Development of an image analysis system for estimation of weed pressure

A. Ribeiro; C. Fernandez-Quintanilla; J. Barroso; M.C. Garcia-Alegre

Development of an image analysis system for estimation of weed pressure

äºPrecision Agriculture â05

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A. Ribeiro

A. Ribeiro ¹IAI-CSIC, 28500 Arganda del Rey, Madrid, Spain

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C. Fernandez-Quintanilla

C. Fernandez-Quintanilla ²CCMA-CSIC, Serrano 115 B, 28006 Madrid, Spain

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J. Barroso

J. Barroso ²CCMA-CSIC, Serrano 115 B, 28006 Madrid, Spain

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M.C. Garcia-Alegre

M.C. Garcia-Alegre ¹IAI-CSIC, 28500 Arganda del Rey, Madrid, Spain

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Page Range:: 169â174

DOI:: https://doi.org/10.3920/978-90-8686-549-9_021

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The feasibility of implementing site-specific weed management (SSWM) relies on the availability of automatic systems for monitoring weed abundance. A computer based image processing system was developed to allow the user to input digital images of the sampled field and perform a set of pixel-image transformations to compute the percentages of pixels representing weed, crop and soil. Relative weed cover was estimated from these three values. A `weed pressureâ variable was derived in order to rank images into four risk categories. The final objective was to fit herbicide application rates to weed abundance and yield loss risks. This image processing application could be a useful tool for non-expert users to both control each image processing step or automate the whole image transformation. The classification results supplied by the image processing system were compared with those provided by two weed control experts and with objective data on weed density and biomass. The results obtained indicate a high agreement between both artificial and human vision systems.

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Precision Agriculture â05

ISBN:: 9789086865499

åºçç¤¾:: Wageningen Academic

å°å·åºçæ¥æ:: 24 Oct 2005

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  - Agriculture & Environment

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Development of an image analysis system for estimation of weed pressure

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