Bag-of-Particles as a Deformable Model
| dc.contributor.author | Stahl, D. | en_US |
| dc.contributor.author | Ezquerra, N. | en_US |
| dc.contributor.author | Turk, G. | en_US |
| dc.contributor.editor | D. Ebert and P. Brunet and I. Navazo | en_US |
| dc.date.accessioned | 2014-01-30T06:50:41Z | |
| dc.date.available | 2014-01-30T06:50:41Z | |
| dc.date.issued | 2002 | en_US |
| dc.description.abstract | We present an interactive, physically-based, elastically deformable model using a particle system to model surfaces with interior volumes that can be haptically felt. Oriented particles used in existing surface-only models, and unoriented particles used in volume-only simulations are combined to form a bag-of-particles. Multiple species of surface and volume particles, coupled with prede£ned interspecies parameters, determine the elastic properties of a bag. Starting with an object represented as a 3D voxel bitmap of connected components, the gradient of its distance map gives a vector £eld, or gradient map, that captures the static shape of an object and provides shape-maintaining forces. The gradient map enables the user to de£ne the geometry of the simulated objects, and provides feedback reaction forces allowing a user to feel the model. A bag-of-particles model can simulate several objects in the same scene, as well as objects composed of different materials, such as organs with multiple tissue types. We demonstrate the bag-of-particles approach using a number of different data sources, and apply it to modeling myocardium dynamics. | en_US |
| dc.description.seriesinformation | Eurographics / IEEE VGTC Symposium on Visualization | en_US |
| dc.identifier.isbn | 1-58113-536-X | en_US |
| dc.identifier.issn | 1727-5296 | en_US |
| dc.identifier.uri | https://doi.org/10.2312/VisSym/VisSym02/141-150 | en_US |
| dc.publisher | The Eurographics Association | en_US |
| dc.title | Bag-of-Particles as a Deformable Model | en_US |
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