Separating leaves from trunks and branches with dual-wavelength terrestrial lidar scanning

Zhan Li; Ewan Douglas; Alan Strahler; Crystal Schaaf; Xiaoyuan Yang; Zhuosen Wang; Tian Yao; Feng Zhao; Edward J. Saenz; Ian Paynter; Curtis E. Woodcock; Supriya Chakrabarti; Timothy Cook; Jason Martel; Glenn Howe; David L.B. Jupp; Darius S. Culvenor; Glenn J. Newnham; Jenny L. Lovell

doi:10.1109/IGARSS.2013.6723554

Separating leaves from trunks and branches with dual-wavelength terrestrial lidar scanning

Zhan Li, Ewan Douglas, Alan Strahler, Crystal Schaaf, Xiaoyuan Yang, Zhuosen Wang, Tian Yao, Feng Zhao, Edward J. Saenz, Ian Paynter, Curtis E. Woodcock, Supriya Chakrabarti, Timothy Cook, Jason Martel, Glenn Howe, David L.B. Jupp, Darius S. Culvenor, Glenn J. Newnham, Jenny L. Lovell

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

24 Scopus citations

Abstract

Terrestrial laser scanning combining both near-infrared (NIR) and shortwave-infrared (SWIR) wavelengths can readily distinguish broad leaves from trunks, branches, and ground surfaces. Merging data from the 1548 nm SWIR laser in the Dual-Wavelength Echidna^® Lidar (DWEL) instrument in engineering trials with data from the 1064 nm NIR laser in the Echidna ^® Validation Instrument (EVI), we imaged a deciduous forest scene at the Harvard Forest, Petersham, Massachusetts, and showed that trunks are about twice as bright as leaves at 1548 nm, while they have about equal brightness at 1064 nm. The reduced return of leaves in the SWIR is also evident in merged point clouds constructed from the two laser scans. This distinctive difference between leaf and trunk reflectance in the two wavelengths validates the principle of effective discrimination of leaves from other targets using the new dual-wavelength instrument.

Original language	English (US)
Title of host publication	2013 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2013 - Proceedings
Pages	3383-3386
Number of pages	4
DOIs	https://doi.org/10.1109/IGARSS.2013.6723554
State	Published - 2013
Externally published	Yes
Event	2013 33rd IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2013 - Melbourne, VIC, Australia Duration: Jul 21 2013 → Jul 26 2013

Publication series

Name	International Geoscience and Remote Sensing Symposium (IGARSS)

Conference

Conference	2013 33rd IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2013
Country/Territory	Australia
City	Melbourne, VIC
Period	7/21/13 → 7/26/13

Keywords

Leaves
Near-infrared reflectance
Shortwave infrared reflectance
Terrestrial lidar
Trunks

ASJC Scopus subject areas

Computer Science Applications
General Earth and Planetary Sciences

Access to Document

10.1109/IGARSS.2013.6723554

Cite this

Li, Z., Douglas, E., Strahler, A., Schaaf, C., Yang, X., Wang, Z., Yao, T., Zhao, F., Saenz, E. J., Paynter, I., Woodcock, C. E., Chakrabarti, S., Cook, T., Martel, J., Howe, G., Jupp, D. L. B., Culvenor, D. S., Newnham, G. J., & Lovell, J. L. (2013). Separating leaves from trunks and branches with dual-wavelength terrestrial lidar scanning. In 2013 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2013 - Proceedings (pp. 3383-3386). Article 6723554 (International Geoscience and Remote Sensing Symposium (IGARSS)). https://doi.org/10.1109/IGARSS.2013.6723554

Separating leaves from trunks and branches with dual-wavelength terrestrial lidar scanning. / Li, Zhan; Douglas, Ewan; Strahler, Alan et al.
2013 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2013 - Proceedings. 2013. p. 3383-3386 6723554 (International Geoscience and Remote Sensing Symposium (IGARSS)).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Li, Z, Douglas, E, Strahler, A, Schaaf, C, Yang, X, Wang, Z, Yao, T, Zhao, F, Saenz, EJ, Paynter, I, Woodcock, CE, Chakrabarti, S, Cook, T, Martel, J, Howe, G, Jupp, DLB, Culvenor, DS, Newnham, GJ & Lovell, JL 2013, Separating leaves from trunks and branches with dual-wavelength terrestrial lidar scanning. in 2013 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2013 - Proceedings., 6723554, International Geoscience and Remote Sensing Symposium (IGARSS), pp. 3383-3386, 2013 33rd IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2013, Melbourne, VIC, Australia, 7/21/13. https://doi.org/10.1109/IGARSS.2013.6723554

Li Z, Douglas E, Strahler A, Schaaf C, Yang X, Wang Z et al. Separating leaves from trunks and branches with dual-wavelength terrestrial lidar scanning. In 2013 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2013 - Proceedings. 2013. p. 3383-3386. 6723554. (International Geoscience and Remote Sensing Symposium (IGARSS)). doi: 10.1109/IGARSS.2013.6723554

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title = "Separating leaves from trunks and branches with dual-wavelength terrestrial lidar scanning",

abstract = "Terrestrial laser scanning combining both near-infrared (NIR) and shortwave-infrared (SWIR) wavelengths can readily distinguish broad leaves from trunks, branches, and ground surfaces. Merging data from the 1548 nm SWIR laser in the Dual-Wavelength Echidna{\textregistered} Lidar (DWEL) instrument in engineering trials with data from the 1064 nm NIR laser in the Echidna {\textregistered} Validation Instrument (EVI), we imaged a deciduous forest scene at the Harvard Forest, Petersham, Massachusetts, and showed that trunks are about twice as bright as leaves at 1548 nm, while they have about equal brightness at 1064 nm. The reduced return of leaves in the SWIR is also evident in merged point clouds constructed from the two laser scans. This distinctive difference between leaf and trunk reflectance in the two wavelengths validates the principle of effective discrimination of leaves from other targets using the new dual-wavelength instrument.",

keywords = "Leaves, Near-infrared reflectance, Shortwave infrared reflectance, Terrestrial lidar, Trunks",

author = "Zhan Li and Ewan Douglas and Alan Strahler and Crystal Schaaf and Xiaoyuan Yang and Zhuosen Wang and Tian Yao and Feng Zhao and Saenz, {Edward J.} and Ian Paynter and Woodcock, {Curtis E.} and Supriya Chakrabarti and Timothy Cook and Jason Martel and Glenn Howe and Jupp, {David L.B.} and Culvenor, {Darius S.} and Newnham, {Glenn J.} and Lovell, {Jenny L.}",

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AU - Saenz, Edward J.

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AU - Woodcock, Curtis E.

AU - Chakrabarti, Supriya

AU - Cook, Timothy

AU - Martel, Jason

AU - Howe, Glenn

AU - Jupp, David L.B.

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AB - Terrestrial laser scanning combining both near-infrared (NIR) and shortwave-infrared (SWIR) wavelengths can readily distinguish broad leaves from trunks, branches, and ground surfaces. Merging data from the 1548 nm SWIR laser in the Dual-Wavelength Echidna® Lidar (DWEL) instrument in engineering trials with data from the 1064 nm NIR laser in the Echidna ® Validation Instrument (EVI), we imaged a deciduous forest scene at the Harvard Forest, Petersham, Massachusetts, and showed that trunks are about twice as bright as leaves at 1548 nm, while they have about equal brightness at 1064 nm. The reduced return of leaves in the SWIR is also evident in merged point clouds constructed from the two laser scans. This distinctive difference between leaf and trunk reflectance in the two wavelengths validates the principle of effective discrimination of leaves from other targets using the new dual-wavelength instrument.

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Separating leaves from trunks and branches with dual-wavelength terrestrial lidar scanning

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

Access to Document

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