Murakami, N.Onishi, K.Kitamura, Y.Kishino, F.Erik Kjems and Roland Blach2014-01-272014-01-272005978-3-905674-06-41727-530Xhttps://doi.org/10.2312/EGVE/IPT_EGVE2005/097-104We propose a modeling system that enables users to create tree models with 3D gesture input. It generates tree models by using growth simulation based on the trunk or silhouette shapes of trees given by user gestures. 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.Categories and Subject Descriptors (according to ACM CCS): I.3.6 [Computer Graphics]: Methodology and Techniques - Interaction Techniques