In this paper we introduce a method for the modelling of trees with exactly given shape. This was not possible with previous methods because the L-system parameters were dif￡cult to set in order to get the exact shape of a plant. With our method we can generate the L-system grammars which will generate the tree with requested silhouette easily. We demonstrate our method on modelling of bonsai trees. They have complex shape and the shape is the most important factor. We proposed the approach consisting of two novel ideas: generating the silhouette table resulting in the exact shape of trunk and main branches and distribution of small branches with leaves in next table according to a given density function.
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