Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/43206
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Campo DCValorIdioma
dc.creatorMancini, Marcelo-
dc.creatorWeindorf, David C.-
dc.creatorMonteiro, Maria Eduarda Carvalho-
dc.creatorFaria, Álvaro José Gomes de-
dc.creatorTeixeira, Anita Fernanda dos Santos-
dc.creatorLima, Wellington de-
dc.creatorLima, Francielle Roberta Dias de-
dc.creatorDijair, Thaís Santos Branco-
dc.creatorMarques, Francisco D'Auria-
dc.creatorRibeiro, Diego-
dc.creatorSilva, Sérgio Henrique Godinho-
dc.creatorChakraborty, Somsubhra-
dc.creatorCuri, Nilton-
dc.date.accessioned2020-09-25T18:34:49Z-
dc.date.available2020-09-25T18:34:49Z-
dc.date.issued2020-10-
dc.identifier.citationMANCINI, M. et al. From sensor data to Munsell color system: machine learning algorithm applied to tropical soil color classification via Nix™ Pro sensor. Geoderma, [S.I.], v. 375, Oct. 2020. DOI: https://doi.org/10.1016/j.geoderma.2020.114471.pt_BR
dc.identifier.urihttps://doi.org/10.1016/j.geoderma.2020.114471pt_BR
dc.identifier.urihttp://repositorio.ufla.br/jspui/handle/1/43206-
dc.description.abstractSoil color has historically drawn humans’ attention, although its definition is somewhat subjective. It is correlated with several soil attributes and it allows for inferences about several soil aspects. New proximal sensors, such as the Nix™ Pro color sensor, can determine soil color values, but its correlation with the widely used Munsell soil color chart (MSCC) has yet to be investigated. This work aimed to train machine learning models using the Random Forest (RF) algorithm to predict each notation of MSCC chips from data extracted by the Nix™ Pro sensor, test the model’s accuracy by evaluating whether it can identify MSCC chips using a brand-new and a dirty MSCC, and compare model predictions with soil color classifications made by the human eye. Additionally, MSCC data obtained via Nix™ was compared to Munsell renotation data to assess the color detection accuracy of the sensor. Prediction models were calibrated by scanning every MSCC chip (437 in total) in triplicate. All validation samples were excluded from model calibration. Accuracy of the predictions of MSCC notation reached overall accuracy and Kappa index values of 0.93 for the brand-new MSCC and of 0.70 for the dirty MSCC. Soil color classification by human eye had little agreement with the predicted MSCC notation, as expected due to the variable conditions affecting soil color conventional determination in the field. Color difference was calculated by the Euclidian distance (ΔE*ab) between three color stimuli in the CIELAB color space. The mean ΔE*ab between Nix™-provided data and renotation data was 2.9, demonstrating high color detection accuracy. The Nix™ Pro color sensor allows for assessment of accurate color data. When applied together with machine learning algorithms, Nix™ Pro provides a reliable determination of soil color classification equivalent to MSCC in an easily reproducible, rapid, inexpensive and non-subjective way.pt_BR
dc.languageenpt_BR
dc.publisherElsevierpt_BR
dc.rightsrestrictAccesspt_BR
dc.sourceGeodermapt_BR
dc.subjectProximal sensorspt_BR
dc.subjectRandom Forestpt_BR
dc.subjectPrediction modelspt_BR
dc.subjectPedologypt_BR
dc.subjectColor systempt_BR
dc.subjectSensores proximaispt_BR
dc.subjectFloresta Aleatóriapt_BR
dc.subjectModelos de prediçãopt_BR
dc.subjectPedologiapt_BR
dc.subjectSistema de corespt_BR
dc.subjectSolos tropicais - Corespt_BR
dc.titleFrom sensor data to Munsell color system: machine learning algorithm applied to tropical soil color classification via Nix™ Pro sensorpt_BR
dc.typeArtigopt_BR
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