20,051 research outputs found
Real-time lattice boltzmann shallow waters method for breaking wave simulations
We present a new approach for the simulation of surfacebased fluids based in a hybrid formulation of Lattice Boltzmann Method for Shallow Waters and particle systems. The modified LBM can handle arbitrary underlying terrain conditions and arbitrary fluid depth. It also introduces a novel method for tracking dry-wet regions and moving boundaries. Dynamic rigid bodies are also included in our simulations using a two-way coupling. Certain features of the simulation that the LBM can not handle because of its heightfield nature, as breaking waves, are detected and automatically turned into splash particles. Here we use a ballistic particle system, but our hybrid method can handle more complex systems as SPH. Both the LBM and particle systems are implemented in CUDA, although dynamic rigid bodies are simulated in CPU. We show the effectiveness of our method with various examples which achieve real-time on consumer-level hardware.Peer ReviewedPostprint (author's final draft
Prop-Based Haptic Interaction with Co-location and Immersion: an Automotive Application
Most research on 3D user interfaces aims at providing only a single sensory
modality. One challenge is to integrate several sensory modalities into a
seamless system while preserving each modality's immersion and performance
factors. This paper concerns manipulation tasks and proposes a visuo-haptic
system integrating immersive visualization, tactile force and tactile feedback
with co-location. An industrial application is presented
Markerless Motion Capture in the Crowd
This work uses crowdsourcing to obtain motion capture data from video
recordings. The data is obtained by information workers who click repeatedly to
indicate body configurations in the frames of a video, resulting in a model of
2D structure over time. We discuss techniques to optimize the tracking task and
strategies for maximizing accuracy and efficiency. We show visualizations of a
variety of motions captured with our pipeline then apply reconstruction
techniques to derive 3D structure.Comment: Presented at Collective Intelligence conference, 2012
(arXiv:1204.2991
- …