Browsing VisSym03: Joint Eurographics - IEEE TCVG Symposium on Visualization by Issue Date
Now showing items 1-20 of 30
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Accelerated Force Computation for Physics-Based Information Visualization
(The Eurographics Association, 2003)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 ... -
Detecting Critical Regions in Scalar Fields
(The Eurographics Association, 2003)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 ... -
Smart Hardware-Accelerated Volume Rendering
(The Eurographics Association, 2003)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 ... -
ShellSplatting: Interactive Rendering of Anisotropic Volumes
(The Eurographics Association, 2003)This work presents an extension of shell rendering that is more flexible and yields higher quality volume renderings. Shell rendering consists of efficient data-structures and methods to manipulate and render structures ... -
A Robust Level-Set Algorithm for Centerline Extraction
(The Eurographics Association, 2003)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 ... -
Path Seeds and Flexible Isosurfaces Using Topology for Exploratory Visualization
(The Eurographics Association, 2003)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 ... -
Rendering Vector Data over Global, Multi-resolution 3D Terrain
(The Eurographics Association, 2003)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 ... -
Case Study: Cellar Scaffold Extraction Using Crest Point for Volume Rendering
(The Eurographics Association, 2003)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. ... -
MCMR: A Fluid View on Time Dependent Volume Data
(The Eurographics Association, 2003)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 ... -
Case Study: Comparing Two Methods for Filtering External Motion in 4D Confocal Microscopy Data
(The Eurographics Association, 2003)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. ... -
Interactive Feature Specification for Focus+Context Visualization of Complex Simulation Data
(The Eurographics Association, 2003)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 ... -
Contouring Curved Quadratic Elements
(The Eurographics Association, 2003)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 ... -
Detection of constrictions on closed polyhedral surfaces
(The Eurographics Association, 2003)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 ... -
Hierarchical Isosurface Segmentation Based on Discrete Curvature
(The Eurographics Association, 2003)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 ... -
Analysis of the HDAF for Interpolation and Noise Suppression in Volume Rendering
(The Eurographics Association, 2003)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 ... -
Interaction of Light and Tensor Fields
(The Eurographics Association, 2003)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. ... -
Post-Convolved Splatting
(The Eurographics Association, 2003)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 ... -
Hardware-assisted View-dependent Isosurface Extraction using Spherical Partition
(The Eurographics Association, 2003)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, ... -
Vector Field Visualization using Markov Random Field Texture Synthesis
(The Eurographics Association, 2003)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 ... -
Using Graphs for Fast Error Term Approximation of Time-varying Datasets
(The Eurographics Association, 2003)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 ...