The use of positional information in the modeling of plants

Abstract

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. Reference The use of positional information in the modeling of plants AbstractWe 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.

Morphological Plant Modeling: Unleashing Geometric and Topological Potential within the Plant Sciences

“…These rules unravel the differences between observed plant morphologies across plant species (Kurth, 1994;Prusinkiewicz et al, 2001;Barthélémy and Caraglio, 2007) and are capable of modeling fractal descriptions that reflect the repetitive and modular appearance of branching structures (Horn, 1971;Hallé, 1971Hallé, , 1986. Recent developments in functional-structural modeling abstract the genetic mechanisms driving the developmental program of tree crown morphology into a computational framework (Runions et al, 2007;Palubicki et al, 2009;Palubicki, 2013).…”

The Sketch L-System: Global Control of Tree Modeling Using Free-Form Strokes

“…They also implemented the plant modeling software L-Studio based on cpfg [20]. Recently, Prusinkiewicz et al [21] also proposed the use of positional information to control parameters along a plant axis. Boudon et al [2] proposed an L-system-based process for designing bonsai tree models, which uses decomposition graphs to facilitate the manipulation of hierarchical parameters.…”

A Developmental Model for Generative Media

“…The use of multiple instruction sequences in a single cell is a different solution to a similar problem encountered by Prusinkiewicz and colleagues in the development of their interactive system to model plants [5]. Here they combined a C-like programming language and Chomsky grammars to enable sequential rewriting of strings, rather than the parallel development specified by L-systems.…”

“…Subsequent developments incorporated other continuous developmental control, such as the use of differential equations to model growth and signaling in modules [3] and the effects of environmental constraints [4]. More recent work uses Chomsky grammars in combination with interactive curve editing software to obtain greater visual modeling flexibility and control [5].…”