NDLI: Realistic animation of interactive trees

Content Provider	Springer Nature Link
Author	Hu, Shaojun Chiba, rishige He, Dongjian
Copyright Year	2012
Abstract	We present a mathematical model for animating trees realistically by taking into account the influence of natural frequencies and damping ratios. To create realistic motion of branches, we choose three basic mode shapes from the modal analysis of a curved beam, and combine them with a driven harmonic oscillator to approximate Lissajous curve which is observed in pull-and-release test of real trees. The forced vibration of trees is animated by utilizing local coordinate transformation before applying the forced vibration model of curved beams. In addition, we assume petioles are flexible to create natural motion of leaves. A wind field is generated by three-dimensional 1/f β noises to interact with the trees. Besides, our animation model allows users to interactively manipulate trees. We demonstrate several examples to show the realistic motion of interactive trees without using pre-computation or GPU acceleration. Various motions of trees can be achieved by choosing different combinations of natural frequencies and damping ratios according to tree species and seasons.
Starting Page	859
Ending Page	868
Page Count	10
File Format	PDF
ISSN	01782789
Journal	The Visual Computer
Volume Number	28
Issue Number	6-8
e-ISSN	14322315
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-04-24
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Natural phenomena Physically based animation Tree animation Lissajous curve 1/f β noise Computer Science Image Processing and Computer Vision Computer Graphics Artificial Intelligence (incl. Robotics)
Content Type	Text
Resource Type	Article
Subject	Computer Graphics and Computer-Aided Design Computer Vision and Pattern Recognition Software

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