Brightness measurements and calibration with airborne and terrestrial laser scanners

S. Kaasalainen, A. Kukko, Tomi Lindroos, P. Litkey, H. Kaartinen, Jussi Hyyppä, E. Ahokas

Research output: Contribution to journalArticleScientificpeer-review

59 Citations (Scopus)

Abstract

Brightness measurement with an airborne or terrestrial laser scanner is a new concept since the intensity information recorded by the laser scanner detectors has, thus far, not been used or implemented in surface brightness studies. This is partly due to the calibration problems and the lack of information on the behavior of laser light in the observation geometry where laser scanners operate. In addition, the 3-D position information has, thus far, been sufficient for surface modeling. We present a new type of empirical calibration scheme for laser scanner intensity developed with a terrestrial laser scanner in laboratory and field conditions using brightness targets and a calibrated reference panel. We compare the results with those obtained from airborne laser scanner flight campaigns using the same set of brightness targets. It turns out that the relative calibration of laser scanner intensity is possible using a calibrated grayscale but requires background information of the targets and the conditions in which the measurements are carried out. We also discuss the feasibility and uses of a laser-scanner-based intensity measurement in general.
Original languageEnglish
Pages (from-to)528 - 533
Number of pages6
JournalIEEE Transactions on Geoscience and Remote Sensing
Volume46
Issue number2
DOIs
Publication statusPublished - 2008
MoE publication typeA1 Journal article-refereed

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scanner
Luminance
laser
Calibration
calibration
Lasers
flight
Detectors
geometry
Geometry

Keywords

  • backscatter
  • laboratory measurement
  • laser scanning
  • lasers
  • reflectance
  • calibration
  • remote sensing
  • lidars

Cite this

Kaasalainen, S. ; Kukko, A. ; Lindroos, Tomi ; Litkey, P. ; Kaartinen, H. ; Hyyppä, Jussi ; Ahokas, E. / Brightness measurements and calibration with airborne and terrestrial laser scanners. In: IEEE Transactions on Geoscience and Remote Sensing. 2008 ; Vol. 46, No. 2. pp. 528 - 533.
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abstract = "Brightness measurement with an airborne or terrestrial laser scanner is a new concept since the intensity information recorded by the laser scanner detectors has, thus far, not been used or implemented in surface brightness studies. This is partly due to the calibration problems and the lack of information on the behavior of laser light in the observation geometry where laser scanners operate. In addition, the 3-D position information has, thus far, been sufficient for surface modeling. We present a new type of empirical calibration scheme for laser scanner intensity developed with a terrestrial laser scanner in laboratory and field conditions using brightness targets and a calibrated reference panel. We compare the results with those obtained from airborne laser scanner flight campaigns using the same set of brightness targets. It turns out that the relative calibration of laser scanner intensity is possible using a calibrated grayscale but requires background information of the targets and the conditions in which the measurements are carried out. We also discuss the feasibility and uses of a laser-scanner-based intensity measurement in general.",
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Brightness measurements and calibration with airborne and terrestrial laser scanners. / Kaasalainen, S.; Kukko, A.; Lindroos, Tomi; Litkey, P.; Kaartinen, H.; Hyyppä, Jussi; Ahokas, E.

In: IEEE Transactions on Geoscience and Remote Sensing, Vol. 46, No. 2, 2008, p. 528 - 533.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Brightness measurements and calibration with airborne and terrestrial laser scanners

AU - Kaasalainen, S.

AU - Kukko, A.

AU - Lindroos, Tomi

AU - Litkey, P.

AU - Kaartinen, H.

AU - Hyyppä, Jussi

AU - Ahokas, E.

PY - 2008

Y1 - 2008

N2 - Brightness measurement with an airborne or terrestrial laser scanner is a new concept since the intensity information recorded by the laser scanner detectors has, thus far, not been used or implemented in surface brightness studies. This is partly due to the calibration problems and the lack of information on the behavior of laser light in the observation geometry where laser scanners operate. In addition, the 3-D position information has, thus far, been sufficient for surface modeling. We present a new type of empirical calibration scheme for laser scanner intensity developed with a terrestrial laser scanner in laboratory and field conditions using brightness targets and a calibrated reference panel. We compare the results with those obtained from airborne laser scanner flight campaigns using the same set of brightness targets. It turns out that the relative calibration of laser scanner intensity is possible using a calibrated grayscale but requires background information of the targets and the conditions in which the measurements are carried out. We also discuss the feasibility and uses of a laser-scanner-based intensity measurement in general.

AB - Brightness measurement with an airborne or terrestrial laser scanner is a new concept since the intensity information recorded by the laser scanner detectors has, thus far, not been used or implemented in surface brightness studies. This is partly due to the calibration problems and the lack of information on the behavior of laser light in the observation geometry where laser scanners operate. In addition, the 3-D position information has, thus far, been sufficient for surface modeling. We present a new type of empirical calibration scheme for laser scanner intensity developed with a terrestrial laser scanner in laboratory and field conditions using brightness targets and a calibrated reference panel. We compare the results with those obtained from airborne laser scanner flight campaigns using the same set of brightness targets. It turns out that the relative calibration of laser scanner intensity is possible using a calibrated grayscale but requires background information of the targets and the conditions in which the measurements are carried out. We also discuss the feasibility and uses of a laser-scanner-based intensity measurement in general.

KW - backscatter

KW - laboratory measurement

KW - laser scanning

KW - lasers

KW - reflectance

KW - calibration

KW - remote sensing

KW - lidars

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JO - IEEE Transactions on Geoscience and Remote Sensing

JF - IEEE Transactions on Geoscience and Remote Sensing

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