Sciweavers

VMV
2001
126views Visualization» more  VMV 2001»
13 years 6 months ago
Accessing Multi-user Virtual Worlds over IP
The construction of photo-realistic virtual worlds is at reach of current computer graphics. Unfortunately, the philosophy currently adopted for the diffusion of virtual worlds ov...
Riccardo Bernardini, Guido M. Cortelazzo
VMV
2001
108views Visualization» more  VMV 2001»
13 years 6 months ago
A Theoretical Comparison of Monte Carlo Radiosity Algorithms
In this paper, we present a theoretical analysis of the error with three basic Monte Carlo radiosity algorithms, based on continuous collision shooting random walks, discrete coll...
Philippe Bekaert, Hans-Peter Seidel
VMV
2001
248views Visualization» more  VMV 2001»
13 years 6 months ago
Using an Extended Hough Transform Combined with a Kalman Filter to Segment Tubular Structures in 3D Medical Images
We present a new approach for the coarse segmentation of tubular structures in 3D image data. Our algorithm, which requires only few initial values and minimal user interaction, c...
Thorsten Behrens, Karl Rohr, H. Siegfried Stiehl
VMV
2001
161views Visualization» more  VMV 2001»
13 years 6 months ago
Efficient Generation of 3-D Models Out of Depth Maps
Depth reconstruction or acquisition with a 3-D camera results in a video sequence where each pixel of a frame is annotated with a depth value. We propose an approach to combine th...
Fabian Ernst, Cornelius W. A. M. van Overveld, Pio...
VMV
2001
108views Visualization» more  VMV 2001»
13 years 6 months ago
Interactive Manipulation of Voxel Volumes with Free-formed Voxel Tools
Manipulation of high-precision voxel volume at interactive speed is still not immediately possible by known algorithms on today's workstation hardware. We propose to decompos...
Jörg Ayasse, Heinrich Müller
VMV
2001
161views Visualization» more  VMV 2001»
13 years 6 months ago
Regularized Quadrature Filters for Local Frequency Estimation: Application to Multimodal Volume Image Registration
Multimodal image registration is a fundamental problem in medical image analysis. In this paper, we propose a novel algorithm to compute the local frequency representations of the...
Jundong Liu
VMV
2008
157views Visualization» more  VMV 2008»
13 years 6 months ago
Flexible GPU-Based Multi-Volume Ray-Casting
Using combinations of different volumetric datasets is becoming more common in scientific applications, especially medical environments such as neurosurgery where multiple imaging...
Ralph Brecheisen, Anna Vilanova Bartrolí, B...
VMV
2008
139views Visualization» more  VMV 2008»
13 years 6 months ago
Lateral Detection
Qing Zhong, Martin Schindler, Christoph Stamm
VMV
2008
120views Visualization» more  VMV 2008»
13 years 6 months ago
Interpolating and Downsampling RGBA Volume Data
For about twenty years the standard color sampling method for RGBA volume data has been the interpolation of opacity-weighted colors. In this work, we discuss the underlying appro...
Martin Kraus, Kai Bürger
VMV
2008
197views Visualization» more  VMV 2008»
13 years 6 months ago
1-2-tree: Semantic Modeling and Editing of Trees
In computer graphics, procedural methods and Lsystems are common approaches to model complex botanical trees. In contrast to previous tree modeling systems, we propose linking rul...
Björn Ganster, Reinhard Klein