Visual Simulation of the Parameterized Tree and the Stand Scene

LI Yong-liang; JU Hong-bo; ZHANG Huai-qing; JIANG Xian; LIU Hai

The Huangfengqiao State-owned Forest Farm in Hunan Province was selected as a test area. A typical even-aged Chinese fir pure plantation with regular boundary was chosen as the research object. The tree height, DBH, crown width, crown height, under-branch height and the tree location information were measured. The parameterized tree controlled by the crown shape was simulated by researching the crown shape function and using the Direct 3D technique. The conversion method of the tree model format was studied in order to provide the model data to the stand scene. The simulation method of the stand scene was researched and the stand scene was simulated by using MOGRE technique. The results show that the simulation algorithms of the parameterized tree are simple and applicable, the tree-measuring factors can be directly used by the verisimilitude model of the tree which can describe the individual difference, and the verisimilitude scene can be quickly and effectively constructed with MOGRE technique. The data can be easily acquired and the methods which have strong applicability can realistically simulate the individual tree and the stand scene and provide new ideas for the study of forest competitive relationship, stand growth, stand structure and stand management.

1. Research Institute of Forest Resource Information Techniques, Chinese Academy of Forestry, Beijing 100091, China

Received Date: 2012-12-15

Abstract: The Huangfengqiao State-owned Forest Farm in Hunan Province was selected as a test area. A typical even-aged Chinese fir pure plantation with regular boundary was chosen as the research object. The tree height, DBH, crown width, crown height, under-branch height and the tree location information were measured. The parameterized tree controlled by the crown shape was simulated by researching the crown shape function and using the Direct 3D technique. The conversion method of the tree model format was studied in order to provide the model data to the stand scene. The simulation method of the stand scene was researched and the stand scene was simulated by using MOGRE technique. The results show that the simulation algorithms of the parameterized tree are simple and applicable, the tree-measuring factors can be directly used by the verisimilitude model of the tree which can describe the individual difference, and the verisimilitude scene can be quickly and effectively constructed with MOGRE technique. The data can be easily acquired and the methods which have strong applicability can realistically simulate the individual tree and the stand scene and provide new ideas for the study of forest competitive relationship, stand growth, stand structure and stand management.

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Reference (18)

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Visual Simulation of the Parameterized Tree and the Stand Scene

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