Real-Time Rendering and Animation of Trees
Ralf Habel, Alexander KusternigReal-Time Rendering and Animation of Trees
Content:
Information
- Publication Type: Miscellaneous Publication
- Date: 3.-7. August 2009
- Keywords: Real-Time Rendering, Trees, Animation
Abstract
This demonstration combines novel methods for physically accurate yet efficient rendering and animation of trees under dynamic lighting conditions. A new leaf shading method is used that models the high-frequency structures such as veins and bulges to reproduce all important lighting attributes on a physical basis. Those structures are also used to calculate the translucency of leaves, which is modeled with physically based subsurface scattering, incorporating self-shadowing, thickness variations and varying albedo. This allows consistent reflective and translucent shading without constraining lighting or animation for close-up views. The individual deformation and animation of leaves and branches is defined by their physical properties such as shape and elasticity. A structural mechanics model is solved and combined with a length correction to achieve a physically plausible bending. To model the tree-wind interaction, a spectral approach is applied that allows for a physically guided animation as well as a high level of control. The applied methods have been published in "Physically Based Real-time Translucency for Leaves (EGSR 2007)" and "Physically Guided Animation of Trees (Eurographics 2009)".Additional Files and Images
Additional images and videos:.avi.png) | Animation in HD (H.264.720p30): Animation in HD (H.264.720p30) |
.avi.png) | Animation in SD (XVID.360p30): Animation in SD (XVID.360p30) |
