Ground truth measurement of trees using terrestrial laser for satellite remote sensing
Ground truth measurement of trees using terrestrial laser for satellite remote sensing
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DOI：
10.1109/igarss.2013.6723228
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发表时间：
2013-07
期刊：
影响因子：
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通讯作者：
A. Kato;J. Morgenroth;D. Kelbe;Christopher A. Gomez;J. Aardt
中科院分区：
文献类型：
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作者：
A. Kato;J. Morgenroth;D. Kelbe;Christopher A. Gomez;J. Aardt
为环境政策进行森林监测需要在实地采用准确和有效的实地调查技术。本文利用便携式地面激光扫描仪（TLS）对新西兰基督城混交林林分的叶面积指数（LAI）进行了估算。我们的方法将激光XYZ坐标转换为正交坐标，以创建鱼眼图像，从其中估算LAI。结果高度相关的LAI估计从三个传统的技术：辐射AccuPAR（R2 = 0.81），Landsat TM（R2 = 0.79），鱼眼透镜摄影（R2 = 0.91）。这种新技术是一种简单有效的方法来收集和分析叶面积指数，并提供良好的地面实况数据的卫星遥感。
Forest monitoring for environmental policy requires accurate and efficient ground-truthing techniques in the field. In this paper, a portable terrestrial laser scanner (TLS) is utilized to estimate leaf area index (LAI) of mixed forest stands in Christchurch, New Zealand. Our method converted laser XYZ coordinates to orthographic coordinates to create fish-eye images, from which LAI was estimated. The results were highly correlated with LAI estimates from three traditional techniques: radiation obtained by AccuPAR (R2 = 0.81), Landsat TM (R2 = 0.79), and fish-eye lens photography (R2 = 0.91). This novel technique is a simple and efficient way to collect and analyze LAI and provides good ground truth data for satellite remote sensing.