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Proceedings. Visualization '97 (Cat. No. 97CB36155)最新文献

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An interactive cerebral blood vessel exploration system 一种互动式脑血管探测系统
Proceedings. Visualization '97 (Cat. No. 97CB36155) Pub Date : 1997-10-01 DOI: 10.1109/VISUAL.1997.663917
Anna Puig, D. Tost, I. Navazo
{"title":"An interactive cerebral blood vessel exploration system","authors":"Anna Puig, D. Tost, I. Navazo","doi":"10.1109/VISUAL.1997.663917","DOIUrl":"https://doi.org/10.1109/VISUAL.1997.663917","url":null,"abstract":"An interactive cerebral blood vessel exploration system is described. It has been designed on the basis of neurosurgeons' requirements in order to assist them in the diagnosis of vascular pathologies. The system is based on the construction of a symbolic model of the vascular tree, with automatic identification and labelling of vessel bifurcations, aneurysms and stenoses. It provides several types of visualization: individual MRA (magnetic resonance angiography) slices, MIP (maximum intensity projection), shaded rendering, symbolic schemes and surface reconstruction.","PeriodicalId":225083,"journal":{"name":"Proceedings. Visualization '97 (Cat. No. 97CB36155)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121569306","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
Interval volume tetrahedrization 区间体积四面体化
Proceedings. Visualization '97 (Cat. No. 97CB36155) Pub Date : 1997-10-01 DOI: 10.1109/VISUAL.1997.663886
G. Nielson, J. Sung
{"title":"Interval volume tetrahedrization","authors":"G. Nielson, J. Sung","doi":"10.1109/VISUAL.1997.663886","DOIUrl":"https://doi.org/10.1109/VISUAL.1997.663886","url":null,"abstract":"The interval volume is a generalization of the isosurface commonly associated with the marching cubes algorithm. Based upon samples at the locations of a 3D rectilinear grid, the algorithm produces a triangular approximation to the surface defined by F(x,y,z)=c. The interval volume is defined by /spl alpha//spl les/F(x,y,z)/spl les//spl beta/. The authors describe an algorithm for computing a tetrahedrization of a polyhedral approximation to the interval volume.","PeriodicalId":225083,"journal":{"name":"Proceedings. Visualization '97 (Cat. No. 97CB36155)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124011142","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: 76
Brushing techniques for exploring volume datasets 探索卷数据集的刷刷技术
Proceedings. Visualization '97 (Cat. No. 97CB36155) Pub Date : 1997-10-01 DOI: 10.5555/266989.267114
P. C. Wong, R. Bergeron
{"title":"Brushing techniques for exploring volume datasets","authors":"P. C. Wong, R. Bergeron","doi":"10.5555/266989.267114","DOIUrl":"https://doi.org/10.5555/266989.267114","url":null,"abstract":"Describes several visualization techniques based on the notion of multi-resolution brushing to browse large 3D volume datasets. Our software is implemented using public-domain libraries, and is designed to run on average-equipped desktop computers such as a Linux machine with 32 MBytes of memory. Empirically, our system allows scientists to obtain information from a large dataset with over 8.3 million numbers in interactive time. We show that very large scientific volume datasets can be accessed and utilized without expensive hardware and software.","PeriodicalId":225083,"journal":{"name":"Proceedings. Visualization '97 (Cat. No. 97CB36155)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129598780","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: 15
UFLIC: a line integral convolution algorithm for visualizing unsteady flows ulic:一种用于非定常流动可视化的线积分卷积算法
Proceedings. Visualization '97 (Cat. No. 97CB36155) Pub Date : 1997-10-01 DOI: 10.1109/VISUAL.1997.663898
Han-Wei Shen, D. Kao
{"title":"UFLIC: a line integral convolution algorithm for visualizing unsteady flows","authors":"Han-Wei Shen, D. Kao","doi":"10.1109/VISUAL.1997.663898","DOIUrl":"https://doi.org/10.1109/VISUAL.1997.663898","url":null,"abstract":"The paper presents an algorithm, UFLIC (Unsteady Flow LIC), to visualize vector data in unsteady flow fields. Using line integral convolution (LIC) as the underlying method, a new convolution algorithm is proposed that can effectively trace the flow's global features over time. The new algorithm consists of a time-accurate value depositing scheme and a successive feedforward method. The value depositing scheme accurately models the flow advection, and the successive feedforward method maintains the coherence between animation frames. The new algorithm can produce time-accurate, highly coherent flow animations to highlight global features in unsteady flow fields. CFD scientists, for the first time, are able to visualize unsteady surface flows using the algorithm.","PeriodicalId":225083,"journal":{"name":"Proceedings. Visualization '97 (Cat. No. 97CB36155)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130651726","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: 121
Multiresolution compression and reconstruction 多分辨率压缩和重建
Proceedings. Visualization '97 (Cat. No. 97CB36155) Pub Date : 1997-10-01 DOI: 10.1109/VISUAL.1997.663901
O. Staadt, M. Gross, R. Weber
{"title":"Multiresolution compression and reconstruction","authors":"O. Staadt, M. Gross, R. Weber","doi":"10.1109/VISUAL.1997.663901","DOIUrl":"https://doi.org/10.1109/VISUAL.1997.663901","url":null,"abstract":"The paper presents a framework for multiresolution compression and geometric reconstruction of arbitrarily dimensioned data designed for distributed applications. Although being restricted to uniform sampled data, the versatile approach enables the handling of a large variety of real world elements. Examples include nonparametric, parametric and implicit lines, surfaces or volumes, all of which are common to large scale data sets. The framework is based on two fundamental steps: compression is carried out by a remote server and generates a bit-stream transmitted over the underlying network. Geometric reconstruction is performed by the local client and renders a piecewise linear approximation of the data. More precisely, the compression scheme consists of a newly developed pipeline starting from an initial B-spline wavelet precoding. The fundamental properties of wavelets allow progressive transmission and interactive control of the compression gain by means of global and local oracles. In particular the authors discuss the problem of oracles in semiorthogonal settings and propose sophisticated oracles to remove unimportant coefficients. In addition, geometric constraints such as boundary lines can be compressed in a lossless manner and are incorporated into the resulting bit-stream. The reconstruction pipeline performs a piecewise adaptive linear approximation of data using a fast and easy to use point removal strategy which works with any subsequent triangulation technique.","PeriodicalId":225083,"journal":{"name":"Proceedings. Visualization '97 (Cat. No. 97CB36155)","volume":"79 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114023093","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
Accelerated volume rendering using homogeneous region encoding 使用均匀区域编码加速体渲染
Proceedings. Visualization '97 (Cat. No. 97CB36155) Pub Date : 1997-10-01 DOI: 10.1109/VISUAL.1997.663880
Jason Freund, K. Sloan
{"title":"Accelerated volume rendering using homogeneous region encoding","authors":"Jason Freund, K. Sloan","doi":"10.1109/VISUAL.1997.663880","DOIUrl":"https://doi.org/10.1109/VISUAL.1997.663880","url":null,"abstract":"Previous accelerated volume rendering techniques have used auxiliary hierarchical datastructures to skip empty and homogeneous regions. Although some recent research has taken advantage of more efficient direct encoding techniques to skip empty regions, no work has been done to directly encode homogeneous but not empty regions. 3D distance transforms previously used to encode empty space can be extended to preprocess homogeneous regions as well, and these regions can be efficiently encoded and incorporated into volume ray-casting and back projection algorithms with a high degree of flexibility.","PeriodicalId":225083,"journal":{"name":"Proceedings. Visualization '97 (Cat. No. 97CB36155)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114033046","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: 43
Multiresolution tetrahedral framework for visualizing regular volume data 用于可视化规则体数据的多分辨率四面体框架
Proceedings. Visualization '97 (Cat. No. 97CB36155) Pub Date : 1997-10-01 DOI: 10.1109/VISUAL.1997.663869
Yong Zhou, Baoquan Chen, A. Kaufman
{"title":"Multiresolution tetrahedral framework for visualizing regular volume data","authors":"Yong Zhou, Baoquan Chen, A. Kaufman","doi":"10.1109/VISUAL.1997.663869","DOIUrl":"https://doi.org/10.1109/VISUAL.1997.663869","url":null,"abstract":"The authors present a multiresolution framework, called Multi-Tetra framework, that approximates volume data with different levels-of-detail tetrahedra. The framework is generated through a recursive subdivision of the volume data and is represented by binary trees. Instead of using a certain level of the Multi-Tetra framework for approximation, an error-based model (EBM) is generated by recursively fusing a sequence of tetrahedra from different levels of the Multi-Tetra framework. The EBM significantly reduces the number of voxels required to model an object, while preserving the original topology. The approach provides continuous distribution of rendered intensity or generated isosurfaces along boundaries of different levels-of-detail thus solving the crack problem. The model supports typical rendering approaches, such as marching cubes, direct volume projection, and splatting. Experimental results demonstrate the strengths of the approach.","PeriodicalId":225083,"journal":{"name":"Proceedings. Visualization '97 (Cat. No. 97CB36155)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129323201","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: 135
Haar wavelets over triangular domains with applications to multiresolution models for flow over a sphere 三角形域上的Haar小波及其在球体流动多分辨率模型中的应用
Proceedings. Visualization '97 (Cat. No. 97CB36155) Pub Date : 1997-10-01 DOI: 10.1109/VISUAL.1997.663871
G. Nielson, Il-Hong Jung, J. Sung
{"title":"Haar wavelets over triangular domains with applications to multiresolution models for flow over a sphere","authors":"G. Nielson, Il-Hong Jung, J. Sung","doi":"10.1109/VISUAL.1997.663871","DOIUrl":"https://doi.org/10.1109/VISUAL.1997.663871","url":null,"abstract":"Some new piecewise constant wavelets defined over nested triangulated domains are presented and applied to the problem of multiresolution analysis of flow over a spherical domain. These new, nearly orthogonal wavelets have advantages over the existing weaker biorthogonal wavelets. In the planar case of uniform areas, the wavelets converge to one of two fully orthogonal Haar wavelets. These new, fully orthogonal wavelets are proven to be the only possible wavelets of this type.","PeriodicalId":225083,"journal":{"name":"Proceedings. Visualization '97 (Cat. No. 97CB36155)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128825655","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: 66
Multivariate visualization using metric scaling 使用度量尺度的多变量可视化
Proceedings. Visualization '97 (Cat. No. 97CB36155) Pub Date : 1997-10-01 DOI: 10.1109/VISUAL.1997.663866
P. C. Wong, R. Bergeron
{"title":"Multivariate visualization using metric scaling","authors":"P. C. Wong, R. Bergeron","doi":"10.1109/VISUAL.1997.663866","DOIUrl":"https://doi.org/10.1109/VISUAL.1997.663866","url":null,"abstract":"The authors present an efficient visualization approach to support multivariate data exploration through a simple but effective low dimensional data overview based on metric scaling. A multivariate dataset is first transformed into a set of dissimilarities between all pairs of data records. A graph configuration algorithm based on principal components is then wed to determine the display coordinates of the data records in the low dimensional data overview. This overview provides a graphical summary of the multivariate data with reduced data dimensions, reduced data size, and additional data semantics. It can be used to enhance multidimensional data brushing, or to arrange the layout of other conventional multivariate visualization techniques. Real life data is used to demonstrate the approach.","PeriodicalId":225083,"journal":{"name":"Proceedings. Visualization '97 (Cat. No. 97CB36155)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116874506","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: 47
Viewing IGES files through VRML 使用VRML方式查看IGES文件
Proceedings. Visualization '97 (Cat. No. 97CB36155) Pub Date : 1997-10-01 DOI: 10.1109/VISUAL.1997.663924
J. Marti
{"title":"Viewing IGES files through VRML","authors":"J. Marti","doi":"10.1109/VISUAL.1997.663924","DOIUrl":"https://doi.org/10.1109/VISUAL.1997.663924","url":null,"abstract":"This paper describes our experiences with using the Virtual Reality Modeling Language (VRML) to view files in the Initial Graphics Exchange Specification (IGES) format using a Java-based translator from IGES to VRML and HTML (Hypertext Markup Language). The paper examines the conversion problems between IGES and VRML and presents some results of the process.","PeriodicalId":225083,"journal":{"name":"Proceedings. Visualization '97 (Cat. No. 97CB36155)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128064231","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
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