We present an interactive modeling system for flower composition that supports seamless transformation from
an initial sketch to a detailed three-dimensional (3D) model. To begin, the user quickly sketches the overall appearance
of the desired model as a collection of two-dimensional (2D) strokes on hierarchical billboards. Then
the user iteratively replaces the coarse sketch with a detailed 3D model referring to the initial sketch as a guide.
Since a flower model consists of many repetitive components, the system helps the user to reuse 3D components
to facilitate the modeling process. The global view of the entire model is always shown in a separate window to
visualize how local modifications affect the global appearance. Our system helps the user make appropriate design
decisions to keep the model consistent with the initial design, which is difficult in traditional bottom-up
plant modeling systems in which the global view only emerges after all of the details are specified.
Takashi Ijiri, Shigeru Owada, and Takeo Igarashi: Seamless Integration of Initial Sketching and Subsequent Detail Editing in Flower Modeling.
Computer Graphics Forum, 25, 3, 617-624. (In Proc. of Eurographics 2006), 2006.