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Biblioteca(s): |
Embrapa Agricultura Digital. |
Data corrente: |
07/02/2006 |
Data da última atualização: |
17/01/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
CAMARGO NETO, J.; MEYER, G. E.; JONES, D. D.; SAMAL, A. K. |
Afiliação: |
JOAO CAMARGO NETO, CNPTIA; GEORGE E. MEYER, University of Nebraska; DAVID D. JONES, University of Nebraska; ASHOK K. SAMAL, University of Nebraska. |
Título: |
Plant species identification using Eliptic Fourier leaf shape analysis. |
Ano de publicação: |
2006 |
Fonte/Imprenta: |
Computers and Electronics in Agriculture, v. 50, n. 2, p. 121-134, 2006. |
DOI: |
https://doi.org/10.1016/j.compag.2005.09.004 |
Idioma: |
Inglês |
Conteúdo: |
Elliptic Fourier (EF) and discriminant analyses were used to identify young soybean (Glycine max (L.) merrill), sunflower (Helianthus pumilus), redroot pigweed (Amaranthus retroflexus) and velvetleaf (Abutilon theophrasti Medicus) plants, based on leaf shape. Chain encoded, Elliptic Fourier harmonic functions were generated based on leaf boundary. A complexity index of the leaf shape was computed using the variation between consecutive EF functions. Principle component analysis was used to select the Fourier coefficients with the best discriminatory power. Canonical discriminant analysis was used to develop species identification models based on leaf shapes extracted from plant color images during the second and third weeks after germination. The classification results showed that plant species during the third week were successfully identified with an average of correct classification rate of 89.4%. The discriminant model correctly classified on average: 77.9% of redroot pigweed, 93.8% of sunflower, 89.4% of velvetleaf and 96.5% of soybean. Using all of the leaves extracted from the second and the third weeks, the overall classification accuracy was 89.2%. The discriminant model correctly classified 76.4% of redroot pigweed, 93.6% of sunflower, 81.6% of velvetleaf, 91.5% of soybean leaf extracted from trifoliolate and 90.9% of soybean unifoliolate leaves. The Elliptic Fourier shape feature analysis could be an important and accurate tool for weed species identification and mapping. MenosElliptic Fourier (EF) and discriminant analyses were used to identify young soybean (Glycine max (L.) merrill), sunflower (Helianthus pumilus), redroot pigweed (Amaranthus retroflexus) and velvetleaf (Abutilon theophrasti Medicus) plants, based on leaf shape. Chain encoded, Elliptic Fourier harmonic functions were generated based on leaf boundary. A complexity index of the leaf shape was computed using the variation between consecutive EF functions. Principle component analysis was used to select the Fourier coefficients with the best discriminatory power. Canonical discriminant analysis was used to develop species identification models based on leaf shapes extracted from plant color images during the second and third weeks after germination. The classification results showed that plant species during the third week were successfully identified with an average of correct classification rate of 89.4%. The discriminant model correctly classified on average: 77.9% of redroot pigweed, 93.8% of sunflower, 89.4% of velvetleaf and 96.5% of soybean. Using all of the leaves extracted from the second and the third weeks, the overall classification accuracy was 89.2%. The discriminant model correctly classified 76.4% of redroot pigweed, 93.6% of sunflower, 81.6% of velvetleaf, 91.5% of soybean leaf extracted from trifoliolate and 90.9% of soybean unifoliolate leaves. The Elliptic Fourier shape feature analysis could be an important and accurate tool for weed species identification and ... Mostrar Tudo |
Palavras-Chave: |
Análise de forma de folha; Elliptic Fourier; Espécies de planta; Machine vision; Reconhecimento padrão; Shape features. |
Thesaurus Nal: |
Computer vision; discriminant analysis; Leaves. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
Marc: |
LEADER 02359naa a2200277 a 4500 001 1009265 005 2020-01-17 008 2006 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.compag.2005.09.004$2DOI 100 1 $aCAMARGO NETO, J. 245 $aPlant species identification using Eliptic Fourier leaf shape analysis.$h[electronic resource] 260 $c2006 520 $aElliptic Fourier (EF) and discriminant analyses were used to identify young soybean (Glycine max (L.) merrill), sunflower (Helianthus pumilus), redroot pigweed (Amaranthus retroflexus) and velvetleaf (Abutilon theophrasti Medicus) plants, based on leaf shape. Chain encoded, Elliptic Fourier harmonic functions were generated based on leaf boundary. A complexity index of the leaf shape was computed using the variation between consecutive EF functions. Principle component analysis was used to select the Fourier coefficients with the best discriminatory power. Canonical discriminant analysis was used to develop species identification models based on leaf shapes extracted from plant color images during the second and third weeks after germination. The classification results showed that plant species during the third week were successfully identified with an average of correct classification rate of 89.4%. The discriminant model correctly classified on average: 77.9% of redroot pigweed, 93.8% of sunflower, 89.4% of velvetleaf and 96.5% of soybean. Using all of the leaves extracted from the second and the third weeks, the overall classification accuracy was 89.2%. The discriminant model correctly classified 76.4% of redroot pigweed, 93.6% of sunflower, 81.6% of velvetleaf, 91.5% of soybean leaf extracted from trifoliolate and 90.9% of soybean unifoliolate leaves. The Elliptic Fourier shape feature analysis could be an important and accurate tool for weed species identification and mapping. 650 $aComputer vision 650 $adiscriminant analysis 650 $aLeaves 653 $aAnálise de forma de folha 653 $aElliptic Fourier 653 $aEspécies de planta 653 $aMachine vision 653 $aReconhecimento padrão 653 $aShape features 700 1 $aMEYER, G. E. 700 1 $aJONES, D. D. 700 1 $aSAMAL, A. K. 773 $tComputers and Electronics in Agriculture$gv. 50, n. 2, p. 121-134, 2006.
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Embrapa Agricultura Digital (CNPTIA) |
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Biblioteca(s): |
Embrapa Gado de Leite. |
Data corrente: |
24/03/2011 |
Data da última atualização: |
25/03/2024 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
CAMPOS JR. P. H. A.; ASSUNÇÃO, C. M.; CARVALHO, B. C. de; BATISTA, R. I. T. P.; VIANA, J. H. M. |
Afiliação: |
CNPQ; CNPQ; BRUNO CAMPOS DE CARVALHO, CNPGL; UFJF; JOAO HENRIQUE MOREIRA VIANA, CNPGL. |
Título: |
Incidência de atresiamorfológica e detecção de apoptose via caspase-3 durante a mobilização e crescimento folicular ovariano em camundongos. |
Ano de publicação: |
2010 |
Fonte/Imprenta: |
Acta Scientiae Veterinariae, v. 38, p. 347, 2010. |
Idioma: |
Português |
Notas: |
Edição dos resumos da 24a Reunião Anual da Sociedade Brasileira de Tecnologia de Embriões, Porto de Galinhas, 2010. |
Palavras-Chave: |
Atresia folicular. |
Categoria do assunto: |
G Melhoramento Genético |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/882589/1/Incidencia-de-atresiamorfologica-e-deteccao-de-apoptose.pdf
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Marc: |
LEADER 00717nam a2200169 a 4500 001 1882589 005 2024-03-25 008 2010 bl uuuu u00u1 u #d 100 1 $aCAMPOS JR. P. H. A. 245 $aIncidência de atresiamorfológica e detecção de apoptose via caspase-3 durante a mobilização e crescimento folicular ovariano em camundongos.$h[electronic resource] 260 $aActa Scientiae Veterinariae, v. 38, p. 347$c2010 500 $aEdição dos resumos da 24a Reunião Anual da Sociedade Brasileira de Tecnologia de Embriões, Porto de Galinhas, 2010. 653 $aAtresia folicular 700 1 $aASSUNÇÃO, C. M. 700 1 $aCARVALHO, B. C. de 700 1 $aBATISTA, R. I. T. P. 700 1 $aVIANA, J. H. M.
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