The development of a computer vision based and real-time plant tracking system for dot spraying

M. Nørremark; H.J. Olsen; N.W. Andreassen; I. Lund

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The development of a computer vision based and real-time plant tracking system for dot spraying

In: Precision agriculture '09

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M. Nørremark

M. Nørremark
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H.J. Olsen

H.J. Olsen
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N.W. Andreassen

N.W. Andreassen
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I. Lund

I. Lund
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Type:: Chapter

Pages:: 777–784

DOI:: https://doi.org/10.1163/9789086866649_093

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Abstract

Site specific weed control at individual plant level requires very accurate positioning of crop and weed plants within agri- and horticultural fields. Spraying only a single droplet on a leaf of a weed eliminates the leaching of herbicides to the environment, and mechanical weed control in the near proximity of individual crop plants increase revenue in organic production. This paper presents a computer vision based deformable object tracking and positioning methodology using blob analysis at its current developmental stage. The developed instrumentation and methodology enabled tracking and positioning of green objects of the size of weed seedlings with forward speeds up to 1.43 m/s. The image processing was evaluated under controlled conditions and by using a dot-sprayer to target 0.5 µl liquid to green objects placed on soil background, while the integrated ‘smart camera’ and dot sprayer system was in motion up to forward speed of 0.25 m/s. The results showed that the spray liquid could be applied within 3.1 mm (± 3.2 mm SD) accuracy at 0.1 m/s forward speed and the accuracy decreased 4-5 fold when forward speed was increased from 0.1 m/s to 0.25 m/s due to error sources related to the dot sprayer.

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Precision agriculture '09

E-Book ISBN:: 9789086866649

Publisher:: Wageningen Academic

Print Publication Date:: 01 Jan 2009

Subjects
- Life Sciences
  - General
  - Agriculture & Environment

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The development of a computer vision based and real-time plant tracking system for dot spraying

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Precision agriculture '09

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