Physically Guided Animation of Trees

dc.contributor.authorHabel, Ralfen_US
dc.contributor.authorKusternig, Alexanderen_US
dc.contributor.authorWimmer, Michaelen_US
dc.date.accessioned2015-02-23T10:16:52Z
dc.date.available2015-02-23T10:16:52Z
dc.date.issued2009en_US
dc.description.abstractThis paper presents a new method to animate the interaction of a tree with wind both realistically and in real time. The main idea is to combine statistical observations with physical properties in two major parts of tree animation. First, the interaction of a single branch with the forces applied to it is approximated by a novel efficient two step nonlinear deformation method, allowing arbitrary continuous deformations and circumventing the need to segment a branch to model its deformation behavior. Second, the interaction of wind with the dynamic system representing a tree is statistically modeled. By precomputing the response function of branches to turbulent wind in frequency space, the motion of a branch can be synthesized efficiently by sampling a 2D motion texture.Using a hierarchical form of vertex displacement, both methods can be combined in a single vertex shader, fully leveraging the power of modern GPUs to realistically animate thousands of branches and ten thousands of leaves at practically no cost.en_US
dc.description.number2en_US
dc.description.seriesinformationComputer Graphics Forumen_US
dc.description.volume28en_US
dc.identifier.doi10.1111/j.1467-8659.2009.01391.xen_US
dc.identifier.issn1467-8659en_US
dc.identifier.pages523-532en_US
dc.identifier.urihttps://doi.org/10.1111/j.1467-8659.2009.01391.xen_US
dc.publisherThe Eurographics Association and Blackwell Publishing Ltden_US
dc.titlePhysically Guided Animation of Treesen_US
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