一种基于图象的林分三维可视模型  

A Visible Stand Model Based on Image of Tree

作　　者：宋铁英[1] 

机构地区：[1]北京林业大学基础科学与信息工程学院

出　　处：《北京林业大学学报》1998年第4期93-97,共5页Journal of Beijing Forestry University

基　　金：国家自然科学基金

摘　　要：该文介绍一种基于树的图象的林分三维可视模型．以一株典型形体的树木为原型代表林分的平均木，应用图象重采样技术对该原型木图象按比例缩放生成林分中各株林木的图象．根据投影原理计算每株林木在投影平面上的象素坐标和缩放比例，对各林木图象再次缩放后移动到林木的平面坐标位置合成一幅有立体感的林分图．与基于规则几何体的和基于树的三维造型的林分三维可视模型相比，这种方法产生的林分立体图真实感强，速度快，适合开发成应用软件用于森林与植物景观的设计和仿真．A visible model of stand based on image of tree is introduced in this paper.A prototype of tree,which is with typical orm and structure of this species,is treated as the average tree in a stand.Using the image resampling technology,the image of this prototype tree can be magnified or reduced to different scale in order to simulate each tree in this stand.The coordinate of pixel and the scale of each tree in a projection plane is calculated by means of the projection principle.The scaled images of all trees are moved to their corresponding coordinates in the display plate and the stand image is formed.This visible stand model can quickly provide more really stereoscopic image of the stand.An application software based on this model can be developed for the design and simulation of the landscape of forests and plants.

关 键 词：可视化 图象处理 林分生长模型 景观设计 

分 类 号：S758.5[农业科学—森林经理学]