Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLI-B7, 705-710, 2016
http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLI-B7/705/2016/
doi:10.5194/isprs-archives-XLI-B7-705-2016
 
21 Jun 2016
A COMPARISON OF LIDAR REFLECTANCE AND RADIOMETRICALLY CALIBRATED HYPERSPECTRAL IMAGERY
A. Roncat1, C. Briese1,2, and N. Pfeifer1 1Research Groups Photogrammetry and Remote Sensing, Department of Geodesy and Geoinformation, TU Wien, Vienna, Austria
2EODC Earth Observation Data Centre for Water Resources Monitoring GmbH, Vienna, Austria
Keywords: Radiometry, Calibration, Laser Scanning, Hyperspectral Abstract. In order to retrieve results comparable under different flight parameters and among different flight campaigns, passive remote sensing data such as hyperspectral imagery need to undergo a radiometric calibration. While this calibration, aiming at the derivation of physically meaningful surface attributes such as a reflectance value, is quite cumbersome for passively sensed data and relies on a number of external parameters, the situation is by far less complicated for active remote sensing techniques such as lidar. This fact motivates the investigation of the suitability of full-waveform lidar as a “single-wavelength reflectometer” to support radiometric calibration of hyperspectral imagery. In this paper, this suitability was investigated by means of an airborne hyperspectral imagery campaign and an airborne lidar campaign recorded over the same area. Criteria are given to assess diffuse reflectance behaviour; the distribution of reflectance derived by the two techniques were found comparable in four test areas where these criteria were met. This is a promising result especially in the context of current developments of multi-spectral lidar systems.
Conference paper (PDF, 3764 KB)


Citation: Roncat, A., Briese, C., and Pfeifer, N.: A COMPARISON OF LIDAR REFLECTANCE AND RADIOMETRICALLY CALIBRATED HYPERSPECTRAL IMAGERY, Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLI-B7, 705-710, doi:10.5194/isprs-archives-XLI-B7-705-2016, 2016.

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