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Agrociencia
versión On-line ISSN 2521-9766versión impresa ISSN 1405-3195
Agrociencia vol.40 no.1 Texcoco ene./feb. 2006
Fitotecnia
Determinación del estado de crecimiento de cultivos usando la transformada de Hough de las reflectividades del follaje
1Hidrociencias. Campus Montecillo. Colegio de Postgraduados. 56230. Montecillo, Estado de México. México. (pellat@colpos.mx) (mejiasae@colpos.mx)
Se analizan los patrones de reflectividad del follaje de un sistema suelo-vegetación, utilizando diferentes transformaciones de las bandas espectrales del rojo e infrarrojo espectral, primero a uno paramétrico, el cual después es transformado a uno meta-paramétrico. Este último espacio caracteriza en forma total las curvas iso-IAF del follaje de un cultivo en crecimiento. La metodología propuesta se valida usando simulaciones generadas con el modelo SAIL de transferencia de radiación en el follaje.
Palabras clave: Bandas del rojo e infrarrojo cercano; estimación del IAF; patrones espectrales; transformada de Hough
Canopy reflectance patterns in a soil crop vegetation system are studied using different transformations of red and near infrared spectral bands, first to a parametric space, which is transformed into a meta-parametric space. The latter space completely characterizes the LAI (iso-LAI) curves and defines the crop growth stage. This can be used algorithmically to estimate the LAI for a growing crop. The proposed methodology is validated by simulations generated with the SAIL model for radiation transfer in the canopy.
Key words: Red and near infrared bands; LAI estimation; spectral patterns; Hough transform
AGRADECIMIENTOS
Este trabajo fue realizado con el apoyo del CONACYT, convenio CONACYT-2002-C01-41792, del proyecto “Agricultura Asistida por Sensores Remotos”.
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Recibido: Mayo de 2004; Aprobado: Agosto de 2005