7,833 Works

Introducing Topological Attributes for Objective-Based Visualization of Simulated Datasets

Yuriko Takeshima, Shigeo Takahashi, Issei Fujishiro & Gregory M. Nielson
Volume Graphics 2005

Visual Analysis of Glycogen Derived Lactate Absorption in Dense and Sparse Surface Reconstructions of Rodent Brain Structures

Corrado Calì, Marco Agus, Nicholas Gagnon, Markus Hadwiger & Pierre J. Magistretti
Astrocytes are the most abundant type of glial cells of the central nervous system; their involvement in brain functioning, from synaptic to network level, is to date a matter of intense research. A well-established function of astroglial cells, among others, is the metabolic support of neurons. Recently, it has been shown that during tasks like learning and long-term memory formation, synapses sustain their metabolic needs using lactate, a compound that astrocytes can synthesize from glycogen,...

Where'd it go? How Geographic and Force-directed Layouts Affect Network Task Performance

Scott A. Hale, Graham McNeill & Jonathan Bright
When visualizing geospatial network data, it is possible to position nodes according to their geographic locations or to position nodes using standard network layout algorithms that ignore geographic location. Such data is increasingly common in interactive displays of Internet-connected sensor data, but network layouts that ignore geographic location data are rarely employed. We conduct a user experiment to compare the effects of geographic and force-directed network layouts on three common network tasks: locating a node,...

3D virtual facial reconstruction and visualization of ancient Egyptian mummies using spiral CT data

Giuseppe Attardi, Marilina Betro, Maurizio Forte, Roberto Gori, Antonella Guidazzoli, Silvano Imboden & Francesco Mallegni
Eurographics 1999 - Short Presentations

WreckSight: Revealing our Submerged Maritime Heritage

Chris Rowland & John Anderson
VAST: International Symposium on Virtual Reality, Archaeology and Intelligent Cultural Heritage

Scene Segmentation Based on NURBS Surface Fitting Metrics

Giampaolo Pagnutti & Pietro Zanuttigh
This paper proposes a segmentation scheme jointly exploiting color and depth data within a recursive region splitting framework. A set of multi-dimensional vectors is built from color and depth data and the scene is segmented in two parts using normalized cuts spectral clustering. Then a NURBS model is fitted on each of the two parts and various metrics based on the surface fitting results are used to measure the plausibility that each segment represents a...

Morphable model of quadrupeds skeletons for animating 3D animals

Lionel Reveret, Laurent Favreau, Christine Depraz & Marie-Paule Cani
Symposium on Computer Animation

A Mesh-Particle Model for Fluid Animation

Nuria Suárez & Antonio Susín
SIACG 2006: Ibero-American Symposium in Computer Graphics

Polyhedral Visual Hulls for Real-Time Rendering

Wojciech Matusik, Chris Buehler & Leonard McMillan
We present new algorithms for creating and rendering visual hulls in real-time. Unlike voxel or sampled approaches, we compute an exact polyhedral representation for the visual hull directly from the silhouettes. This representation has a number of advantages: 1) it is a view-independent representation, 2) it is well-suited to rendering with graphics hardware, and 3) it can be computed very quickly. We render these visual hulls with a view-dependent texturing strategy, which takes into account...

Edge Collision Detection in Complex Deformable Environments

Thomas Jund, David Cazier & Jean-François Dufourd
Workshop in Virtual Reality Interactions and Physical Simulation "VRIPHYS" (2010)

Robust Iterative Find-Next-Hit Ray Traversal

Ingo Wald, Jefferson Amstutz & Carsten Benthin
We present two different methods for improving the performance and robustness of ray tracing algorithms that require iterating through multiple successive intersections along the same ray. Our methods do so without ever missing intersections, even in cases of co-planar or numerically close surfaces, and without having to rely on a dedicated all-hit traversal kernel. Furthermore, our evaluation shows that, in many cases, our methods consistently outperform existing all-hit kernels.

Real-Time Activity Prediction: A Gaze-Based Approach for Early Recognition of Pen-Based Interaction Tasks

Çagla Çıg & Tevfik Metin Sezgin
Recently there has been a growing interest in sketch recognition technologies for facilitating human-computer interaction. Existing sketch recognition studies mainly focus on recognizing pre-defined symbols and gestures. However, just as there is a need for systems that can automatically recognize symbols and gestures, there is also a pressing need for systems that can automatically recognize pen-based manipulation activities (e.g. dragging, maximizing, minimizing, scrolling). There are two main challenges in classifying manipulation activities. First is the...

Automated Labeling of Ink Stroke Data

Zhen, Jacky (Shunjie) , Rachel Blagojevic & Beryl Plimmer
Eurographics Workshop on Sketch-Based Interfaces and Modeling

Information-Guided Transfer Function Refinement

Shengzhou Luo & John Dingliana
Eurographics 2014 - Short Papers

Spherical Harmonic Gradients for Mid-Range Illumination

Thomas Annen, Jan Kautz, Frédo Durand & Hans-Peter Seidel
Spherical harmonics are often used for compact description of incident radiance in low-frequency but distant lighting environments. For interaction with nearby emitters, computing the incident radiance at the center of an object only is not sufficient. Previous techniques then require expensive sampling of the incident radiance field at many points distributed over the object. Our technique alleviates this costly requirement using a first-order Taylor expansion of the spherical-harmonic lighting coefficients around a point. We propose...

RPI-MATLAB-Simulator: A Tool for Efficient Research and Practical Teaching in Multibody Dynamics

Jedediyah Williams, Ying Lu, Sarah Niebe, Michael Andersen, Kenny Erleben & Jeffrey C. Trinkle
Workshop on Virtual Reality Interaction and Physical Simulation

Scalable Autostereoscopic Display with Temporal Division Method

Tadatoshi Kurogi, Hideaki Nii, Roshan Lalintha Peiris & Kouta Minamizawa
Science-fiction has frequently depicted people directly interacting with life-size autostereoscopic images projected from the walls of buildings in public places. In this paper, we present a large modularized autostereoscopic display. The shape and size can be easily changed by rearranging the number of the multiple display modules. We propose a reconfigurable temporal division multiplexed autostereoscopic display module that can display aerial images. More-over, we show that the temporal division multiplexing method allows the autostereoscopic display...

Multiscale Features for Approximate Alignment of Point-based Surfaces

Xinju Li & Igor Guskov
Eurographics Symposium on Geometry Processing 2005

Interactive Web-based Visualization for Accessibility Mapping of Transportation Networks

Alexander Schoedon, Matthias Trapp, Henning Hollburg & Jürgen Döllner
Accessibility is a fundamental aspect in transportation, routing, and spare-time activity planning concerning traveling in modern cities. In this context, interactive web-based accessibility-map visualization techniques and systems are important tools for provisioning, exploration, analysis, and assessment of multi-modal and location-based travel time data and routing information. To enable their effective application, such interactive visualization techniques demands for flexible mappings with respect to user-adjustable parameters such as maximum travel times, the types of transportation used, or...

An Improved Z-Buffer CSG Rendering Algorithm

Nigel Stewart, Geoff Leach & Sabu John
SIGGRAPH/Eurographics Workshop on Graphics Hardware

Is This Seat Taken? Behavioural Analysis of the Telethrone: A Novel Situated Telepresence Display

John O'Hare, Robert C. A. Bendall, John Rae, Graham Thomas, Bruce Weir & David J. Roberts
We present research with two novel components; a system which may improve current small group telecommunication, and an experiment to test the efficacy. Telethrone projects a remote user onto a chair, bringing them into your space. The chair acts as a situated display which can support multi party head gaze, eye gaze, and body torque such that each observer knows where the projected user is looking. It is simpler to implement and cheaper than current...

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