NDLI: Analysis on the inversion accuracy of LAI based on simulated point clouds of terrestrial LiDAR of tree by ray tracing algorithm

Content Provider	IEEE Xplore Digital Library
Author	Yan Wang Donghui Xie Guangjian Yan Wuming Zhang Xihan Mu
Copyright Year	2013
Description	Author affiliation: State Key Lab. of Remote Sensing, Beijing Normal Univ., Beijing, China (Yan Wang; Donghui Xie; Guangjian Yan; Wuming Zhang; Xihan Mu)
Abstract	Terrestrial LiDAR Scanning(TLS) technology can quickly acquire three-dimensional information of forest canopy with high precision. As a new technique of data collection, it has been gradually applied to characterize structural attributes such as plant area densities. This paper presented a ray-tracing method to simulate laser intersection with a single tree and retrieves the plant area index based on gap-fraction model. The simulation model, based on ray-tracing method, was highly dependent on the sensor configuration and the spatial characteristics of the tree examined. Plant area index was retrieved by the gap-fraction model using the simulated point clouds. Given the significant cost and complexity of LiDAR data acquisition, it was necessary to identify the operational parameters to maximize the benefit. Therefore, the factors that might affect the simulation and inversion procedures are discussed extensively. Results showed that the simulation model was capable of predicting what survey configuration would be optimal and facilitating inversion algorithm development.
Sponsorship	IEEE Geosci. Remote Sens. Soc.
Starting Page	532
Ending Page	535
File Size	405082
Page Count	4
File Format	PDF
ISBN	9781479911141
ISSN	21536996
DOI	10.1109/IGARSS.2013.6721210
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-07-21
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Vegetation Laser radar Indexes Laser beams Remote sensing Ray tracing Laser modes Plant Area Index Terrestrial LiDAR Simulated point clouds Gap fraction
Content Type	Text
Resource Type	Article

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