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A method for counting and classifying aphids using computer vision. Repositório Alice
LINS, E. A.; RODRIGUEZ, J. P. M.; SCOLOSKI, S. I.; PIVATO, J.; LIMA, M. B.; FERNANDES, J. M. C.; PEREIRA, P. R. V. da S.; LAU, D.; RIEDER, R..
Aphids are insects that attack crops and cause damage directly, by consuming the sap of plants, and indirectly,by vectoring microorganisms that can cause diseases. Cereal crops are hosts for many aphid species, includingRhopalosiphumpadi(an economically important aphid species). Recording and classifying aphids are necessaryfor evaluating and predicting crop damage. Thus, serving as a basis for decision making on the utilization ofcontrolmeasures.Itcanalsobeusefultoevaluateplantresistancetoaphids.Traditionally,therecordingprocessis manual and depends on magnification and well-trained staff. The manual counting is also a time-consumingprocess and susceptible to errors. With this in mind, this paper presents a method and software to automate thecounting and...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Aphids; Counting; Classification; Computer vision; Measurement.
Ano: 2020 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1119503
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Speaking Stata: Making it count AgEcon
Cox, Nicholas J..
The count command has one simple role, to count observations in general or that satisfy some condition(s). This task can be useful when some larger problem pivots on counting, especially if count is used with a loop over observations or variables. I use various problems, mostly of data management, as examples. I also make comparisons with the use of _N, summarize, and egen for the same or similar problems.
Tipo: Article Palavras-chave: Count; Counting; Data management; Dropping variables; Finding matches; Research Methods/ Statistical Methods.
Ano: 2007 URL: http://purl.umn.edu/119259
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Vulnerable concentrations of birds in the North Sea OMA
Tasker, M.L.; Pienkowski, M.W..
Tipo: Info:eu-repo/semantics/book Palavras-chave: Birds; Counting; North sea; Water.
Ano: 1987 URL: http://www.vliz.be/imisdocs/publications/261572.pdf
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