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A device for extracting 3D information of fertilizer trajectories

Bilal Hijazi UGent, Jürgen Baert, Frédéric Cointault, Julien Dubois, Michel Paindavoine, Jan Pieters UGent and Jürgen Vangeyte (2010) CIGR XVIIth World Congress, Proceedings.
abstract
Centrifugal fertilizer spreaders are the most commonly used type in Europe. Their possible inaccuracy results in extra fertilizer being spread, which contributes strongly to environmental imbalance. This imbalance can only be corrected if the correct amount of fertilizer lands in the right place. Accuracy depends on understanding the spreading process from the vane to the soil. This knowledge enables the development of a feedback system that adjusts the spreader settings to the measured spread pattern. The spatial distribution of fertilizer granules on the soil can be predicted by a ballistic flight model based on the measurement of the velocities, directions, pellet size and angular distribution of the pellets. Several models have been proposed to meet this challenge. In an earlier study we proposed a standard camera and a strobe combined with a cross-correlation image-processing algorithm to determine the motion parameters of the pellets at ejection. This system is highly accurate for predicting spread patterns, but only for flat discs, as it only measures the 2D information of the ballistic flight of the pellets. Information on the third dimension will make this model more applicable in practice, as most centrifugal spreaders have concave discs. We developed a 3D image acquisition system based on stereoscopy to characterize the spreading process. Several tests were performed on simulated grain trajectories. Distances and vertical angles were measured with an error of less than 2%.
Please use this url to cite or link to this publication:
author
organization
year
type
conference
publication status
published
subject
keyword
fertilizer, image processing, centrifugal spreader, stereovision
in
CIGR XVIIth World Congress, Proceedings
article_number
CSBE101060
pages
8 pages
publisher
International Commission of Agriculture and Biosystems Engineering (CIGR)
conference name
17th World congress of the International Commission of Agricultural and Biosystems Engineering : Sustainable biosystems through engineering
conference location
Québec, QC, Canada
conference start
2010-06-13
conference end
2010-06-17
language
English
UGent publication?
yes
classification
C1
additional info
abstract available in: Book of abstracts : XVIIth World congress of the International Commission of Agricultural and Biosystems Engineering / Savoie, Philippe ; Villeneuve, Joey ; Morisette, René, eds. - Quebec : Agriculture and Agri-Food Canade, 2010. - (ISBN ; 9782981106216). - p. 254 (see Alternative locations)
copyright statement
I have transferred the copyright for this publication to the publisher
id
1035649
handle
http://hdl.handle.net/1854/LU-1035649
alternative location
http://www.bioeng.ca/publications/meetings-papers?sobi2Task=sobi2Details&catid=21&sobi2Id=466
http://www.bioeng.ca/cigr2010/docs/CIGR2010-book-abstracts.pdf
date created
2010-09-01 15:36:14
date last changed
2010-09-02 10:39:05
@inproceedings{1035649,
  abstract     = {Centrifugal fertilizer spreaders are the most commonly used type in Europe. Their possible inaccuracy results in extra fertilizer being spread, which contributes strongly to environmental imbalance. This imbalance can only be corrected if the correct amount of fertilizer lands in the right place. Accuracy depends on understanding the spreading process from the vane to the soil. This knowledge enables the development of a feedback system that adjusts the spreader settings to the measured spread pattern. The spatial distribution of fertilizer granules on the soil can be predicted by a ballistic flight model based on the measurement of the velocities, directions, pellet size and angular distribution of the pellets. Several models have been proposed to meet this challenge. In an earlier study we proposed a standard camera and a strobe combined with a cross-correlation image-processing algorithm to determine the motion parameters of the pellets at ejection. This system is highly accurate for predicting spread patterns, but only for flat discs, as it only measures the 2D information of the ballistic flight of the pellets. Information on the third dimension will make this model more applicable in practice, as most centrifugal spreaders have concave discs. We developed a 3D image acquisition system based on stereoscopy to characterize the spreading process. Several tests were performed on simulated grain trajectories. Distances and vertical angles were measured with an error of less than 2\%.},
  articleno    = {CSBE101060},
  author       = {Hijazi, Bilal and Baert, J{\"u}rgen and Cointault, Fr{\'e}d{\'e}ric and Dubois, Julien and Paindavoine, Michel and Pieters, Jan and Vangeyte, J{\"u}rgen},
  booktitle    = {CIGR XVIIth World Congress, Proceedings},
  keyword      = {fertilizer,image processing,centrifugal spreader,stereovision},
  language     = {eng},
  location     = {Qu{\'e}bec, QC, Canada},
  pages        = {8},
  publisher    = {International Commission of Agriculture and Biosystems Engineering (CIGR)},
  title        = {A device for extracting 3D information of fertilizer trajectories},
  url          = {http://www.bioeng.ca/publications/meetings-papers?sobi2Task=sobi2Details\&catid=21\&sobi2Id=466},
  year         = {2010},
}

Chicago
Hijazi, Bilal, Jürgen Baert, Frédéric Cointault, Julien Dubois, Michel Paindavoine, Jan Pieters, and Jürgen Vangeyte. 2010. “A Device for Extracting 3D Information of Fertilizer Trajectories.” In CIGR XVIIth World Congress, Proceedings. International Commission of Agriculture and Biosystems Engineering (CIGR).
APA
Hijazi, B., Baert, J., Cointault, F., Dubois, J., Paindavoine, M., Pieters, J., & Vangeyte, J. (2010). A device for extracting 3D information of fertilizer trajectories. CIGR XVIIth World Congress, Proceedings. Presented at the 17th World congress of the International Commission of Agricultural and Biosystems Engineering : Sustainable biosystems through engineering, International Commission of Agriculture and Biosystems Engineering (CIGR).
Vancouver
1.
Hijazi B, Baert J, Cointault F, Dubois J, Paindavoine M, Pieters J, et al. A device for extracting 3D information of fertilizer trajectories. CIGR XVIIth World Congress, Proceedings. International Commission of Agriculture and Biosystems Engineering (CIGR); 2010.
MLA
Hijazi, Bilal, Jürgen Baert, Frédéric Cointault, et al. “A Device for Extracting 3D Information of Fertilizer Trajectories.” CIGR XVIIth World Congress, Proceedings. International Commission of Agriculture and Biosystems Engineering (CIGR), 2010. Print.