Resumo

PAZ-PELLAT, Fernando et al. Determination of growth stage in crops using the Hough transform of canopy reflectance. Agrociencia [online]. 2006, vol.40, n.1, pp.99-108. ISSN 2521-9766.

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.

Palavras-chave : Red and near infrared bands; LAI estimation; spectral patterns; Hough transform.

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