Next Article in Journal
Design of Selective Gas Sensors Using Additive-Loaded In2O3 Hollow Spheres Prepared by Combinatorial Hydrothermal Reactions
Previous Article in Journal
Kinematics of Gait: New Method for Angle Estimation Based on Accelerometers
Article Menu

Export Article

Open AccessArticle
Sensors 2011, 11(11), 10586-10602; doi:10.3390/s111110586

Absolute Radiometric Calibration of ALS Intensity Data: Effects on Accuracy and Target Classification

1
Department of Remote Sensing and Photogrammetry, Finnish Geodetic Institute, Geodeetinrinne 2, P.O. Box 15, 02431 Masala, Finland
2
Department of Geoinformatics and Cartography, Finnish Geodetic Institute, Geodeetinrinne 2, P.O. Box 15, 02431 Masala, Finland
3
Estonian University of Life Sciences, Tartu 51014, Estonia
4
Department of Mathematics, Tampere University of Technology, P.O. Box 553, 33101 Tampere, Finland
*
Author to whom correspondence should be addressed.
Received: 15 September 2011 / Revised: 31 October 2011 / Accepted: 4 November 2011 / Published: 7 November 2011
(This article belongs to the Section Remote Sensors)
View Full-Text   |   Download PDF [741 KB, uploaded 21 June 2014]   |  

Abstract

Radiometric calibration of airborne laser scanning (ALS) intensity data aims at retrieving a value related to the target scattering properties, which is independent on the instrument or flight parameters. The aim of a calibration procedure is also to be able to compare results from different flights and instruments, but practical applications are sparsely available, and the performance of calibration methods for this purpose needs to be further assessed. We have studied the radiometric calibration with data from three separate flights and two different instruments using external calibration targets. We find that the intensity data from different flights and instruments can be compared to each other only after a radiometric calibration process using separate calibration targets carefully selected for each flight. The calibration is also necessary for target classification purposes, such as separating vegetation from sand using intensity data from different flights. The classification results are meaningful only for calibrated intensity data. View Full-Text
Keywords: LiDAR; 42.68.Wt; 42.79.Qx calibration; 06.20.fb remote sensing; 07.07.Df 07.07.Df sensors; remote sensing LiDAR; 42.68.Wt; 42.79.Qx calibration; 06.20.fb remote sensing; 07.07.Df 07.07.Df sensors; remote sensing
Figures

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Kaasalainen, S.; Pyysalo, U.; Krooks, A.; Vain, A.; Kukko, A.; Hyyppä, J.; Kaasalainen, M. Absolute Radiometric Calibration of ALS Intensity Data: Effects on Accuracy and Target Classification. Sensors 2011, 11, 10586-10602.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top