Animation of trees in wind using sparse motion capture data

Verfasser / Beitragende:
[Jie Long, Bryce Porter, Michael Jones]
Ort, Verlag, Jahr:
2015
Enthalten in:
The Visual Computer, 31/3(2015-03-01), 325-339
Format:
Artikel (online)
ID: 605540446
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024 7 0 |a 10.1007/s00371-014-0927-4  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s00371-014-0927-4 
245 0 0 |a Animation of trees in wind using sparse motion capture data  |h [Elektronische Daten]  |c [Jie Long, Bryce Porter, Michael Jones] 
520 3 |a We present a novel approach to animate an entire tree from the motion of a few branches. Animating medium sized trees in wind presents an arduous situation because it is difficult to create the motion of flexible branches in turbulent wind flows. The animation of trees in wind is important in biology and ecology where understanding how trees move can inform us about the cultivation of trees and forests designed to withstand strong winds. Animation of trees in wind is also useful in the production of films and games. We use passive optical motion capture to record the motion of retro-reflective markers placed on some of the tree branch tips. These motion data are processed to remove noise, create motion traces, and add missing data. Given the processed motion data, we solve for wind velocity in a discrete formulation of aerodynamic drag and tree branch dynamics. This sparse collection of wind velocity samples is interpolated over the volume of the crown and enriched with a turbulence model to create a wind field that drives the animation of an entire tree crown. The wind field can also be used to drive the animation of other similar trees. In this process, 300 KB of data recorded from 10 s of tree motion can be processed and replayed in 16 s of computation time, not including rendering. 
540 |a Springer-Verlag Berlin Heidelberg, 2014 
690 7 |a Motion capture  |2 nationallicence 
690 7 |a Animation  |2 nationallicence 
690 7 |a Natural phenomena  |2 nationallicence 
700 1 |a Long  |D Jie  |u Department of Computer Science, Brigham Young University, 84604, Provo, UT, USA  |4 aut 
700 1 |a Porter  |D Bryce  |u Department of Computer Science, Brigham Young University, 84604, Provo, UT, USA  |4 aut 
700 1 |a Jones  |D Michael  |u Department of Computer Science, Brigham Young University, 84604, Provo, UT, USA  |4 aut 
773 0 |t The Visual Computer  |d Springer Berlin Heidelberg  |g 31/3(2015-03-01), 325-339  |x 0178-2789  |q 31:3<325  |1 2015  |2 31  |o 371 
856 4 0 |u https://doi.org/10.1007/s00371-014-0927-4  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s00371-014-0927-4  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Long  |D Jie  |u Department of Computer Science, Brigham Young University, 84604, Provo, UT, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Porter  |D Bryce  |u Department of Computer Science, Brigham Young University, 84604, Provo, UT, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Jones  |D Michael  |u Department of Computer Science, Brigham Young University, 84604, Provo, UT, USA  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t The Visual Computer  |d Springer Berlin Heidelberg  |g 31/3(2015-03-01), 325-339  |x 0178-2789  |q 31:3<325  |1 2015  |2 31  |o 371