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Infra-Red thermal image analysis for grapevines

AutorPoblete-Echeverría, C.; Fuentes, S; De Bei, R.; Ortega-Farias, S.; Diago, Maria P. ; Tardáguila, Javier
Palabras claveMATLAB® programming
Image analysis
Remote sensing
Climate change
Fecha de publicación2013
EditorInstituto Nacional de Investigação Agrária e Veterinária (Portugal)
CitaciónCiência e Técnica Vitivinícola 28(1): 738-743 (2013)
ResumenInfrared thermal images (IRTI) have been used for grapevine research since the early 90’s. Even though its promising results in the assessment of canopy stomatal conductance and plant water status, from the beginning and recent research publications, it has not been fully applied on a commercial scale yet. It is believed that the bottleneck for this technology is the lack of reliable automation tools for IRTI analysis. Accurate and reliable automation technique s will allow the use of this technique to assess the spatial variability of physiological processes within the canopy using infrared cameras mounted on moving vehicles, drones, octocopters or robots. Automated analysis systems are requirement of The Vineyard of The Future initiative, which is an international effort to establis h fully monitored vineyards in the most prominent viticultural and winemaking areas in the world. In this work, a semi-automated IRTI analyses performed using a code written in MATLAB® for estimate dry and wet references excluding non-leaf temperatures was compared with evaporimeter (EvapoSensor, Skye Instruments Ltd, Powys, UK) measurements used to provide dry and wet references from IRTIs. Results obtained from this research (grapevines cv. Tempranillo) showed good and statistically significant correlations between temperatur e references obtained from IRTI analysis and measured values. This work constitutes one additional step forward to the implementation of thermal imaging as an automated routine technique for physiological vineyard assess ment from proximal sensing and unmanned aerial vehicles (UAV) platforms.
DescripciónTrabajo presentado en el 18th International Symposium of the Group of International Experts of vitivinicultural Systems for CoOperation (GIESCO 2013), celebrado en Oporto del 7 al 11 de julio de 2013.-- Número fuera de serie.
URIhttp://hdl.handle.net/10261/147581
Identificadorese-issn: 2416-3953
issn: 0254-0223
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