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Streamlined approaches for image classification using principal component analysis and hierarchical clustering of extrudates from coffee and sorghum blends. Author(s): HIDALGO CHÁVEZ, D. W.; SILVA, F. L. C. DA; PINTO, R. V.; CARVALHO, C. W. P. de; FREITAS-SILVA, O. This article describes simple methods to group images including principal component analysis (PCA) and hierarchical clustering of principal components (HCPC). Images of expanded and low expanded extru... ... Repository: BDPA Publication year: 2023
Brazilian Soil Classification System. Author(s): SANTOS, H. G. dos; JACOMINE, P. K. T; ANJOS, L. H. C. dos; OLIVEIRA, V. A. de; LUMBRERAS, J. F.; COELHO, M. R.; ALMEIDA, J. A. de; ARAUJO FILHO, J. C. de; OLIVEIRA, J. B. de; CUNHA, T. J. F. Diagnostic attributes and other attributes; Diagnostic surface horizons and diagnostic subsurface horizons; Categorical levels of the system, nomenclature of classes, bases and criteria, concept and d... ... Repository: BDPA Publication year: 2018
Automatic classification of soybean diseases based on digital images of leaf symptoms. Author(s): BARBEDO, J. G. A.; GODOY, C. V. ABSTRACT; This paper presents an algorithm for automatic classification of diseases that produce symptoms in soybean leaves. The algorithm is based on digital image processing techniques and on a modi... ... Repository: BDPA Publication year: 2015
A comparative analysis of ALOS PALSAR L-band and RADARSAT-2 C-band data for land-cover classification in a tropical moist region. Author(s): LI, G.; LU, D.; DUTRA, L.; BATISTELLA, M. This paper explores the use of ALOS (Advanced Land Observing Satellite) PALSARL-band (Phased Array type L-band Synthetic Aperture Radar) and RADARSAT-2 C-band data for land-cover classification in a t... ... Repository: BDPA Publication year: 2012
Ecological classification of Brazilian earthworms: a first attempt using morphological data. Author(s): ANDRADE, D. P. de; BROWN, G. G.; CALLAHAM JÚNIOR, M. A. Repository: BDPA Publication year: 2010
Using linear algebra for protein structural comparison and classification. Author(s): GOMIDE, J.; MELO-MINARDI, R.; SANTOS, M. A. dos; NESHICH, G.; MEIRA JUNIOR, W.; LOPES, J. C.; SANTORO, M. In this article, we describe a novel methodology to extract semantic characteristics from protein structures using linear algebra in order to compose structural signature vectors which may be used eff... ... Repository: BDPA Publication year: 2009
Geographical origin authentication of southern Brazilian red wines by means of EEM-pH four-way data modelling coupled with one class classification approach. Author(s): VINCIGUERRA, L. L.; BÖCK, F. C.; SCHNEIDER, M. P.; REIS, N. A. P. C.; SILVA, L. F. da; SOUZA, K. C. M de; GUERRA, C. C.; GOMES, A. de A.; BERGOLD, A. M.; FERRÂO, M. F. EEM data recorded at different pH values was exploited by MCR-ALS in order to determine qualitative information about Brazilian red wines. In addition, the geographical traceability of wines produced... ... Repository: BDPA Publication year: 2021
Similarity metrics enforcement in seasonal agriculture areas classification. Author(s): SANTOS, M. A. S.; ASSAD, E. D.; GURGEL, A. C.; OMAR, N. Abstract. Accurate identification of agriculture areas is a key piece in the building blocks strategy of environment and economics resources management. The challenge requires one to deal with landsca... ... Repository: BDPA Publication year: 2020
Development of an expert system for classification of Brazilian soil profiles. Author(s): VAZ, G. J.; SILVA NETO, L. de F. da; OLIVEIRA, S. R. de M.; BOTELHO, F. P.; ARAUJO FILHO, J. C. de The Brazilian Soil Classification System (BSCS) is the official taxonomic system for soil classification in Brazil. With the collaboration of professionals from several research and teaching instituti... ... Repository: BDPA Publication year: 2018
Genesis and Classification of Sodic Soils in the Northern Pantanal. Author(s): OLIVEIRA JUNIOR, J. C. de; CHIAPINI, M.; NASCIMENTO, A. F. do; COUTO, E. G.; BEIRIGO, R. M.; VIDAL-TORRADO, P. The simultaneous occurrence of high levels of exchangeable sodium percentage (ESP) and alkalinity in soils imposes restrictions on plant development and affects physical properties such as porosity, b... ... Repository: BDPA Publication year: 2017

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