume rendering with adjustable color maps 快速体渲染与可调的颜色地图

Proceedings of 1996 Symposium on Volume Visualization Pub Date : 1996-10-01 DOI: 10.1109/SVV.1996.558037

K. Kaneda, Y. Dobashi, K. Yamamoto, H. Yamashita

引用次数: 16

Direct volume rendering with shading via three-dimensional textures 直接体渲染与阴影通过三维纹理

Proceedings of 1996 Symposium on Volume Visualization Pub Date : 1996-10-01 DOI: 10.1109/SVV.1996.558039

A. V. Gelder, Kwansik Kim

{"title":"Direct volume rendering with shading via three-dimensional textures","authors":"A. V. Gelder, Kwansik Kim","doi":"10.1109/SVV.1996.558039","DOIUrl":"https://doi.org/10.1109/SVV.1996.558039","url":null,"abstract":"A new and easy-to-implement method for direct volume rendering that uses 3D texture maps for acceleration, and incorporates directional lighting, is described. The implementation, called Voltx, produces high-quality images at nearly interactive speeds on workstations with hardware support for three-dimensional texture maps. Previously reported methods did not incorporate a light model, and did not address issues of multiple texture maps for large volumes. Our research shows that these extensions impact performance by about a factor of ten. Voltx supports orthographic, perspective, and stereo views. This paper describes the theory and implementation of this technique, and compares it to the shear-warp factorization approach. A rectilinear data set is converted into a three-dimensional texture map containing color and opacity information. Quantized normal vectors and a lookup table provide efficiency. A new tesselation of the sphere is described, which serves as the basis for normal-vector quantization. A new gradient-based shading criterion is described, in which the gradient magnitude is interpreted in the context of the field-data value and the material classification parameters, and not in isolation. In the rendering phase, the texture map is applied to a stack of parallel planes, which effectively cut the texture into many slabs. The slabs are composited to form an image.","PeriodicalId":168501,"journal":{"name":"Proceedings of 1996 Symposium on Volume Visualization","volume":"520 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123066249","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: 244

Fast rendering of irregular grids 快速渲染不规则网格

Proceedings of 1996 Symposium on Volume Visualization Pub Date : 1996-10-01 DOI: 10.1109/SVV.1996.558038

Cláudio T. Silva, Joseph S. B. Mitchell, A. Kaufman

引用次数: 46

Classification and local error estimation of interpolation and derivative filters for volume rendering 体绘制中插值与导数滤波器的分类与局部误差估计

Proceedings of 1996 Symposium on Volume Visualization Pub Date : 1996-10-01 DOI: 10.1109/SVV.1996.558045

Torsten Möller, R. Machiraju, K. Mueller, R. Yagel

引用次数: 39