World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

Reference Value Provision Schemes for Attenuation Correction of Full-waveform Airborne Laser Scanner Data : Volume Ii-3/W5, Issue 1 (19/08/2015)

By Richter, K.

Click here to view

Book Id: WPLBN0004013958
Format Type: PDF Article :
File Size: Pages 8
Reproduction Date: 2015

Title: Reference Value Provision Schemes for Attenuation Correction of Full-waveform Airborne Laser Scanner Data : Volume Ii-3/W5, Issue 1 (19/08/2015)  
Author: Richter, K.
Volume: Vol. II-3/W5, Issue 1
Language: English
Subject: Science, Isprs, Annals
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2015
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

Maas, H., Blaskow, R., Stelling, N., & Richter, K. (2015). Reference Value Provision Schemes for Attenuation Correction of Full-waveform Airborne Laser Scanner Data : Volume Ii-3/W5, Issue 1 (19/08/2015). Retrieved from http://www.ebooklibrary.org/


Description
Description: Institute of Photogrammetry and Remote Sensing, Technische Universität Dresden, Dresden, Germany. The characterization of the vertical forest structure is highly relevant for ecological research and for better understanding forest ecosystems. Full-waveform airborne laser scanner systems providing a complete time-resolved digitization of every laser pulse echo may deliver very valuable information on the biophysical structure in forest stands. To exploit the great potential offered by full-waveform airborne laser scanning data, the development of suitable voxel based data analysis methods is straightforward. Beyond extracting additional 3D points, it is very promising to derive voxel attributes from the digitized waveform directly. However, the ’history’ of each laser pulse echo is characterized by attenuation effects caused by reflections in higher regions of the crown. As a result, the received waveform signals within the canopy have a lower amplitude than it would be observed for an identical structure without the previous canopy structure interactions (Romanczyk et al., 2012).

To achieve a radiometrically correct voxel space representation, the loss of signal strength caused by partial reflections on the path of a laser pulse through the canopy has to be compensated by applying suitable attenuation correction models. The basic idea of the correction procedure is to enhance the waveform intensity values in lower parts of the canopy for portions of the pulse intensity, which have been reflected in higher parts of the canopy. To estimate the enhancement factor an appropriate reference value has to be derived from the data itself. Based on pulse history correction schemes presented in previous publications, the paper will discuss several approaches for reference value estimation. Furthermore, the results of experiments with two different data sets (leaf-on/leaf-off) are presented.


Summary
REFERENCE VALUE PROVISION SCHEMES FOR ATTENUATION CORRECTION OF FULL-WAVEFORM AIRBORNE LASER SCANNER DATA

 

Click To View

Additional Books


  • Building Façade Separation in Vertical A... (by )
  • The National 3-d Geospatial Information ... (by )
  • Automated Target-free Network Orienation... (by )
  • Towards a Real Estate Registry 3D Model ... (by )
  • Design, Implementation and Applications ... (by )
  • Feature Relevance Assessment for the Sem... (by )
  • Augmented Reality System Using Lidar Poi... (by )
  • A Methodology for Assessing Openstreetma... (by )
  • Evaluating Photogrammetric Approach of I... (by )
  • Integration of Video Images and Cad Wire... (by )
  • Analysis of the Performance of a Laser S... (by )
  • Calibration and Accuracy Analysis of a F... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.