| Virtual Plant is a certain model based on morphology and physiological function, which reconstructs the spatial geometry and the growth of plant on the computer by using virtual reality. Researches on Virtual plant make it valuable in simulating plant growth on the computer. It also has potential applications in precision agriculture and sustainable agriculture.Modeling virtual plants faithful to botany is one of the important aspects of research and application. First, L-system is applied in simulating the plant growth from the growth rules of main stems. Second, simulated analysis and another plant growth modeling method based on virtual organ are used to model the apical dominance. The main research in this paper can be concluded as follows:①Background on research of the virtual plant is pointed out; the L-system theory and its extension are elaborated.②Fine-grained simulation of plant stem is presented. Plant growth was iterated by dividing the stem into tertiary structure of meristematic zone, elongation zone, and maturation zone. The parametric L-systems theories were applied in simulating the geometry oranizaiton of plant. This approach can improve the controllability of different organs in plant growth by setting three kinds of lateral bud factors. Experiments show that this method can reduce the complexity of integrated L-systems, and make the simulation of plant's growth more faithful to botany.③The division of the tertiary structure of plant stem is applied on the modeling technology"virtual organ based plant growth simulation method". The simulated experimental results show that the new approach can be improved and applied to resolve the problems of L system.④The apical dominance of plant is modeling on computers based on its mechanism, virtual organ based plant growth models, and the division of tertiary structure of plant growth. Experiments prove that research results of this dissertation can help build the models of plant function. |
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