Uncooled Thermal Camera Calibration and Optimization of the Photogrammetry Process for UAV Applications in Agriculture
Krishna Ribeiro-Gomes, David Hernandez-Lopez, Jose F Ortega, Rocio Ballesteros, Tomas Poblete, Miguel A Moreno
Sensors | MDPI | Published : 2017
The acquisition, processing, and interpretation of thermal images from unmanned aerial vehicles (UAVs) is becoming a useful source of information for agronomic applications because of the higher temporal and spatial resolution of these products compared with those obtained from satellites. However, due to the low load capacity of the UAV they need to mount light, uncooled thermal cameras, where the microbolometer is not stabilized to a constant temperature. This makes the camera precision low for many applications. Additionally, the low contrast of the thermal images makes the photogrammetry process inaccurate, which result in large errors in the generation of orthoimages. In this research, ..View full abstract
Awarded by Spanish Ministry of Education and Science (MEC)
The authors wish to express their gratitude to the Spanish Ministry of Education and Science (MEC) for funding the project AGL2014-59747-C2-1-R (co-funded by FEDER) and to the IBRASIL Erasmus Mundus for funding the PhD grant of the first author. Part of these results has been obtained thanks to the funding of the BBVA Foundation with the grant "Beca Leonardo a Investigadores y Creadores Culturales 2017".