Plants are the general life forms in the nature. They are very close to our daily lives. Plant growth visualization is one of the most time consuming, complex and pivotal techniques. It is very difficult because of the various plants. The development of plant growth visualization opens up a vast range of application, including agriculture and forest research, design of scene virescence, education, entertainment, business and so on. In this paper, we mainly introduce a method of modeling plant organs. It develops a graphical package that generates 2D symbols and allows the 3D display of the models of plant organs. This software has many functions to satisfy various shapes of organs, and one kind of complex organ can be composed by several functions. 2D symbols are the most representative sections or plans of plant organs. They not only can project on curved surface or sphere to shape curved surface, but also have some functions like rotation, extrusion. The 3D models can communicate with 2D symbols such as choosing the color of each part, and so on. The simulation of plant organs is one part of plant growth visualization. It saves the result using the union format of AMAP Company to form entire plants with other software that model the other parts of plants. At this time, in order to change the size of the organs under the condition of the same shape according to the data coming from the field, the 3D models of plant organs must be normalized.
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