of the canopy, and a hyperspectral image contains significant attributes on plant reflectance or spectral characteristics. The fusion of these two provides a better and more robust estimate of forestry variables. LiDAR can also be used on different platforms. According to professor Estraviz, the highest demand at the moment is by forestry companies using piloted airplanes, generating clouds with
TEC N O LO G I A | T EC HN OLOG Y
Crédito: Divulgação
o LiDAR e outros sensores como os hiperespectrais, fornecem informações valiosas para caracterizar as florestas no estande, na parcela e no nível das árvores. Ainda, os dados do LiDAR oferecem potencialidades para analisar propriedades estruturais do dossel, enquanto uma imagem hiperespectral contém atributos significativos de refletância de plantas ou características espectrais. A fusão dessas duas modalidades fornece
a density of 5 to 20 points per m2. These surveys help calibrate and raise the accuracy of conventional measurements done in inventory sampling. Small-scale UAV (Unmanned Aerial Vehicle) flights with scanning tools are becoming more common for surveys above the canopy, and some companies use portable equipment for ground survey under the canopy.
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