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Conference stringclasses 6 values	Year int64 1.99k 2.03k	Title stringlengths 8 187	DOI stringlengths 16 32	Abstract stringlengths 128 7.15k ⌀	Accessible bool 2 classes	Early bool 2 classes	AuthorNames-Deduped listlengths 1 29	Award listlengths 0 2	Resources listlengths 0 5	ResourceLinks listlengths 0 10
InfoVis	2,003	Multiscale Visualization of Small World Networks	10.1109/INFVIS.2003.1249011	Many networks under study in information visualization are "small world" networks. These networks first appeared in the study of social networks and were shown to be relevant models in other application domains such as software reverse engineering and biology. Furthermore, many of these networks actually have a multisc...	false	false	[ "David Auber", "Yves Chiricota", "Fabien Jourdan", "Guy Melançon" ]	[]	[]	[]
InfoVis	2,003	Smooth and efficient zooming and panning	10.1109/INFVIS.2003.1249004	Large 2D information spaces, such as maps, images, or abstract visualizations, require views at various level of detail: close ups to inspect details, overviews to maintain (literally) an overview. Users often switch between these views. We discuss how smooth animations from one view to another can be defined. To this ...	false	false	[ "Jarke J. van Wijk", "Wim A. A. Nuij" ]	[ "BP" ]	[]	[]
InfoVis	2,003	Thinking with visualization	10.1109/INFVIS.2003.1249001	Visualizations help us to solve problems by finding patterns in graphical displays of data. For example, finding a pattern of highly connected components in a node link diagram can help us understand the architecture of a software system. Finding a long, red, fairly straight line on a map can show us the best way of dr...	false	false	[ "Colin Ware" ]	[]	[]	[]
InfoVis	2,003	Thread Arcs: an email thread visualization	10.1109/INFVIS.2003.1249028	This paper describes Thread Arcs, a novel interactive visualization technique designed to help people use threads found in email. Thread Arcs combine the chronology of messages with the branching tree structure of a conversational thread in a mixed-model visualization by Venolia and Neustaedter (2003) that is stable an...	false	false	[ "Bernard Kerr" ]	[]	[]	[]
InfoVis	2,003	Using multilevel call matrices in large software projects	10.1109/INFVIS.2003.1249030	Traditionally, node link diagrams are the prime choice when it comes to visualizing software architectures. However, node link diagrams often fall short when used to visualize large graph structures. In this paper we investigate the use of call matrices as visual aids in the management of large software projects. We ar...	false	false	[ "Frank van Ham" ]	[]	[]	[]
InfoVis	2,003	Visualization of Labeled Data Using Linear Transformation	10.1109/INFVIS.2003.1249017	We present a novel family of data-driven linear transformations, aimed at visualizing multivariate data in a low-dimensional space in a way that optimally preserves the structure of the data. The well-studied PCA and Fisher's LDA (linear discriminant analysis) are shown to be special members in this family of transform...	false	false	[ "Yehuda Koren", "Liran Carmel" ]	[]	[]	[]
InfoVis	2,003	Visualization of large-scale customer satisfaction surveys using a parallel coordinate tree	10.1109/INFVIS.2003.1249026	Satisfaction surveys are an important measurement tool in fields such as market research or human resources management. Serious studies consist of numerous questions and contain answers from large population samples. Aggregation on both sides, the questions asked as well as the answers received, turns the multidimensio...	false	false	[ "Dominique Brodbeck", "Luc Girardin" ]	[]	[]	[]
InfoVis	2,003	Visualizing evolving networks: minimum spanning trees versus pathfinder networks	10.1109/INFVIS.2003.1249010	Network evolution is an ubiquitous phenomenon in a wide variety of complex systems. There is an increasing interest in statistically modeling the evolution of complex networks such as small-world networks and scale-free networks. In this article, we address a practical issue concerning the visualizations of co-citation...	false	false	[ "Chaomei Chen", "Steven A. Morris" ]	[]	[]	[]
EuroVis	2,003	A Robust Level-Set Algorithm for Centerline Extraction	10.2312/VisSym/VisSym03/185-194	We present a robust method for extracting 3D centerlines from volumetric datasets. We start from a 2D skeletonization method to locate voxels centered with respect to three orthogonal slicing directions. Next, we introduce a new detection criterion to extract the centerline voxels from the above skeletons, followed by ...	false	false	[ "Alexandru C. Telea", "Anna Vilanova" ]	[]	[]	[]
EuroVis	2,003	Accelerated Force Computation for Physics-Based Information Visualization	10.2312/VisSym/VisSym03/059-066	Visualization of similarity is an emerging technique for analyzing relation-based data sets. A common way of computing the respective layouts in an information space is to employ a physics-based mass-spring system. Force computation, however, is costly and of order N2. In this paper, we propose a new acceleration metho...	false	false	[ "Ming C. Hao", "Umeshwar Dayal", "Daniel Cotting", "Thomas Holenstein", "Markus H. Gross" ]	[]	[]	[]
EuroVis	2,003	Adaptive Smooth Scattered Data Approximation for Large-scale Terrain Visualization	10.2312/VisSym/VisSym03/177-184	We present a fast method that adaptively approximates large-scale functional scattered data sets with hierarchical B-splines. The scheme is memory efficient, easy to implement and produces smooth surfaces. It combines adaptive clustering based on quadtrees with piecewise polynomial least squares approximations. The res...	false	false	[ "Martin Bertram 0001", "Xavier Tricoche", "Hans Hagen" ]	[]	[]	[]
EuroVis	2,003	Analysis of HDAF for Interpolation and Noise Suppression in Volume Rendering	10.2312/VisSym/VisSym03/095-104	In this paper, we evaluate the HDAF (Hermite Distributed Approximating Functionals) family of interpolation and derivative functions, with respect to their accuracy for reliable volume rendering, and compare them with other interpolation and derivative estimation filters. We utilize several different evaluation methods...	false	false	[ "K. Anderson", "Ioannis A. Kakadiaris", "Manos Papadakis", "Donald J. Kouri", "David K. Hoffman" ]	[]	[]	[]
EuroVis	2,003	Anti-Aliased Volume Extraction	10.2312/VisSym/VisSym03/113-122	We present a technique to extract regions from a volumetric dataset without introducing any aliasing so that the extracted volume can be explored using direct volume rendering techniques. Extracting regions using binary masks generated by contemporary segmentation approaches typically introduces aliasing at the boundar...	false	false	[ "Sarang Lakare", "Arie E. Kaufman" ]	[]	[]	[]
EuroVis	2,003	Case Study: Cellar Scaffold Extraction Using Crest Point for Volume Rendering	10.2312/VisSym/VisSym03/123-128	Extraction of scaffolds, such as the meiotic spindles, a 3D tubular framework consisting of the microtubules, from conforcal laser scanning microscopy (CLSM) data of a cell is a challenge in biological image processing. It is of major importance in the research of microtubule anchor proteins, and molecular motor mechan...	false	false	[ "Jiuxiang Hu", "D. Page Baluch", "Anshuman Razdan", "Gregory M. Nielson", "Gerald E. Farin", "David G. Capco" ]	[]	[]	[]
EuroVis	2,003	Case Study: Comparing Two Methods for Filtering External Motion in 4D Confocal Microscopy Data	10.2312/VisSym/VisSym03/129-134	In this case study, we compare two methods for filtering external motion in time dependent volume data sets acquired from confocal microscopy. The pros and cons of a landmark based and a voxel based method are discussed. We show that filtering external motion is an essential first step for the visualization of confocal...	false	false	[ "Wim C. de Leeuw", "Robert van Liere" ]	[]	[]	[]
EuroVis	2,003	Contouring Curved Quadratic Elements	10.2312/VisSym/VisSym03/167-176	We show how to extract a contour line (or isosurface) from quadratic elements---specifically from quadratic triangles and tetrahedra. We also devise how to transform the resulting contour line (or surface) into a quartic curve (or surface) based on a curved-triangle (curved-tetrahedron) mapping. A contour in a bivariat...	false	false	[ "David F. Wiley", "Henry R. Childs", "Benjamin F. Gregorski", "Bernd Hamann", "Kenneth I. Joy" ]	[]	[]	[]
EuroVis	2,003	Detecting Critical Regions in Scalar Fields	10.2312/VisSym/VisSym03/085-094	Trivariate data is commonly visualized using isosurfaces or direct volume rendering. When exploring scalar fields by isosurface extraction it is often difficult to choose isovalues that convey "useful" information. The significance of visualizations using direct volume rendering depends on the choice of good transfer f...	false	false	[ "Gunther H. Weber", "Gerik Scheuermann", "Bernd Hamann" ]	[]	[]	[]
EuroVis	2,003	Detection of constrictions on closed polyhedral surfaces	10.2312/VisSym/VisSym03/067-074	We define constrictions on a surface as simple closed geodesic curves, i.e. curves whose length is locally minimal. They can be of great interests in order to cut the surface in smaller parts. In this paper, we present a method to detect constrictions on closed triangulated surfaces. Our algorithm is based on a progres...	false	false	[ "Franck Hétroy", "Dominique Attali" ]	[]	[]	[]
EuroVis	2,003	Efficient Visualization of Large Medical Image Datasets on Standard PC Hardware	10.2312/VisSym/VisSym03/135-140	Fast and accurate algorithms for medical image processing and visualization are becoming increasingly important due to routine acquisition and processing of rapidly growing amounts of data in clinical practice. At the same time, standard computer hardware is becoming sufficiently powerful to be used in applications whi...	false	false	[ "Vladimir Pekar", "Daniel Hempel", "Gundolf Kiefer", "Marc Busch", "Jürgen Weese" ]	[]	[]	[]
EuroVis	2,003	Feature Flow Fields	10.2312/VisSym/VisSym03/141-148	Feature tracking algorithms for instationary vector fields are usually based on a correspondence analysis of the features at different time steps. This paper introduces a method for feature tracking which is based on the integration of stream lines of a certain vector field called feature flow field. We analyze for whi...	false	false	[ "Holger Theisel", "Hans-Peter Seidel" ]	[]	[]	[]
EuroVis	2,003	Hardware-assisted View-dependent Isosurface Extraction using Spherical Partition	10.2312/VisSym/VisSym03/267-276	Extracting only the visible portion of an isosurface can improve both the computation efficiency and the rendering speed. However, the visibility test overhead can be quite high for large scale data sets. In this paper, we present a view-dependent isosurface extraction algorithm utilizing occlusion query hardware to ac...	false	false	[ "Jinzhu Gao", "Han-Wei Shen" ]	[]	[]	[]
EuroVis	2,003	Hierarchical Isosurface Segmentation Based on Discrete Curvature	10.2312/VisSym/VisSym03/249-258	A high-level approach to describe the characteristics of a surface is to segment it into regions of uniform curvature behavior and construct an abstract representation given by a (topology) graph. We propose a surface segmentation method based on discrete mean and Gaussian curvature estimates. The surfaces are obtained...	false	false	[ "Fabien Vivodtzev", "Lars Linsen", "Georges-Pierre Bonneau", "Bernd Hamann", "Kenneth I. Joy", "Bruno A. Olshausen" ]	[]	[]	[]
EuroVis	2,003	Improving Topological Segmentation of Three-dimensional Vector Fields	10.2312/VisSym/VisSym03/203-212	We present three enhancements to accelerate the extraction of separatrices of three-dimensional vector fields, using intelligently selected "sample" streamlines. These enhancements reduce the number of needed sample streamlines and their propagation length. Inflow/outflow matching supports the simultaneous extraction o...	false	false	[ "Karim Mahrous", "Janine Bennett", "Bernd Hamann", "Kenneth I. Joy" ]	[]	[]	[]
EuroVis	2,003	Interaction of Light and Tensor Fields	10.2312/VisSym/VisSym03/157-166	We present three new ways of looking at tensor volumes. All three methods are based on the interaction of simulated light and the tensor field. Conceptually, rays are shot from a certain direction into the tensor volume. These rays are influenced by the surrounding tensor field and bent as they traverse through the vol...	false	false	[ "Xiaoqiang Zheng", "Alex Pang" ]	[]	[]	[]
EuroVis	2,003	Interactive Feature Specification for Focus+Context Visualization of Complex Simulation Data	10.2312/VisSym/VisSym03/239-248	Visualization of high-dimensional, large data sets, resulting from computational simulation, is one of the most challenging fields in scientific viualization. When visualization aims at supporting the analysis of such data sets, feature-based approches are very useful to reduce the amount of data which is shown at each...	false	false	[ "Helmut Doleisch", "Martin Gasser", "Helwig Hauser" ]	[]	[]	[]
EuroVis	2,003	ISOSLIDER: A System for Interactive Exploration of Isosurfaces	10.2312/VisSym/VisSym03/259-266	We present ISOSLIDER, a system for interactive exploration of isosurfaces of a scalar field. Our algorithm focuses on fast update of isosurfaces for interactive display as a user makes small changes to the isovalue of the desired surface. We exploit the coherence of this update. Larger changes are supported as well. Th...	false	false	[ "Jatin Chhugani", "Sudhir Vishwanath", "Jonathan D. Cohen 0001", "Subodh Kumar 0001" ]	[]	[]	[]
EuroVis	2,003	Isosurfaces on Optimal Regular Samples	10.2312/VisSym/VisSym03/039-048	Volumetric samples on Cartesian lattices are less efficient than samples on body-centred cubic (BCC) lattices. We show how to construct isosurfaces on BCC lattices using several different algorithms. Since the mesh that arises from BCC lattices involves a large number of cells, we show two alternate methods of reducing...	false	false	[ "Hamish A. Carr", "Thomas Theußl", "Torsten Möller" ]	[]	[]	[]
EuroVis	2,003	MCMR: A Fluid View on Time Dependent Volume Data	10.2312/VisSym/VisSym03/149-156	Mass Conservative Motion Reconstruction is a new method for estimating motion in time dependent volume data. A time dependent vector field representing the movement of the data is computed from a sequence of scalar volume data sets. The principle of mass conservation in a continuum is used during the reconstruction. St...	false	false	[ "Wim C. de Leeuw", "Robert van Liere" ]	[]	[]	[]
EuroVis	2,003	Path Seeds and Flexible Isosurfaces - Using Topology for Exploratory Visualization	10.2312/VisSym/VisSym03/049-058	Morse theory and the Reeb graph give topological summaries of the behaviour of continuous scalar functions. The contour tree augments the Reeb graph for the isosurfaces in a volume to store seed sets, which are starting points for extracting isosurfaces by the continuation method. We replace the minimal seed sets of va...	false	false	[ "Hamish A. Carr", "Jack Snoeyink" ]	[]	[]	[]
EuroVis	2,003	Post-convolved Splatting	10.2312/VisSym/VisSym03/223-230	One of the most expensive operations in volume rendering is the interpolation of samples in volume space. The number of samples, in turn, depends on the resolution of the final image. Hence, viewing the volume at high magnification will incur heavy computation. In this paper, we explore an approach that limits the numb...	false	false	[ "Neophytos Neophytou", "Klaus Mueller 0001" ]	[]	[]	[]
EuroVis	2,003	Rendering Vector Data over Global, Multiresolution 3D Terrain	10.2312/VisSym/VisSym03/213-222	Modern desktop PCs are capable of taking 2D Geographic Information System (GIS) applications into the realm of interactive 3D virtual worlds. In prior work we developed and presented graphics algorithms and data management methods for interactive viewing of a 3D global terrain system for desktop and virtual reality sys...	false	false	[ "Zachary Wartell", "Eunjung Kang", "Tony Wasilewski", "William Ribarsky", "Nickolas Faust" ]	[]	[]	[]
EuroVis	2,003	ShellSplatting: Interactive Rendering of Anisotropic Volumes	10.2312/VisSym/VisSym03/105-112	This work presents an extension of shell rendering that is moreflexible and yields higher quality volume renderings. Shell rendering consists of efficient data-structures and methods to manipulate and render structures with non-precise boundaries in volume data. We have updated these algorithms by creating an implement...	false	false	[ "Charl P. Botha", "Frits H. Post" ]	[]	[]	[]
EuroVis	2,003	Shrouds: Optimal Separating Surfaces for Enumerated Volumes	10.2312/VisSym/VisSym03/075-084	We describe new techniques for computing a smooth triangular mesh surface that surrounds an enumerated volume consisting of a collection of points from a 3D rectilinear grid. The surface has the topology of an isosurface computed by a marching cubes method applied to a field function that has the value one at the point...	false	false	[ "Gregory M. Nielson", "Gary Graf", "Ryan Holmes", "Adam Huang", "Mariano Phielipp" ]	[]	[]	[]
EuroVis	2,003	Smart Hardware-Accelerated Volume Rendering	10.2312/VisSym/VisSym03/231-238	For volume rendering of regular grids the display of view-plane aligned slices has proven to yield both good quality and performance. In this paper we demonstrate how to merge the most important extensions of the original 3D slicing approach, namely the pre-integration technique, volumetric clipping, and advanced light...	false	false	[ "Stefan Röttger", "Stefan Guthe", "Daniel Weiskopf", "Thomas Ertl", "Wolfgang Straßer" ]	[]	[]	[]
EuroVis	2,003	Using Graphs for Fast Error Term Approximation of Time-varying Datasets	10.2312/VisSym/VisSym03/009-018	We present a method for the efficient computation and storage of approximations of error tables used for error estimation of a region between different time steps in time-varying datasets. The error between two time steps is defined as the distance between the data of these time steps. Error tables are used to look up ...	false	false	[ "Christof Nuber", "Eric LaMar", "Valerio Pascucci", "Bernd Hamann", "Kenneth I. Joy" ]	[]	[]	[]
EuroVis	2,003	Vector field visualization using Markov Random Field texture synthesis	10.2312/VisSym/VisSym03/195-202	Vector field visualization aims at generating images in order to convey the information existing in the data. We use Markov Random Field (MRF) texture synthesis methods to generate the visualization from a set of sample textures. MRF texture synthesis methods allow generating images that are locally similar to a given ...	false	false	[ "Francesca Taponecco", "Marc Alexa" ]	[]	[]	[]
EuroVis	2,003	Visual Hierarchical Dimension Reduction for Exploration of High Dimensional Datasets	10.2312/VisSym/VisSym03/019-028	Traditional visualization techniques for multidimensional data sets, such as parallel coordinates, glyphs, and scatterplot matrices, do not scale well to high numbers of dimensions. A common approach to solving this problem is dimensionality reduction. Existing dimensionality reduction techniques usually generate lower...	false	false	[ "Jing Yang 0001", "Matthew O. Ward", "Elke A. Rundensteiner", "Shiping Huang" ]	[]	[]	[]
EuroVis	2,003	Visualizing Spatial Distribution Data Sets	10.2312/VisSym/VisSym03/029-038	In this paper, we define distributions as a new data type and address the challenges of visualizing spatial distribution data sets. Numerous visualization techniques exist today for dealing with scalar data. That is, there is a scalar value at each spatial location, which may also be changing over time. Likewise, techn...	false	false	[ "Alison Luo", "David L. Kao", "Jennifer L. Dungan", "Alex Pang" ]	[]	[]	[]
CHI	2,003	Designing novel interactional workspaces to support face to face consultations	10.1145/642611.642623	This paper describes the design and deployment of a novel interactional workspace, intended to provide more effective support for face-to-face consultations between two parties. We focus on the initial consultations between customer and agent that take place during the development of complex products. Findings from an ...	false	false	[ "Tom Rodden", "Yvonne Rogers", "John Halloran 0001", "Ian Taylor" ]	[]	[]	[]
CHI	2,003	Halo: a technique for visualizing off-screen objects	10.1145/642611.642695	As users pan and zoom, display content can disappear into off-screen space, particularly on small-screen devices. The clipping of locations, such as relevant places on a map, can make spatial cognition tasks harder. Halo is a visualization technique that supports spatial cognition by showing users the location of off-s...	false	false	[ "Patrick Baudisch", "Ruth Rosenholtz" ]	[]	[]	[]
CHI	2,003	Recommending collaboration with social networks: a comparative evaluation	10.1145/642611.642714	Studies of information seeking and workplace collaboration often find that social relationships are a strong factor in determining who collaborates with whom. Social networks provide one means of visualizing existing and potential interaction in organizational settings. Groupware designers are using social networks to ...	false	false	[ "David W. McDonald" ]	[]	[]	[]
CHI	2,003	Understanding sequence and reply relationships within email conversations: a mixed-model visualization	10.1145/642611.642674	It has been proposed that email clients could be improved if they presented messages grouped into conversations. An email conversation is the tree of related messages that arises from the use of the reply operation. We propose two models of conversation. The first model characterizes a conversation as a chronological s...	false	false	[ "Gina Danielle Venolia", "Carman Neustaedter" ]	[]	[]	[]
Vis	2,002	A case study in selective visualization of unsteady 3D flow	10.1109/VISUAL.2002.1183821	In this case study, we explore techniques for the purpose of visualizing isolated flow structures in time-dependent data. Our primary industrial application is the visualization of the vortex rope, a rotating helical structure which builds up in the draft tube of a water turbine. The vortex rope can be characterized by...	false	false	[ "Dirk Bauer", "Ronald Peikert", "Mie Sato", "Mirjam Sick" ]	[]	[]	[]
Vis	2,002	A case study on automatic camera placement and motion for visualizing historical data	10.1109/VISUAL.2002.1183826	In this paper, we address the problem of automatic camera positioning and automatic camera path generation in the context of historical data visualization. After short description of the given data, we elaborate on the constraints for the positioning of a virtual camera in such a way that not only the projected area is...	false	false	[ "Stanislav L. Stoev", "Wolfgang Straßer" ]	[]	[]	[]
Vis	2,002	A case study on multiresolution visualization of local rainfall from weather radar measurements	10.1109/VISUAL.2002.1183823	Weather radars can measure the backscatter from rain drops in the atmosphere. A complete radar scan provides three-dimensional precipitation information. For the understanding of the underlying atmospheric processes interactive visualization of these data sets is necessary. This is a challenging task due to the size, s...	false	false	[ "Thomas Gerstner", "Dirk Meetschen", "Susanne Crewell", "Michael Griebel", "Clemens Simmer" ]	[]	[]	[]
Vis	2,002	A case study on the applications of a generic library for low-cost polychromatic passive stereo	10.1109/VISUAL.2002.1183829	Active stereo has been used by engineers and industrial designers for several years to enhance the perception of computer generated three-dimensional images. Unfortunately, active stereo requires specialized hardware. Therefore, as ubiquitous computing and teleworking gain importance, using active stereo becomes a prob...	false	false	[ "Simon Stegmaier", "Dirc Rose", "Thomas Ertl" ]	[]	[]	[]
Vis	2,002	A model for the visualization exploration process	10.1109/VISUAL.2002.1183791	The current state of the art in visualization research places strong emphasis on different techniques to derive insight from disparate types of data. However, little work has investigated the visualization process itself. The information content of the visualization process - the results, history, and relationships bet...	false	false	[ "T. J. Jankun-Kelly", "Kwan-Liu Ma", "Michael Gertz 0001" ]	[]	[]	[]
Vis	2,002	A multiphase approach to efficient surface simplification	10.1109/VISUAL.2002.1183765	We present a new multiphase method for efficiently simplifying polygonal surface models of arbitrary size. It operates by combining an initial out-of-core uniform clustering phase with a subsequent in-core iterative edge contraction phase. These two phases are both driven by quadric error metrics, and quadrics are used...	false	false	[ "Michael Garland", "Eric Shaffer" ]	[]	[]	[]
Vis	2,002	A new object-order ray-casting algorithm	10.1109/VISUAL.2002.1183776	Many direct volume rendering algorithms have been proposed during the last decade to render 256/sup 3/ voxels interactively. However a lot of limitations are inherent to all of them, like low-quality images, a small viewport size or a fixed classification. In contrast, interactive high quality algorithms are still a ch...	false	false	[ "Benjamin Mora", "Jean-Pierre Jessel", "René Caubet" ]	[]	[]	[]
Vis	2,002	A radial focus+context visualization for multi-dimensional functions	10.1109/VISUAL.2002.1183806	The analysis of multidimensional functions is important in many engineering disciplines, and poses a major problem as the number of dimensions increases. Previous visualization approaches focus on representing three or fewer dimensions at a time. This paper presents a new focus+context visualization that provides an in...	false	false	[ "Sanjini Jayaraman", "Chris North 0001" ]	[]	[]	[]
Vis	2,002	Approximating normals for marching cubes applied to locally supported isosurfaces	10.1109/VISUAL.2002.1183808	We present some new methods for computing estimates of normal vectors at the vertices of a triangular mesh surface approximation to an isosurface which has been computed by the marching cube algorithm. These estimates are required for the smooth rendering of triangular mesh surfaces. The conventional method of computin...	false	false	[ "Gregory M. Nielson", "Adam Huang", "Steve Sylvester" ]	[]	[]	[]
Vis	2,002	Assisted navigation for large information spaces	10.1109/VISUAL.2002.1183803	This paper presents a new technique for visualizing large, complex collections of data. The size and dimensionality of these datasets make them challenging to display in an effective manner. The images must show the global structure of spatial relationships within the dataset, yet at the same time accurately represent ...	false	false	[ "Brent M. Dennis", "Christopher G. Healey" ]	[]	[]	[]
Vis	2,002	BLIC: Bi-Level Isosurface Compression	10.1109/VISUAL.2002.1183807	In this paper we introduce a new and simple algorithm to compress isosurface data. This is the data extracted by isosurface algorithms from scalar functions defined on volume grids, and used to generate polygon meshes or alternative representations. In this algorithm the mesh connectivity and a substantial proportion o...	false	false	[ "Gabriel Taubin" ]	[]	[]	[]
Vis	2,002	BM3D: motion estimation in time dependent volume data	10.1109/VISUAL.2002.1183804	This paper describes BM3D: a method for the analysis of motion in time dependent volume data. From a sequence of volume data sets a sequence of vector data sets representing the movement of the data is computed. A block matching technique is used for the reconstruction of data movement. The derived vector field can be ...	false	false	[ "Wim C. de Leeuw", "Robert van Liere" ]	[]	[]	[]
Vis	2,002	Bounded-distortion piecewise mesh parameterization	10.1109/VISUAL.2002.1183795	Many computer graphics operations, such as texture mapping, 3D painting, remeshing, mesh compression, and digital geometry processing, require finding a low-distortion parameterization for irregular connectivity triangulations of arbitrary genus 2-manifolds. This paper presents a simple and fast method for computing pa...	false	false	[ "Olga Sorkine-Hornung", "Daniel Cohen-Or", "Rony Goldenthal", "Dani Lischinski" ]	[]	[]	[]
Vis	2,002	Case study on the adaptation of interactive visualization applications to Web-based production for operational mesoscale weather models	10.1109/VISUAL.2002.1183827	Visualization is required for the effective utilization of data from a weather simulation. Appropriate mapping of user goals to the design of pictorial content has been useful in the development of interactive applications with sufficient bandwidth for timely access to the model data. When remote access to the model vi...	false	false	[ "Lloyd Treinish" ]	[]	[]	[]
Vis	2,002	Case study: A look of performance expression	10.1109/VISUAL.2002.1183815	For most of the time, we enjoy and appreciate music performances as they are. Once we try to understand the performance not in subjective terms but in an objective way and share it with other people, visualizing the performance parameters is indispensable. In this paper, a figure for visualizing performance expressions...	false	false	[ "Rumi Hiraga" ]	[]	[]	[]
Vis	2,002	Case study: A virtual environment for genomic data visualization	10.1109/VISUAL.2002.1183818	With the completion of the human genome sequence, and with the proliferation of genome-related annotation data, the need for scalable and more intuitive means for analysis becomes critical, At Variagenics and Small Design Firm, we have addressed this problem with a coherent three-dimensional space in which all data can...	false	false	[ "R. Mark Adams", "Blaze Stancampiano", "Michael McKenna", "David Small" ]	[]	[]	[]
Vis	2,002	Case study: hardware-accelerated selective LIC volume rendering	10.1109/VISUAL.2002.1183811	Line Integral Convolution (LIC) is a promising method for visualizing 2D dense flow fields. Direct extensions of the LIC method to 3D have not been considered very effective, because optical integration in viewing directions tends to spoil the coherent structures along 3D local streamlines. In our previous reports, we ...	false	false	[ "Yasuko Suzuki", "Issei Fujishiro", "Li Chen", "Hiroko Nakamura" ]	[]	[]	[]
Vis	2,002	Case study: Interactive rendering of adaptive mesh refinement data	10.1109/VISUAL.2002.1183820	Adaptive mesh refinement (AMR) is a popular computational simulation technique used in various scientific and engineering fields. Although AMR data is organized in a hierarchical multi-resolution data structure, the traditional volume visualization algorithms such as ray-casting and splatting cannot handle the form wit...	false	false	[ "Sanghun Park", "Chandrajit L. Bajaj", "Vinay Siddavanahalli" ]	[]	[]	[]
Vis	2,002	Case study: Interactive visualization for Internet security	10.1109/VISUAL.2002.1183816	Internet connectivity is defined by a set of routing protocols which let the routers that comprise the Internet backbone choose the best route for a packet to reach its destination. One way to improve the security and performance of Internet is to routinely examine the routing data. In this case study, we show how inte...	false	false	[ "Soon Tee Teoh", "Kwan-Liu Ma", "Shyhtsun Felix Wu", "Xiaoliang Zhao" ]	[]	[]	[]
Vis	2,002	Case study: the "Office of Real Soon Now" for visualization	10.1109/VISUAL.2002.1183830	As part of a larger effort exploring alternative display systems, Lawrence Livermore National Laboratory has installed systems in two offices that extend and update the previously described "Office of Real Soon Now" project to improve the value for visualization tasks. These new systems use higher resolution projectors...	false	false	[ "Samuel P. Uselton" ]	[]	[]	[]
Vis	2,002	Case study: Visual debugging of finite element codes	10.1109/VISUAL.2002.1183819	We present an innovative application developed at Sandia National Laboratories for visual debugging of unstructured finite element physics codes. Our tool automatically locates anomalous regions, such as inverted elements or nodes whose variable values lie outside a prescribed range, then extracts mesh subsets around t...	false	false	[ "Patricia Crossno", "David H. Rogers 0001", "Christopher J. Garasi" ]	[]	[]	[]
Vis	2,002	Case study: Visualization and analysis of high Rayleigh number - 3D convection in the Earth's mantle	10.1109/VISUAL.2002.1183813	Data sets from large-scale simulations (up to 501/sup 3/ grid points) of mantle convection are analyzed with volume rendering of the temperature field and a new critical point analysis of the velocity field. As the Rayleigh number Ra is increased the thermal field develops increasingly thin plume-like structures along ...	false	false	[ "Gordon Erlebacher", "David A. Yuen", "Fabien Dubuffet" ]	[]	[]	[]
Vis	2,002	Case study: Visualizing ocean flow vertical motions using Lagrangian-Eulerian time surfaces	10.1109/VISUAL.2002.1183822	Ocean model simulations commonly assume the ocean is hydrostatic, resulting in near zero vertical motion. The vertical motion found is typically associated with the variations of the thermocline depth over time, which are mainly a result of the development and movement of ocean fronts, eddies, and internal waves. A new...	false	false	[ "Josh Grant", "Gordon Erlebacher", "James F. O'Brien" ]	[]	[]	[]
Vis	2,002	Christmas tree case study: computed tomography as a tool for mastering complex real world objects with applications in computer graphics	10.1109/VISUAL.2002.1183812	We report on using computed tomography (CT) as a model acquisition tool for complex objects in computer graphics. Unlike other modeling and scanning techniques the complexity of the object is irrelevant in CT, which naturally enables to model objects with, for example, concavities, holes, twists or fine surface details...	false	false	[ "Armin Kanitsar", "Thomas Theußl", "Lukas Mroz", "Milos Srámek", "Anna Vilanova", "Balázs Csébfalvi", "Jirí Hladuvka", "Dominik Fleischmann", "Michael Knapp", "Rainer Wegenkittl", "Petr Felkel", "Stefan Röttger", "Stefan Guthe", "Werner Purgathofer", "M. Eduard Gröller" ]	[]	[]	[]
Vis	2,002	Comparative evaluation of visualization and experimental results using image comparison metrics	10.1109/VISUAL.2002.1183790	Comparative evaluation of visualization and experimental results is a critical step in computational steering. In this paper, we present a study of image comparison metrics for quantifying the magnitude of difference between visualization of a computer simulation and a photographic image captured from an experiment. We...	false	false	[ "Hualin Zhou", "Min Chen 0001", "Michael F. Webster" ]	[]	[]	[]
Vis	2,002	Compressing polygon mesh geometry with parallelogram prediction	10.1109/VISUAL.2002.1183768	We present a generalization of the geometry coder by Touma and Gotsman (1998) to polygon meshes. We let the polygon information dictate where to apply the parallelogram rule that they use to predict vertex positions. Since polygons tend to be fairly planar and fairly convex, it is beneficial to make predictions within ...	false	false	[ "Martin Isenburg", "Pierre Alliez" ]	[]	[]	[]
Vis	2,002	Computing singularities of 3D vector fields with geometric algebra	10.1109/VISUAL.2002.1183786	Critical points of a vector field are key to their characterization. Their positions as well as their indexes are crucial for understanding vector fields. Considerable work exists in 2D, but less is available for 3D or higher dimensions. Geometric algebra is a derivative of Clifford algebra that not only enables a succ...	false	false	[ "Stephen Mann", "Alyn P. Rockwood" ]	[]	[]	[]
Vis	2,002	CPR - curved planar reformation	10.1109/VISUAL.2002.1183754	Visualization of tubular structures such as blood vessels is an important topic in medical imaging. One way to display tubular structures for diagnostic purposes is to generate longitudinal cross-sections in order to show their lumen, wall, and surrounding tissue in a curved plane. This process is called curved planar ...	false	false	[ "Armin Kanitsar", "Dominik Fleischmann", "Rainer Wegenkittl", "Petr Felkel", "M. Eduard Gröller" ]	[]	[]	[]
Vis	2,002	Direct surface extraction from 3D freehand ultrasound images	10.1109/VISUAL.2002.1183755	This paper presents a new technique for the extraction of surfaces from 3D ultrasound data. Surface extraction from ultrasound data is challenging for a number of reasons including noise and artifacts in the images and nonuniform data sampling. A method is proposed to fit an approximating radial basis function to the g...	false	false	[ "Youwei Zhang", "Robert Rohling", "Dinesh K. Pai" ]	[]	[]	[]
Vis	2,002	Efficient compression and rendering of multi-resolution meshes	10.1109/VISUAL.2002.1183794	We present a method to code the multiresolution structure of a 3D triangle mesh in a manner that allows progressive decoding and efficient rendering at a client machine. The code is based on a special ordering of the mesh vertices which has good locality and continuity properties, inducing a natural multiresolution str...	false	false	[ "Zachi Karni", "Alexander Bogomjakov", "Craig Gotsman" ]	[]	[]	[]
Vis	2,002	Efficient computation of the topology of level sets	10.1109/VISUAL.2002.1183774	This paper introduces two efficient algorithms that compute the Contour Tree of a 3D scalar field /spl Fscr/ and its augmented version with the Betti numbers of each isosurface. The Contour Tree is a fundamental data structure in scientific visualization that is used to preprocess the domain mesh to allow optimal compu...	false	false	[ "Valerio Pascucci", "Kree Cole-McLaughlin" ]	[ "TT" ]	[]	[]
Vis	2,002	Efficient simplification of point-sampled surfaces	10.1109/VISUAL.2002.1183771	We introduce, analyze and quantitatively compare a number of surface simplification methods for point-sampled geometry. We have implemented incremental and hierarchical clustering, iterative simplification, and particle simulation algorithms to create approximations of point-based models with lower sampling density. Al...	false	false	[ "Mark Pauly", "Markus H. Gross", "Leif Kobbelt" ]	[]	[]	[]
Vis	2,002	Evaluation of a multimodal interface for 3D terrain visualization	10.1109/VISUAL.2002.1183802	Novel speech and/or gesture interfaces are candidates for use in future mobile or ubiquitous applications. This paper describes an evaluation of various interfaces for visual navigation of a whole Earth 3D terrain model. A mouse driven interface, a speech interface, a gesture interface, and a multimodal speech and gest...	false	false	[ "David M. Krum", "Olugbenga Omoteso", "William Ribarsky", "Thad Starner", "Larry F. Hodges" ]	[]	[]	[]
Vis	2,002	Exploring scalar fields using critical isovalues	10.1109/VISUAL.2002.1183772	Isosurfaces are commonly used to visualize scalar fields. Critical isovalues indicate isosurface topology changes: the creation of new surface components, merging of surface components or the formation of holes in a surface component. Therefore, they highlight interesting isosurface behavior and are helpful in explorat...	false	false	[ "Gunther H. Weber", "Gerik Scheuermann", "Hans Hagen", "Bernd Hamann" ]	[]	[]	[]
Vis	2,002	Exploring surface characteristics with interactive Gaussian images (a case study)	10.1109/VISUAL.2002.1183828	The Gauss map projects surface normals to a unit sphere, providing a powerful visualization of the geometry of a graphical object. it can be used to predict visual events caused by changes in lighting, shading, and camera control. We present an interactive technique for portraying the Gauss map of polygonal models, map...	false	false	[ "Bradley C. Lowekamp", "Penny Rheingans", "Terry S. Yoo" ]	[]	[]	[]
Vis	2,002	Face-based luminance matching for perceptual colormap generation	10.1109/VISUAL.2002.1183788	Most systems used for creating and displaying colormap-based visualizations are not photometrically calibrated. That is, the relationship between RGB input levels and perceived luminance is usually not known, due to variations in the monitor, hardware configuration, and the viewing environment. However, the luminance c...	false	false	[ "Gordon L. Kindlmann", "Erik Reinhard", "Sarah H. Creem-Regehr" ]	[]	[]	[]
Vis	2,002	Fast and reliable space leaping for interactive volume rendering	10.1109/VISUAL.2002.1183775	We present a fast and reliable space-leaping scheme to accelerate ray casting during interactive navigation in a complex volumetric scene, where we combine innovative space-leaping techniques in a number of ways. First, we derive most of the pixel depths at the current frame by exploiting the temporal coherence during ...	false	false	[ "Ming Wan", "Aamir Sadiq", "Arie E. Kaufman" ]	[]	[]	[]
Vis	2,002	Fast view-dependent level-of-detail rendering using cached geometry	10.1109/VISUAL.2002.1183783	Level-of-detail rendering is essential for rendering very large, detailed worlds in real-time. Unfortunately, level-of-detail computations can be expensive, creating a bottleneck at the CPU. This paper presents the CABTT algorithm, an extension to existing binary-triangle-tree-based level-of-detail algorithms. Instead ...	false	false	[ "Joshua Levenberg" ]	[]	[]	[]
Vis	2,002	Fast visualization of plane-like structures in voxel data	10.1109/VISUAL.2002.1183753	We present a robust, noise-resistant criterion characterizing plane-like skeletons in binary voxel objects. It is based on a distance map and the geodesic distance along the object's boundary. A parameter allows us to control the noise sensitivity. If needed, homotopy with the original object might be reconstructed in ...	false	false	[ "Steffen Prohaska", "Hans-Christian Hege" ]	[]	[]	[]
Vis	2,002	GeneVis: visualization tools for genetic regulatory network dynamics	10.1109/VISUAL.2002.1183781	GeneVis provides a visual environment for exploring the dynamics of genetic regulatory networks. At present time, genetic regulation is the focus of intensive research worldwide, and computational aids are being called for to help in the research of factors that are difficult to observe directly. GeneVis provides a par...	false	false	[ "Charles A. H. Baker", "Sheelagh Carpendale", "Przemyslaw Prusinkiewicz", "Michael G. Surette" ]	[]	[]	[]
Vis	2,002	Geometric surface smoothing via anisotropic diffusion of normals	10.1109/VISUAL.2002.1183766	This paper introduces a method for smoothing complex, noisy surfaces, while preserving (and enhancing) sharp, geometric features. It has two main advantages over previous approaches to feature preserving surface smoothing. First is the use of level set surface models, which allows us to process very complex shapes of a...	false	false	[ "Tolga Tasdizen", "Ross T. Whitaker", "Paul Burchard", "Stanley J. Osher" ]	[]	[]	[]
Vis	2,002	Geometric verification of swirling features in flow fields	10.1109/VISUAL.2002.1183789	In this paper, we present a verification algorithm for swirling features in flow fields, based on the geometry of streamlines. The features of interest in this case are vortices. Without a formal definition, existing detection algorithms lack the ability to accurately identify these features, and the current method for...	false	false	[ "Ming Jiang 0005", "Raghu Machiraju", "David S. Thompson" ]	[]	[]	[]
Vis	2,002	Horizon occlusion culling for real-time rendering of hierarchical terrains	10.1109/VISUAL.2002.1183801	We present a technique to perform occlusion culling for hierarchical terrains at run-time. The algorithm is simple to implement and requires minimal pre-processing and additional storage, yet leads to 2-4 times improvement in framerate for views with high degrees of occlusion. Our method is based on the well-known occl...	false	false	[ "Brandon Lloyd", "Parris K. Egbert" ]	[]	[]	[]
Vis	2,002	Immersive volume visualization of seismic simulations: A case study of techniques invented and lessons learned	10.1109/VISUAL.2002.1183814	This paper is a documentation of techniques invented, results obtained and lessons learned while creating visualization algorithms to render outputs of large-scale seismic simulations. The objective is the development of techniques for a collaborative simulation and visualization shared between structural engineers, se...	false	false	[ "Prashant Chopra", "Jörg Meyer 0003", "Antonio Fernandez" ]	[]	[]	[]
Vis	2,002	Integration of measurement tools in medical 3d visualizations	10.1109/VISUAL.2002.1183752	We discuss 3d interaction techniques for the quantitative analysis of spatial relations in medical visualizations. We describe the design and implementation of measurement tools to measure distances, angles and volumes in 3d visualizations. The visualization of measurement tools as recognizable 3d objects and a 3d inte...	false	false	[ "Bernhard Preim", "Christian Tietjen", "Wolf Spindler", "Heinz-Otto Peitgen" ]	[]	[]	[]
Vis	2,002	Interactive rendering of large volume data sets	10.1109/VISUAL.2002.1183757	We present a new algorithm for rendering very large volume data sets at interactive frame rates on standard PC hardware. The algorithm accepts scalar data sampled on a regular grid as input. The input data is converted into a compressed hierarchical wavelet representation in a preprocessing step. During rendering, the ...	false	false	[ "Stefan Guthe", "Michael Wand 0001", "Julius Gonser", "Wolfgang Straßer" ]	[]	[]	[]
Vis	2,002	Interactive spectral volume rendering	10.1109/VISUAL.2002.1183763	We describe a method for volume rendering using a spectral representation of colour instead of the traditional RGB model. It is shown how to use this framework for a novel exploration of datasets through enhanced transfer function design. Furthermore, our framework is extended to allow real-time re-lighting of the scen...	false	false	[ "Steven Bergner", "Torsten Möller", "Mark S. Drew", "Graham D. Finlayson" ]	[]	[]	[]
Vis	2,002	Interactive translucent volume rendering and procedural modeling	10.1109/VISUAL.2002.1183764	Direct volume rendering is a commonly used technique in visualization applications. Many of these applications require sophisticated shading models to capture subtle lighting effects and characteristics of volumetric data and materials. Many common objects and natural phenomena exhibit visual quality that cannot be cap...	false	false	[ "Joe Michael Kniss", "Simon Premoze", "Charles D. Hansen", "David S. Ebert" ]	[]	[]	[]
Vis	2,002	Interactive view-dependent rendering of large isosurfaces	10.1109/VISUAL.2002.1183810	We present an algorithm for interactively extracting and rendering isosurfaces of large volume datasets in a view-dependent fashion. A recursive tetrahedral mesh refinement scheme, based on longest edge bisection, is used to hierarchically decompose the data into a multiresolution structure. This data structure allows ...	false	false	[ "Benjamin F. Gregorski", "Mark A. Duchaineau", "Peter Lindstrom 0001", "Valerio Pascucci", "Kenneth I. Joy" ]	[]	[]	[]
Vis	2,002	Interactive visualization of complex plant ecosystems	10.1109/VISUAL.2002.1183778	We present a method for interactive rendering of large outdoor scenes. Complex polygonal plant models and whole plant populations are represented by relatively small sets of point and line primitives. This enables us to show landscapes faithfully using only a limited percentage of primitives. In addition, a hierarchica...	false	false	[ "Oliver Deussen", "Carsten Colditz", "Marc Stamminger", "George Drettakis" ]	[]	[]	[]
Vis	2,002	Isometric embedding by surface reconstruction from distances	10.1109/VISUAL.2002.1183782	To display the intuitive meaning of an abstract metric it is helpful to look on an embedded surface with the same inner geometry as the given metric. The resulting partial differential equations have no standard solution. Only for some special cases satisfactory methods are known. I present a new algorithmic approach w...	false	false	[ "Ingrid Hotz" ]	[]	[]	[]
Vis	2,002	Kinetic visualization: a technique for illustrating 3D shape and structure	10.1109/VISUAL.2002.1183805	Motion provides strong visual cues for the perception of shape and depth, as demonstrated by cognitive scientists and visual artists. This paper presents a novel visualization technique-kinetic visualization -that uses particle systems to add supplemental motion cues which can aid in the perception of shape and spatial...	false	false	[ "Eric B. Lum", "Aleksander Stompel", "Kwan-Liu Ma" ]	[]	[]	[]
Vis	2,002	Level set segmentation from multiple non-uniform volume datasets	10.1109/VISUAL.2002.1183773	Typically 3-D MR and CT scans have a relatively high resolution in the scanning X-Y plane, but much lower resolution in the axial Z direction. This non-uniform sampling of an object can miss small or thin structures. One way to address this problem is to scan the same object from multiple directions. In this paper we d...	false	false	[ "Ken Museth", "David E. Breen", "Leonid Zhukov", "Ross T. Whitaker" ]	[]	[]	[]
Vis	2,002	Maximum entropy light source placement	10.1109/VISUAL.2002.1183785	Finding the "best" viewing parameters for a scene is a difficult but very important problem. Fully automatic procedures seem to be impossible as the notion of "best" strongly depends on human judgment as well as on the application. In this paper a solution to the sub-problem of placing light sources for given camera pa...	false	false	[ "Stefan Gumhold" ]	[]	[]	[]
Vis	2,002	NASA's great zooms: a case study	10.1109/VISUAL.2002.1183825	This paper examines a series of NASA outreach visualizations created using several layers of remote sensing satellite data ranging from 4-kilometers per pixel to I-meter per pixel. The viewer is taken on a seamless, cloud free journey from a global view of the Earth down to ground level where buildings, streets, and ca...	false	false	[ "Gregory W. Shirah", "Horace Mitchell" ]	[]	[]	[]
Vis	2,002	Non-photorealistic volume rendering using stippling techniques	10.1109/VISUAL.2002.1183777	Simulating hand-drawn illustration techniques can succinctly express information in a manner that is communicative and informative. We present a framework for an interactive direct volume illustration system that simulates traditional stipple drawing. By combining the principles of artistic and scientific illustration,...	false	false	[ "Aidong Lu", "Christopher J. Morris 0001", "David S. Ebert", "Penny Rheingans", "Charles D. Hansen" ]	[ "BP" ]	[]	[]
Vis	2,002	Optimized view-dependent rendering for large polygonal datasets	10.1109/VISUAL.2002.1183760	In this paper we are presenting a novel approach for rendering large datasets in a view-dependent manner. In a typical view-dependent rendering framework, an appropriate level of detail is selected and sent to the graphics hardware for rendering at each frame. In our approach, we have successfully managed to speed up t...	false	false	[ "Jihad El-Sana", "Eitan Bachmant" ]	[]	[]	[]
Vis	2,002	Oriented tensor reconstruction: tracing neural pathways from diffusion tensor MRI	10.1109/VISUAL.2002.1183799	In this paper we develop a new technique for tracing anatomical fibers from 3D tensor fields. The technique extracts salient tensor features using a local regularization technique that allows the algorithm to cross noisy regions and bridge gaps in the data. We applied the method to human brain DT-MRI data and recovered...	false	false	[ "Leonid Zhukov", "Alan H. Barr" ]	[]	[]	[]

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