Real-time rendering of seasonal influenced trees

We present an algorithm for the visualization of trees during the passing of the year, taking into account the changing and vanishing of the tree's leaves as well as their color changes. In combination with the Phong lighting algorithm the color changes are directly integrated into the lighting model. In conjunction with the use of common off the shelf hardware shader programs we aim for a performance increase allowing for fast realtime rendering of trees. In contrast to earlier works we are able to rely on a more theoretical foundation of biological and chemical insights, taking into account botanic research results about biochemical reactions influencing the leaves' pigments during the seasons. This permits us to make our algorithm as realistic as possible regarding the available information and current research results in both biology and chemistry

[1]  Radomír Mech,et al.  Visual models of plants interacting with their environment , 1996, SIGGRAPH.

[2]  Fabrice Neyret,et al.  Multiscale Shaders for the Efficient Realistic Rendering of Pine-Trees , 2000, Graphics Interface.

[3]  Jason Weber,et al.  Creation and rendering of realistic trees , 1995, SIGGRAPH.

[4]  Proceedings Theory and Practice of Computer Graphics , 2003, Proceedings of Theory and Practice of Computer Graphics, 2003..

[5]  Peter Shirley,et al.  Physically based lighting calculations for computer graphics , 1991 .

[7]  Justin J. Kim.  CALIFORNIA STATE SCIENCE FAIR 2003 PROJECT SUMMARY , 2003 .

[8]  Radomír Mech,et al.  Realistic modeling and rendering of plant ecosystems , 1998, SIGGRAPH.

[9]  V. Leitáo,et al.  Computer Graphics: Principles and Practice , 1995 .

[10]  A. Lindenmayer.  Developmental systems without cellular interactions, their languages and grammars. , 1971, Journal of theoretical biology.

[11]  Pierre Poulin,et al.  Interactive Rendering of Trees with Shading and Shadows , 2001, Rendering Techniques.

[12]  W. Phutdhawong,et al.  Electrocoagulation and Subsequent Recovery of Phenolic Compounds , 2000 .

[13]  Oliver Deussen,et al.  Interactive Modeling of Plants , 1999, IEEE Computer Graphics and Applications.

[14]  Przemyslaw Prusinkiewicz,et al.  The Algorithmic Beauty of Plants , 1990, The Virtual Laboratory.

[15]  Nelson L. Max,et al.  Hierarchical Rendering of Trees from Precomputed Multi-Layer Z-Buffers , 1996, Rendering Techniques.

[16]  A. Lindenmayer.  Mathematical models for cellular interactions in development. I. Filaments with one-sided inputs. , 1968, Journal of theoretical biology.

[17]  Nelson L. Max,et al.  Rendering Trees from Precomputed Z-Buffer Views , 1995, Rendering Techniques.

[18]  Mark James,et al.  Synthetic topiary , 1994, SIGGRAPH.

[19]  Nelson L. Max,et al.  Unified sun and sky illumination for shadows under trees , 1991, CVGIP Graph. Model. Image Process..

[20]  DongSheng Cai,et al.  Virtual autumn coloring system based on biological and fractal model , 2001, Proceedings Ninth Pacific Conference on Computer Graphics and Applications. Pacific Graphics 2001.