Uso de drones en viñedo: ¿cómo afecta la altura de vuelo en la información obtenida de las imágenes multiespectrales capturadas?

  1. Rubén Vacas Izquierdo
  2. Sergio Vélez Martín
  3. Enrique Barajas
  4. José Antonio Rubio Cano
Revue:
Enoviticultura

ISSN: 2013-6099

Année de publication: 2024

Número: 85

Type: Article

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D'autres publications dans: Enoviticultura

Résumé

High–resolution aerial imagery of vineyards obtained from unmanned aerial vehicles (UAVs), offer higher resolution and temporal flexibility. However, current flight regulations and low battery life affect the choice of optimal pixel size (GSD). In multispectral images of crops with partial coverage, such as vineyards, where pixel value differs between soil and vegetation, this aspect is crucial, as the pixel value could be influenced by pixel size. In this work, flight operations were performed at 15 different altitudes with a Micasense Altum sensor payload over a vertically trellised vineyard to compare how different GSDs affect the vegetation index (NDVI). The results show that the optimal GSD depends on: the flight objective, the maximum legal height of 120 m and band alignment in flights below 30 m. An optimal GSD minimizes contamination of pure vegetation pixels (PPVs) by ground cover and improves data collection efficiency.

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