We integrate into plant models three elements of plant representation identified as important by artists: posture (manifested in curved stems and elongated leaves), gradual variation of features, and the progression of the drawing process from overall silhouette to local details. The resulting algorithms increase the visual realism of plant models by offering an intuitive control over plant form and supporting an interactive modeling process. The algorithms are united by the concept of expressing local attributes of plant architecture as functions of their location along the stems.Keywords: realistic image synthesis, interactive procedural modeling, plant, positional information, phyllotaxis, Chomsky grammar, L-system, differential turtle geometry, generalized cylinder.
Przemyslaw Prusinkiewicz, Lars Muendermann, Radoslaw Karwowski, and Brendan Lane. The use of positional information in the modeling of plants. Proceedings of SIGGRAPH 2001 (Los Angeles, California, August 12-17, 2001), pp. 289-300.Download PDF (~10 MB)