BOUDON , Frédéric

Plant geometry is a complex object, combining geometries of numerous different organs, depending of the considered scale of analysis and variable in time and from one species to another. Because of this complexity and plasticity, modeling plants geometry become a challenging multi-disciplinary research topic for eco-physiological modeling to...

Lindenmayer-systems were conceived as a mathematical framework for modeling growth of plants. In this paper, we present L-Py, a simulation package that mixes L-systems construction with the Python high-level modeling language. In addition to this software module, an integrated visual development environment has been developed that facilitates...

Introduction - Functional-Structural Plant Models give new opportunities to understand plant growth and interaction with their environment. In the last decade, dedicated modelling platforms allowed the creation of a multitude of models, built upon series of dedicated tools for the representation, acquisition, analysis and simulation of plant...

This paper gives an overview of computer graphics representations of trees commonly used for the rendering of complex scene of vegetation. Looking for the right compromise between realism and efficiency has lead researchers to consider various types of geometrical plant models with different types of complexity. To achieve realist plant model,...

La génération de paysage naturel virtuel réaliste a beaucoup dapplications, aussi bien en infographie quen éco- logie par exemple. Ce problème est généralement traité en deux étapes. Une distribution des plantes sur le terrain est dabord calculée en utilisant des modèles simplifiés de plantes. Puis ces modèles sont utilisés pour générer des...

FSPMs make intensive use of algorithms that manipulate the branching structure of plants. These algorithms may serve a variety of computational purposes related to these branching structures such as displaying them on screen, extracting data samples and statistics from them, comparing them, computing flows of matter (water, nutrients, signals)...

We develop an algorithm to digitize in situ canopy and to tag automatically each of its leaves. This algorithm fuses the distance information and the intensity values of a terrestrial LiDAR scanner.

Mature computer vision techniques allow the reconstruction of challenging 3D objects from images. However, due to high complexity of plant topology, dedicated methods for generating 3D plant models must be devised. We propose to generate a 3D model of a plant, using an analysis-by-synthesis method mixing information from a single image and a...

L-systems were conceived as a mathematical framework for modeling growth of plants. In this paper, we present L-Py, a simulation software that mixes L-systems construction with the Python high-level modeling language. In addition to this software module, an integrated visual development environment has been developed that facilitates the...

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Modeling natural elements such as trees in a plausible way, while offering simple and rapid user control, is a challenge. This paper presents a method based on a new structure from silhouettes paradigm. We claim that sketching the silhouettes of foliage at multiple scales is quicker and more intuitive for a user than having to sketch each...

Plants are essential elements of virtual worlds to get pleas- ant and realistic 3D environments. Even if mature computer vision techniques allow the reconstruction of challenging 3D objects from images, due to high complexity of plant topology, dedicated methods for generating 3D plant models must be devised. We propose an analysis-by-...

Plants usually show intricate structures whose representation and management are an important source of complexity of models. Yet plant structures are also repetitive: although not identical, the organs, axes, and branches at different positions are often highly similar. From a formal perspective, this repetitive character of plant structures...

Plants usually show intricate structures whose representation and management are an important source of complexity of models. Yet plant structures are also repetitive: although not identical, the organs, axes, and branches at different positions are often highly similar. From a formal perspective, this repetitive character of plant structures...