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Dive into the research topics where João Francisco Gonçalves Antunes is active.

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Featured researches published by João Francisco Gonçalves Antunes.


international geoscience and remote sensing symposium | 2015

Contextual superpixel description for remote sensing image classification

John E. Vargas; Alexandre X. Falcão; J. A. dos Santos; Júlio César Dalla Mora Esquerdo; Alexandre Camargo Coutinho; João Francisco Gonçalves Antunes

The performance of pattern classifiers depends on the separability of the classes in the feature space - a property related to the quality of the descriptors - and the choice of informative training samples for user labeling - a procedure that usually requires active learning. This work is devoted to improve the quality of the descriptors when samples are superpixels from remote sensing images. We introduce a new scheme for superpixel description based on Bag of visual Words, which includes information from adjacent superpixels, and validate it by using two remote sensing images and several region descriptors as baselines.


Ciência da Informação | 1998

Ainfo: a experiência da Embrapa na disponibilização e recuperação de informação

João Francisco Gonçalves Antunes; Stanley Robson de Medeiros Oliveira

AINFO is an information system developed by Embrapa-CNPTIA which allows the integrated management of document data bases and bibliographical processes, providing speediness and flexibility in capturing, managing and information retrieval, besides offering to its users several usage facilities. Starting with its use at Embrapas libraries, it became possible to offer access to the general public to the acquired material as well as thesis and the scientific production of Embrapas researchers. A large and important colectior of national and international periodicals is also available for research in CD-ROM and on the Internet.


Pesquisa Agropecuaria Brasileira | 2012

Estimativa de área de soja por classificação de imagens normalizada pela matriz de erros

João Francisco Gonçalves Antunes; Erivelto Mercante; Júlio César Dalla Mora Esquerdo; Rubens Augusto Camargo Lamparelli; Jansle Vieira Rocha


Revista Brasileira de Cartografia | 2007

GERAÇÃO AUTOMÁTICA DE PRODUTOS DERIVADOS DE IMAGENS AVHRR-NOAA PARA MONITORAMENTO DE ÁREAS INUNDÁVEIS DO PANTANAL

João Francisco Gonçalves Antunes; Júlio César Dalla Mora Esquerdo


Archive | 2004

Extreme Programming by Example

Moacir Pedroso; Marcos Cezar Visoli; João Francisco Gonçalves Antunes


Isprs Journal of Photogrammetry and Remote Sensing | 2018

Big earth observation time series analysis for monitoring Brazilian agriculture

Michelle Cristina Araújo Picoli; Gilberto Camara; Ieda Del'Arco Sanches; Rolf E. O. Simoes; Alexandre Carvalho; Adeline Maciel; Alexandre Camargo Coutinho; Júlio César Dalla Mora Esquerdo; João Francisco Gonçalves Antunes; Rodrigo Anzolin Begotti; Damien Arvor; Cláudio Aparecido de Almeida


Revista Brasileira de Engenharia Agricola e Ambiental | 2017

Mapping of sugarcane crop area in the Paraná State using Landsat/TM/OLI and IRS/LISS-3 images.

Clóvis Cechim Júnior; Jerry Adriani Johann; João Francisco Gonçalves Antunes


Geografia | 2013

Analysis of the vegetation phenology from the Alto Paraguai basin throught the representation of harmonic cycles of EVI/MODIS time-series

João Francisco Gonçalves Antunes; Júlio César Dalla Mora Esquerdo; Rubens Augusto Camargo Lamparelli; Luiz Henrique Antunes Rodrigues


Supplement to: Picoli, Michelle; Câmara, Gilberto; Sanches, Ieda; Simoes, Rolf; Carvalho, Alexandre; Maciel, Adeline; Coutinho, Alexandre; Esquerdo, Julio; Antunes, Joao; Begotti, Rodrigo; Arvor, Damien; Almeida, Claudio (in press): Big earth observation time series analysis for monitoring Brazilian agriculture. ISPRS Journal of Photogrammetry and Remote Sensing, https://doi.org/10.1016/j.isprsjprs.2018.08.007 | 2017

Land cover change maps for Mato Grosso State in Brazil: 2001-2016, links to files

Gilberto Câmara; Michelle Cristina Araújo Picoli; Rolf E. O. Simoes; Adeline Maciel; Alexandre Xavier Ywata de Carvalho; Alexandre Camargo Coutinho; Júlio César Dalla Mora Esquerdo; João Francisco Gonçalves Antunes; Rodrigo Anzolin Begotti; Damien Arvor


Archive | 2017

Discordância global e análise de índices de acurácia para avaliação de mapeamentos de área de cana-de-açúcar no Paraná.

C. Cechim Júnior; Jerry Adriani Johann; João Francisco Gonçalves Antunes

Collaboration


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Júlio César Dalla Mora Esquerdo

Empresa Brasileira de Pesquisa Agropecuária

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Erivelto Mercante

State University of West Paraná

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Alexandre Camargo Coutinho

Empresa Brasileira de Pesquisa Agropecuária

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Jerry Adriani Johann

State University of West Paraná

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Adeline Maciel

National Institute for Space Research

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Clóvis Cechim Júnior

State University of West Paraná

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Lucas Volochen Oldoni

State University of West Paraná

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