文献类型：期刊文献

中文题名：郁闭林分中立木树高的重建技术研究

英文题名：Study on Reconstruction Technique of Tree Height in Closed Stand

作者：王雪峰[1] 高义[2]

第一作者：王雪峰

机构：[1]中国林业科学研究院资源信息研究所;[2]内蒙根河市阿龙山林业局

年份：2006

卷号：42

期号：6

起止页码：61-65

中文期刊名：林业科学

外文期刊名：Scientia Silvae Sinicae

收录：CSTPCD;;Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金项目(30271079)的部分内容。

语种：中文

中文关键词：遮挡;树高测定;林木调查;立体视觉;三维重建

外文关键词：occlusion; tree height measurement; stand investigation; stereo vision; 3D-reconstruction

分类号：S758

摘要：将立木分为枝下高与树冠高2部分,通过近距离获取枝下高图像对,用立体视觉方法重建枝下高不同部位直径与倾角,以此为基础估计树冠高部分,进而得到树木高度。试验地包括银杏、水杉2个树种,与实际树高相比,重建树高中最大误差是0·0435,最小误差为0·0072。其中3号树(水杉)单侧误差仅为0·0026,表明与干曲线结合的立体视觉重建策略在恢复郁闭林分中立木树高是可行的。
Dividing height of living tree into clean length and height of canopy, obtaining the picture pair of clean height by close shot, the diameter and tilts angles in different positions of clean length are rebuilt by mean of stereo vision. Based on the method, the height of canopy is estimated and the height of tree is obtained, therefore, in the process of tree height reconstructing through stereo vision, the problem from canopy occlusion is solved. The experiment includes two kinds of trees： Ginkgo biloba and Metasequoia glyptostroboides. Comparing with actual tree height, max absolute error of reconstructing height is 0.043 5, min is 0.007 2, tree No. 3 is 0.002 6 in one aspect. These result show the method of tree height reconstructing in closed stand through stereo vision and stem curve is feasible.