Modeling of Trees with Interactive L-System and 3D Gestures

We propose a modeling system that enables users to create tree models with 3D gesture input and Interactive L-system. It generates tree models by using growth simulation based on the trunk or silhouette shapes of trees given by user gestures. The Interactive L-system is one of the growth simulation algorithm, having spatial information of tree models, and allows users to generate, manipulate, and edit the shape of tree models by user’s direct input interactively. The system carefully addresses the fragile balance and tradeoff between the freedom of user interaction and the autonomy of tree growth. Users intuitively and easily create tree models that have the exact features of branching structures or the silhouette shape of trees according to user intentions and imagination.