应用Lensphoto多基线数字近景摄影测量系统,对5、6、7、8、9年生核桃和5、6、8、9、10年生杏树的三维坐标参数进行了近景摄影测量,得到平均误差在X轴方向误差为0.001 0 m,Y轴方向误差为0.001 4 m,Z轴方向误差为0.0004 m,水平方向误差为0.001 8 m,整体误差为0.001 8m.以6年生核桃和9年生杏树为例,利用多基线数字近景摄影测量系统对被测树木进行了形态结构测定,获得了高精度的树高、胸径、枝下高、冠幅以及分枝角度等主要形态结构数据,从而为树木形态结构精确测定以及树木可视化研究提供基础数据和理论支持.%The 3-dimensional coordinate parameters of 5,6,7,8,9 year-old walnut trees and 5,6,8,9,10 year-old apricot trees were measured by using Lensphoto multi-baseline digital close-range photogrammetry system. The results indicated that average error of x axis direction was 0.001 0 m,average error of y axis direction was 0. 001 4 m,average error of z axis direction was 0. 000 4 m,average error of horizontal direction was 0.001 8 m and average global error was 0.001 8 m. Taking the 6 year-old walnut tree and 9 year-old apricot tree as example,tree height,diameter, height under branch,crown width and branching angle etc. Main parameters of configuration structure with high precision was obtained by u-sing multi-baseline digital close-range photogrammetry system to provide basic data for the study of tree morphology and visualization.
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