AVALIAÇÃO DE COMPRIMENTO E DIÂMETRO RADICULAR DO MILHO POR TÉCNICAS DE PROCESSAMENTO DIGITAL DE IMAGENS

Detalhes bibliográficos
Ano de defesa: 2016
Autor(a) principal: Maruyama, Teruo Matos lattes
Orientador(a): Falate, Rosane lattes
Banca de defesa: Fonseca, Adriel Ferreira da lattes, Facon, Jacques lattes, Okida, Sergio lattes, Senger, Luciano José lattes
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: UNIVERSIDADE ESTADUAL DE PONTA GROSSA
Programa de Pós-Graduação: Programa de Pós Graduação Computação Aplicada
Departamento: Computação para Tecnologias em Agricultura
País: BR
Palavras-chave em Português:
PDI
Palavras-chave em Inglês:
DIP
Área do conhecimento CNPq:
Link de acesso: http://tede2.uepg.br/jspui/handle/prefix/139
Resumo: The study of roots is used to monitor and optimize the uptake of water and nutrients. The evaluation of the plant root system by traditional methods is slow, exhaustive, complex and in many cases does not provide the required accuracy. This research aimed to develop a computational method to assist in the assessing of the average diameter and length of root maize. It was developed using Java programming language, JavaCV interface, and OpenCV library, subsequently its accuracy was compared to the traditional methods and the macro IJ_Rhizo accuracy, for measuring the average diameter and length of roots. The tests were performed using images of maize roots with 300 dpi and using images of nylon threads with resolutions of 300 dpi and 600 dpi. The method validation was performed using nylon thread samples with known lengths and diameters. For length measurements, the proposed method obtained coefficients of variation from 0.05% to 3.80% and 0.06% to 9,27%, with 300 dpi and 600 dpi images, respectively. For diameter measurements, the proposed method obtained coefficients of variation from 0.23% to 77.49% and 0.54% to 96,61%, with 300 dpi and 600 dpi images, respectively. The proposed method obtained coefficients of variation lower than traditional methods for length and diameter measurements, and the macro IJ_Rhizo in more than 95% of test cases. Thus, the presented method is shown to be the most appropriate, and with greater accuracy for measurement of average diameter and length of root, among the assessed methods.