7,785 Works

SurviVIS: Visual Analytics for Interactive Survival Analysis

Alberto Corvò, Humberto Simon Garcia Caballero & Michel A. Westenberg
The increasing quantity of data in biomedical informatics is leading towards better patient profiling and personalized medicine. Lab tests, medical images, and clinical data represent extraordinary sources for patient characterization. While retrospective studies focus on finding correlations in this sheer volume of data, potential new biomarkers are difficult to identify. A common approach is to observe patient mortality with respect to different clinical variables in what is called survival analysis. Kaplan-Meier plots, also known as...

Reduced Precision for Hardware Ray Tracing in GPUs

Sean Keely
Eurographics/ ACM SIGGRAPH Symposium on High Performance Graphics

Efficient Stackless Hierarchy Traversal on GPUs with Backtracking in Constant Time

Nikolaus Binder & Alexander Keller
The fastest acceleration schemes for ray tracing rely on traversing a bounding volume hierarchy (BVH) for efficient culling and use backtracking, which in the worst case may expose cost proportional to the depth of the hierarchy in either time or state memory. We show that the next node in such a traversal actually can be determined in constant time and state memory. In fact, our newly proposed parallel software implementation requires only a few modifications...

Vector and Tensor Field Topology Simplification on Irregular Grids

Xavier Tricoche, Gerik Scheuermann, Hans Hagen & Stefan Clauss
Topology-based visualization of planar turbulent flows results in visual clutter due to the presence of numerous features of very small scale. In this paper, we attack this problem with a topology simplification method for vector and tensor fields defined on irregular grids. This is the generalization of previous work dealing with structured grids. The method works for all interpolation schemes.

An Evaluation of the Effects of Hyper-Natural Components of Interaction Fidelity on Locomotion Performance in Virtual Reality

Mahdi Nabioyuni & Doug A. Bowman
Virtual reality (VR) locomotion techniques that approximate real-world walking often have lower performance than fully natural real walking due to moderate interaction fidelity. Other techniques with moderate fidelity, however, are intentionally designed to enhance users' abilities beyond what is possible in the real world. We compared such hyper-natural techniques to their natural counterparts on a wide range of locomotion tasks for a variety of measures. The evaluation also considered two independent components of interaction fidelity:...

Adaptive Brush Stroke Generation for Painterly Rendering

Youngsup Park ChungAng & Kyunghyun Yoon
Eurographics 2004 - Short Presentations

Artifacts Removal for Color Projection on 3D Models using Flash Light

Matteo Dellepiane, Marco Callieri, Massimiliano Corsini, Paolo Cignoni & Roberto Scopigno
VAST: International Symposium on Virtual Reality, Archaeology and Intelligent Cultural Heritage

Phase Space Data-Driven Simulation of Elastic Materials

Carlos Monteagudo, Miguel Lozano, Ignacio García-Fernández & Francisco Martinez-Gil
The use of data driven models in computer animation offers several benefits. We present an analysis of a regression model as a method to simulate cloth. In our approach, we generate data from a simple mass-spring system and we fit a regressor. Then, we assemble more complex mass-spring systems and use the learnt model to simulate them. To validate the approach we perform several tests. We analyze the elastic properties of a single learnt spring,...

Visualizing Transportation Flows with Mode Split using Glyphs

Ignacio Pérez-Messina & Eduardo Graells-Garrido
The increasing trend of using unconventional data in urban planning environments has led to the need for developing systems that can visualize this data. Here we present a visualization for studying commuting flows within a city, with a particular focus on the distribution of mode of transportation usage. Our design, called ModalCell, uses a glyph-based flow map to show a city's flows considering mode split, direction, and distance range. We evaluate ModalCell with a pilot...

Challenges in Appearance Capture and Predictive Modeling of Textile Materials

Carlos Castillo, Carlos Aliaga & Jorge López-Moreno
The appearance of cloth is the result of complex light interactions within the structures present in textile materials, particularly challenging due to their multi-scale nature. In addition to the inherent complexity of cloth rendering, there is a lack of connection between computer graphics techniques and manufacturing processes followed in industry. We discuss existing techniques and pose questions about which are the right paths to follow for a better synergy between CG and textile research, including...

Easy Access to Huge 3D Models ofWorks of Art

M. Callieri, F. Ponchio, P. Cignoni & R. Scopigno
4th Eurographics Italian Chapter Conference

Pressure-based Vortex Extraction in Cardiac 4D PC-MRI Blood Flow Data

Benjamin Köhler, Matthias Grothoff, Matthias Gutberlet & Bernhard Preim
We propose a technique for vortex extraction in cardiac 4D PC-MRI blood flow data that employs an intravascular, relative pressure calculation. The method is easy to implement, runs fully automatically, and requires no user-defined parameters. We qualitatively evaluated 100+ datasets of the aorta, pulmonary artery, or left ventricle from healthy volunteers as well as from patients acquired with different MR scanners. In all cases, the results suffer from significantly less noise than comparable approaches using...

Feature Enhancement using Locally Adaptive Volume Rendering

Stephane Marchesin, Jean-Michel Dischler & Catherine Mongenet
Eurographics/IEEE VGTC Symposium on Volume Graphics

Fire and Gas Detection Mapping using Volumetric Rendering

Cameron Cotterill, Tyrone Davison, Simon J. O'Connor, David Orr, Fred Charles & Wen Tang
The software presented here provides an interactive real-time tool for the simulation of fire and gas detection mapping using volumetric rendering based on the layouts of fire and gas detectors within 3D virtual environments.

Hardware-Accelerated Free-Form Deformation

Clint Chua & Ulrich Neumann
SIGGRAPH/Eurographics Workshop on Graphics Hardware

Temporal Ensemble of Shape Functions

Karla Brkic, Aitor Aldomà, Markus Vincze, Sinisa Segvic & Zoran Kalafatic
Eurographics Workshop on 3D Object Retrieval

Visual Analytics in Process Mining: Classification of Process Mining Techniques

Simone Kriglstein, Margit Pohl, Stefanie Rinderle-Ma & Magdalena Stallinger
The increasing interest from industry and academia has driven the development of process mining techniques over the last years. Since the process mining entails a strong explorative perspective, the combination of process mining and visual analytics methods is a fruitful multidisciplinary solution to enable the exploration and the understanding of large amounts of event log data. In this paper, we propose a first approach how process mining techniques can be categorized with respect to visual...

Retrieval of Gray Patterns Depicted on 3D Models

E. Moscoso Thompson, C. Tortorici, N. Werghi, S. Berretti, S. Velasco-Forero & S. Biasotti
This paper presents the results of the SHREC'18 track: Retrieval of gray patterns depicted on 3D models. The task proposed in the contest challenges the possibility of retrieving surfaces with the same texture pattern of a given query model. This task, which can be seen as a simplified version of many real world applications, requires a characterization of the surfaces based on local features, rather then considering the surface size and/or bending. All runs submitted...

Direct Visuo-Haptic Display System Using a Novel Concept

Monica Bordegoni & Mario Covarrubias
Eurographics Symposium on Virtual Environments, Short Papers and Posters

Take a Stroll in Another World

Zsofia Ruttkay & Erik Orbons
EG Short Papers


Sam E. Ranjbaran & Ron J. Swallow
Eurographics Conference Proceedings

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