Feature tracking in VR for cumulus cloud life-cycle studies
Eric J. Griffith,Frits H. Post,Michal Koutek,Thijs Heus,Harm J. J. Jonker +4 more
- pp 121-128
Reads0
Chats0
TLDR
This paper presents an approach that uses a combination of off-line preprocessing and interactive visualization in VR to simplify and speed up the identification of interesting features for further study.Abstract:
Feature tracking in large data sets is traditionally an off-line, batch processing operation while virtual reality typically focuses on highly interactive tasks and applications. This paper presents an approach that uses a combination of off-line preprocessing and interactive visualization in VR to simplify and speed up the identification of interesting features for further study. We couch the discussion in terms of our collaborative research on using virtual reality for cumulus cloud life-cycle studies, where selecting suitable clouds for study is simple for the skilled observer but difficult to formalize. The preprocessing involves identifying individual clouds within the data set through a 4D connected components algorithm, and then saving isosurface, bounding box, and volume information. This information is then interactively visualized in our VR Cloud Explorer with various tools and information displays to identify the most interesting clouds. In a small pilot study, reasonable performance, both in the preprocessing phase and the visualization phase, has been measured.read more
Citations
More filters
Journal ArticleDOI
Visualization in Meteorology—A Survey of Techniques and Tools for Data Analysis Tasks
Marc Rautenhaus,Michael Böttinger,Stephan Siemen,Robert R. Hoffman,Robert M. Kirby,Mahsa Mirzargar,Niklas Röber,Rüdiger Westermann +7 more
TL;DR: An overview of visualization techniques from the fields of display design, 3D visualization, flow dynamics, feature-based visualization, comparative visualization and data fusion, uncertainty and ensemble visualization, interactive visual analysis, efficient rendering, and scalability and reproducibility is presented.
Journal ArticleDOI
A statistical approach to the life cycle analysis of cumulus clouds selected in a virtual reality environment
Thijs Heus,Thijs Heus,Harmen J. J. Jonker,Harry E.A. Van den Akker,Eric J. Griffith,Michal Koutek,Michal Koutek,Frits H. Post +7 more
TL;DR: A new method is developed to investigate the entire life cycle of shallow cumuli in large eddy simulations, and the most dominant feature is the pulsating growth that is present throughout the entire lifetime of the cloud, independent of the case and of the large-scale forcings.
Book ChapterDOI
A neurofuzzy controller for 3D virtual centered navigation in medical images of tubular structures
TL;DR: A virtual mobile robot, equipped with a neuro-fuzzy controller, is trained to navigate inside image datasets of tubular structures, keeping a central position, to identify smooth and continuous central paths which are useful in several medical applications.
Proceedings ArticleDOI
Hybrid interfaces in VEs: intent and interaction
TL;DR: This paper describes a small set of tightly integrated 2D windows developed with the goal of providing increased flexibility in the UI and reducing UI clutter and relates how the effective integration of these two developments eases some of the UI restrictions and produces a more comfortable VR experience.
Journal ArticleDOI
Feature Tracking by Two-Step Optimization
TL;DR: A novel approach for tracking both sparse and space-filling features in time-varying data, which determines the assignment of features between two successive time-steps by solving two graph optimization problems.
References
More filters
Proceedings ArticleDOI
Marching cubes: A high resolution 3D surface construction algorithm
TL;DR: In this paper, a divide-and-conquer approach is used to generate inter-slice connectivity, and then a case table is created to define triangle topology using linear interpolation.
Journal ArticleDOI
General circulation experiments with the primitive equations
TL;DR: In this article, an extended period numerical integration of a baroclinic primitive equation model has been made for the simulation and the study of the dynamics of the atmosphere's general circulation, and the solution corresponding to external gravitational propagation is filtered by requiring the vertically integrated divergence to vanish identically.
Proceedings ArticleDOI
Topology matching for fully automatic similarity estimation of 3D shapes
TL;DR: A novel technique is proposed, called Topology Matching, in which similarity between polyhedral models is quickly, accurately, and automatically calculated by comparing Multiresolutional Reeb Graphs (MRGs), which operates well as a search key for 3D shape data sets.
Proceedings ArticleDOI
Ray tracing volume densities
James T. Kajiya,Brian Von Herzen +1 more
TL;DR: New algorithms to trace objects represented by densities within a volume grid, e.g. clouds, fog, flames, dust, particle systems, suitable for use in computer graphics are presented.
Journal ArticleDOI
A Large Eddy Simulation Intercomparison Study of Shallow Cumulus Convection
A. Pier Siebesma,Christopher S. Bretherton,Andrew Brown,Andreas Chlond,Joan Cuxart,Peter G. Duynkerke,Hongli Jiang,Marat Khairoutdinov,David C. Lewellen,Chin-Hoh Moeng,Enrique Sánchez,Bjorn Stevens,David E. Stevens +12 more
TL;DR: In this paper, an intercomparison study on undisturbed trade wind cumulus convection under steadystate conditions as observed during the Barbados Oceanographic and Meteorological Experiment (BOMEX) with 10 large eddy simulation (LES) models was performed.
Related Papers (5)
Combining fringe projection method of 3D object monitoring with virtual reality environment: concept and initial results
P. Garbat,M. Kujawinska +1 more