Computer Graphics and Visualization › Publications

2012

Extended Serious Games Multidimensional Interoperability Framework (SG-MIF)
Ioana Stanescu, Antoniu Stefan, Milos Kravcik, Theo Lim, and Rafael Bidarra
Interoperability strategies for serious games development
In Proceedings of eLSE 2012 - 8th International Conference on eLearning and Software for Education, 2012
pdf more
Spatial querying through sphere selection. A distance query reveals the literature and anatomical landmarks associated to the structures within the selection sphere.
Noeska Natasja Smit, Anne C. Kraima, Daniel Jansma, Marco C. Deruiter, and Charl P. Botha
A Unified Representation for the Model-based Visualization of Heterogeneous Anatomy Data
In Proceedings of EuroVis (Short Papers), 2012
pdf more
From left to right: Starting from an original depth map a pixel disparity map is computed and then a disparity pyramid is built. After multi-resolution disparity processing, the dynamic range of disparity is adjusted and the resulting enhanced disparity map is produced. The map is then used to create enhanced stereo image.
Piotr Didyk, Tobias Ritschel, Elmar Eisemann, Karol Myszkowski, and Hans-Peter Seidel
Apparent stereo: the Cornsweet illusion can enhance perceived depth
In Proceedings of Human Vision and Electronic Imaging, 2012
pdf more
Representing semantics as the centralized object representation communicating with all game components.
Jassin Kessing, Tim Tutenel, and Rafael Bidarra
Designing Semantic Game Worlds
In Proceedings of PCG Workshop, 2012
pdf more
Result of fiber tracking using three seedpoints based on the activity maps
C. Tax, R. Duits, B.M. ter Haar Romeny, and Anna Vilanova
Tractography of the optic radiation for vision sparing epilepsy surgery
In Proceedings of International Conference on Information and Automation, 2012
pdf more
A temporal maximum speed volume (tMSV) takes the maximum blood-flow speed for each voxel throughout the cardiac cycle. An initial surface can be extracted from this static representation of the blood-flow regions. A standard marching cubes algorithm is employed to generate the iso-surface
R.F.P. van Pelt, Thuc Nghi Nguyen, B.M. ter Haar Romeny, and Anna Vilanova
Automated segmentation of blood-flow regions in large thoracic arteries using 3D-cine PC-MRI measurements
International Journal of Computer Assisted Radiology and Surgery, 2012
pdf more
3D model “Bottle” and “Balloon vehicle”
Xin Zhang, Tim Tutenel, Rong Mo, Rafael Bidarra, and Willem F. Bronsvoort
A Method for Specifying Semantics of Large Sets of 3D Models
In Proceedings of GRAPP, 2012
pdf more
Stunt arenas generated for players modeled as high (a) and medium (b) Sunday Drivers.
Ricardo Lopes, Tim Tutenel, and Rafael Bidarra
Using gameplay semantics to procedurally generate player-matching game worlds
In Proceedings of PCG Workshop, 2012
pdf more
An example of our randomly generated search space, consisting of interconnected “chambers.” The high-level graph is represented in blue.
Sandy Brand and Rafael Bidarra
Multi-core scalable and efficient pathfinding with Parallel Ripple Search
Comput Animat Virtual Worlds, 2012
pdf more
Overview of the extraction approach: Based on the flow grid and the aneurysm ostium we seed streamlines at the ostium into the aneurysm. We identify several local line properties on the streamlines to compute a quality scalar field on the ostium. Given this scalar field we extract a seeding curve on the ostium, which is used to construct the boundary contour of the inflow jet. A second scalar field is computed on the aneurysm surface to indicate the impingement zone. Finally, we visualize both information expressively.
R. Gasteiger, D. Lehmann, R.F.P. van Pelt, G. Janiga, O. Beuing, et al.
Automatic Detection and Visualization of Qualitative Hemodynamic Characteristics in Cerebral Aneurysms
IEEE Transactions on Visualization and Computer Graphics, 2012
pdf more
Fiber-tracking results for the corpus callosum, using stream-line (a) or geodesics via the raytracing method (b).
N. Sepasian, J.H.M. ten Thije Boonkkamp, B.M. ter Haar Romeny, and Anna Vilanova
Multivalued Geodesic Ray-Tracing for Computing Brain Connections Using Diffusion Tensor Imaging
SIAM J Imaging Sci, 2012
pdf more
Potential blockers (orange) for rays going from s to T are found in the shaft-like shape (green).
Lionel Baboud, Elmar Eisemann, and Hans-Peter Seidel
Precomputed Safety Shapes for Efficient and Accurate Height-Field Rendering
IEEE Transactions on Visualization and Computer Graphics, 2012
pdf more
Visualization for antomical exploration of the rectum (green) and levator ani muscle (red) of a segmentation label volume based on the Visible Korean Human cryosectional dataset. The declarative query in this case is “Show me the rectum and the nearby surrounding musculature”.
Noeska Natasja Smit, Thomas Kroes, Anne C. Kraima, Daniel Jansma, Marco C. Deruiter, et al.
Towards Declarative Medical Visualization
In Proceedings of Eurographics Workshop on Visual Computing for Biology and Medicine Poster, 2012
pdf more
Heatmaps for Case 2. The left map uses the same color scheme as the heatmaps in Figure 5; in the right map, blue traces are males and pink traces are females.
Nick Kraayenbrink, Jassin Kessing, Tim Tutenel, Gerwin de Haan, Fernando Marson, et al.
Semantic Crowds: Reusable Population for Virtual Worlds
In Proceedings of VS-GAMES, 2012
pdf more
The preprocessing steps. Left Definition of the contours, Middle Definition of scar (gray zone (in yellow) and core zone (in red)) and Right The composition of the mesh based on the contours in 3D. The last described preprocessing step of indicating the position of the origin of the left main coronary artery is not included in this figure
Corine Godeschalk-Slagboom, Rob van der Geest, Katja Zeppenfeld, and Charl P. Botha
Cardiac MRI visualization for ventricular tachycardia ablation
International Journal of Computer Assisted Radiology and Surgery, 2012
pdf more
Standard 4,0962 shadow map with perspective warping, rendering at 64 FPS (left). QVSM with a maximum refinement level of 32 × 32 and 1,0242 tiles, rendering at 32 FPS (right). Adaptive subdivision effectively removes aliasing in cases that are difficult for reparametrization and global partitioning methods.
Elmar Eisemann, Ulf Assarsson, Michael Schwarz, Michal Valient, and Michael Wimmer
Efficient real-time shadows
In Proceedings of SIGGRAPH Courses, 2012
pdf more
Ray-traced colored models: bottle (left), vase (middle), coffee mug (left top), and the same model registered in inverse ordering (left bottom)
Ricardo Marroquim, Gustavo Pfeiffer, Felipe de Carvalho, and Antonio Oliveira
Texturing 3D models from sequential photos
Vis Comput, 2012
pdf more
Real-time rendering applications exhibit a considerable amount of spatio-temporal coherence. This is true for camera motion, as in the Parthenon sequence (left), as well as animated scenes such as the Heroine (middle) and Ninja (right) sequences. Diagrams to the right of each rendering show disoccluded points in red, in contrast to points that were visible in the previous frame, which are shown in green (i.e. green points are available for reuse). [Images courtesy of Advanced Micro Devices, Inc., Sunnyvale, California, USA]
Daniel Scherzer, Lei Yang, Oliver Mattausch, Diego Nehab, Pedro V. Sander, et al.
Temporal Coherence Methods in Real-Time Rendering
Computer Graphics Forum, 2012
pdf more
FU maps for multichannel EEG coherence visualization. Brain responses were collected from three subjects using an EEG cap with 119 scalp electrodes. During a so-called P300 experiment, each participant was instructed to count target tones of 2000Hz (probability 0.15), alternated with standard tones of 1000Hz (probability 0.85) which were to be ignored. After the experiment, the participant had to report the number of perceived target tones. Shown are FU maps for target stimuli data, with FUs larger than 5 cells, for the 1-3Hz EEG frequency band (top row) and for 13-20Hz (bottom row), for three datasets.
Hanspeter Pfister, Verena Kaynig, Charl P. Botha, Stefan Bruckner, V. J. Dercksen, et al.
Visualization in Connectomics
CoRR, 2012
pdf more
A 3D model of the relevant vascular anatomy is surrounded by map views that display scalar flow features of five sides (features at the left, right, bottom, and up side are shown at the corresponding ring portions). Scalar features of the backside are shown at the most right display. The lines pointing from the map portions to the 3D view indicate correspondences, where scalar features are shown in both views. If the user drags a point, representing an interesting feature from a map view to the center, the anatomical model is rotated to make that region visible. All map views change accordingly.
Anna Vilanova, Bernhard Preim, R.F.P. van Pelt, R. Gasteiger, M. Neugebauer, and Thomas Wischgoll
Visual Exploration of Simulated and Measured Blood Flow
CoRR, 2012
pdf more