Ghent University Academic Bibliography

Advanced

Development of a new optical imaging technique for studying the spatial heterogeneity in vegetated streams and rivers

Anke Herremans UGent, Dieter Meire UGent, Peter Troch UGent, Ronny Verhoeven UGent, Kerst Buis, Patrick Meire, Stijn Temmerman and Geert Verhoeven (2011) ECOHYDRAULICS : linkages between hydraulics and ecological processes in rivers, Proceedings. p.159-163
abstract
The interaction of macrophytes, stream flow and sediments results in heterogeneity in vegetated rivers. This process is characterized by the formation of a pattern of macrophyte patches and flow gradients and defines the functionality of the river ecosystem. A one-dimensional model, describing the plant-flow interactions in a simplified way, has previously been established. For the development of a two-dimensional, depth-averaged model, the understanding of the plant-flow interactions is very important. To get more insight in those processes, the input of 2D data with a high spatial and temporal resolution is elementary. Therefore we are developing a new optical measuring technique, using aerial imagery to obtain high resolution data of the different stream characteristics needed to describe the interactions. This paper describes the setup of this optical measuring technique. An off-the-shelve digital camera (Nikon D300s) will be mounted onto a pole or an unmanned aerial vehicle. Due to the low operating altitude, a high spatial resolution can be obtained. After the necessary image geo-referencing, the pixel values captured in the imagery can be converted into physical reflectance values. The interpretation of the latter will enable the extraction of the characteristics needed for the development of the 2D model, which will support us to a better understanding of the ecosystem interactions. All measurements will be repeated regularly through the macrophytes’ growing season to capture the evolution of the growing process. Since the project only started in 2010, many issues have to be explored and further developed, while additional questions may arise. Therefore, the measurement plan and characteristics to be measured might be further adapted during the campaigns.
Please use this url to cite or link to this publication:
author
organization
year
type
conference
publication status
published
subject
keyword
UAV, plant-flow interactions, remote sensing
in
ECOHYDRAULICS : linkages between hydraulics and ecological processes in rivers, Proceedings
editor
Claude Chomette and Johannes Steiger
pages
159 - 163
publisher
Ghent University, Department of Civil engineering
place of publication
Ghent, Belgium
conference name
ECOHYDRAULICS : linkages between hydraulics and ecological processes in rivers
conference location
Clermont-Ferrand, France
conference start
2011-06-15
conference end
2011-06-17
ISBN
9782845165298
language
English
UGent publication?
yes
classification
C1
copyright statement
I have retained and own the full copyright for this publication
id
1854771
handle
http://hdl.handle.net/1854/LU-1854771
date created
2011-07-07 16:53:55
date last changed
2015-06-17 09:48:54
@inproceedings{1854771,
  abstract     = {The interaction of macrophytes, stream flow and sediments results in heterogeneity in vegetated rivers. This process is characterized by the formation of a pattern of macrophyte patches and flow gradients and defines the functionality of the river ecosystem. A one-dimensional model, describing the plant-flow interactions in a simplified way, has previously been established. For the development of a two-dimensional, depth-averaged model, the understanding of the plant-flow interactions is very important. To get more insight in those processes, the input of 2D data with a high spatial and temporal resolution is elementary. Therefore we are developing a new optical measuring technique, using aerial imagery to obtain high resolution data of the different stream characteristics needed to describe the interactions. This paper describes the setup of this optical measuring technique. An off-the-shelve digital camera (Nikon D300s) will be mounted onto a pole or an unmanned aerial vehicle. Due to the low operating altitude, a high spatial resolution can be obtained. After the necessary image geo-referencing, the pixel values captured in the imagery can be converted into physical reflectance values. The interpretation of the latter will enable the extraction of the characteristics needed for the development of the 2D model, which will support us to a better understanding of the ecosystem interactions. All measurements will be repeated regularly through the macrophytes{\textquoteright} growing season to capture the evolution of the growing process. Since the project only started in 2010, many issues have to be explored and further developed, while additional questions may arise. Therefore, the measurement plan and characteristics to be measured might be further adapted during the campaigns.},
  author       = {Herremans, Anke and Meire, Dieter and Troch, Peter and Verhoeven, Ronny and Buis, Kerst and Meire, Patrick and Temmerman, Stijn and Verhoeven, Geert},
  booktitle    = {ECOHYDRAULICS : linkages between hydraulics and ecological processes in rivers, Proceedings},
  editor       = {Chomette, Claude and Steiger, Johannes},
  isbn         = {9782845165298},
  keyword      = {UAV,plant-flow interactions,remote sensing},
  language     = {eng},
  location     = {Clermont-Ferrand, France},
  pages        = {159--163},
  publisher    = {Ghent University, Department of Civil engineering},
  title        = {Development of a new optical imaging technique for studying the spatial heterogeneity in vegetated streams and rivers},
  year         = {2011},
}

Chicago
Herremans, Anke, Dieter Meire, Peter Troch, Ronny Verhoeven, Kerst Buis, Patrick Meire, Stijn Temmerman, and Geert Verhoeven. 2011. “Development of a New Optical Imaging Technique for Studying the Spatial Heterogeneity in Vegetated Streams and Rivers.” In ECOHYDRAULICS : Linkages Between Hydraulics and Ecological Processes in Rivers, Proceedings, ed. Claude Chomette and Johannes Steiger, 159–163. Ghent, Belgium: Ghent University, Department of Civil engineering.
APA
Herremans, A., Meire, D., Troch, P., Verhoeven, R., Buis, K., Meire, P., Temmerman, S., et al. (2011). Development of a new optical imaging technique for studying the spatial heterogeneity in vegetated streams and rivers. In C. Chomette & J. Steiger (Eds.), ECOHYDRAULICS : linkages between hydraulics and ecological processes in rivers, Proceedings (pp. 159–163). Presented at the ECOHYDRAULICS : linkages between hydraulics and ecological processes in rivers, Ghent, Belgium: Ghent University, Department of Civil engineering.
Vancouver
1.
Herremans A, Meire D, Troch P, Verhoeven R, Buis K, Meire P, et al. Development of a new optical imaging technique for studying the spatial heterogeneity in vegetated streams and rivers. In: Chomette C, Steiger J, editors. ECOHYDRAULICS : linkages between hydraulics and ecological processes in rivers, Proceedings. Ghent, Belgium: Ghent University, Department of Civil engineering; 2011. p. 159–63.
MLA
Herremans, Anke, Dieter Meire, Peter Troch, et al. “Development of a New Optical Imaging Technique for Studying the Spatial Heterogeneity in Vegetated Streams and Rivers.” ECOHYDRAULICS : Linkages Between Hydraulics and Ecological Processes in Rivers, Proceedings. Ed. Claude Chomette & Johannes Steiger. Ghent, Belgium: Ghent University, Department of Civil engineering, 2011. 159–163. Print.