Measurement of cotton canopy temperature using radiometric thermal sensor mounted on the unmanned aerial vehicle (UAV)

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dc.contributor.authorChang, Anjin
dc.contributor.authorJung, Jinha
dc.contributor.authorMaeda, Murilo
dc.contributor.authorLandivar, Juan
dc.contributor.authorCarvalho, Henrique D. R.
dc.contributor.authorYeom, Junho
dc.creator.orcidhttp://orcid.org/0000-0001-6870-3771en_US
dc.creator.orcidhttp://orcid.org/0000-0002-2697-5258en_US
dc.creator.orcidhttps://orcid.org/0000-0001-7571-1155en_US
dc.creator.orcidhttps://orcid.org/0000-0001-6870-3771
dc.creator.orcidhttps://orcid.org/0000-0002-2697-5258
dc.creator.orcidhttps://orcid.org/0000-0001-7571-1155
dc.creator.orcidhttps://orcid.org/0000-0001-6870-3771
dc.creator.orcidhttps://orcid.org/0000-0002-2697-5258
dc.creator.orcidhttps://orcid.org/0000-0001-7571-1155http://orcid.org/0000-0001-6870-3771
dc.creator.orcidhttp://orcid.org/0000-0002-2697-5258
dc.creator.orcidhttps://orcid.org/0000-0001-7571-1155
dc.creator.orcidhttps://orcid.org/0000-0001-6870-3771
dc.creator.orcidhttps://orcid.org/0000-0002-2697-5258
dc.creator.orcidhttps://orcid.org/0000-0001-7571-1155
dc.creator.orcidhttp://orcid.org/0000-0001-6870-3771
dc.creator.orcidhttp://orcid.org/0000-0002-2697-5258
dc.creator.orcidhttps://orcid.org/0000-0001-7571-1155
dc.date.accessioned2022-03-23T18:13:09Z
dc.date.available2022-03-23T18:13:09Z
dc.date.issued2020-08-19
dc.description.abstractCanopy temperature is an important variable directly linked to a plant’s water status. Recent advances in Unmanned Aerial Vehicle (UAV) and sensor technology provides a great opportunity to obtain high-quality imagery for crop monitoring and high-throughput phenotyping (HTP) applications. In this study, a UAV-based thermal system was developed to directly measure canopy temperature, skipping the traditional radiometric calibration process which is time-consuming and complicates data processing. Raw thermal imagery collected over a cotton field was converted to surface temperature using the Software Development Kit (SDK) provided by the sensor company. Canopy temperature map was generated using Structure from Motion (SfM), and Thermal Stress Index (TSI) was calculated for the test site. UAV temperature measurements were compared to ground measurements acquired by net radiometers and thermocouples. Temperature differences between UAV and ground measurements were less than 5%, and UAV measurements proved to be more stable. The proposed UAV system was successful in showing temperature differences between the cotton genotype. In conclusion, the system described in this study could possibly be used to monitor crop water status in a field setting, which should prove helpful for precision agriculture and crop research.en_US
dc.description.abstractCanopy temperature is an important variable directly linked to a plant’s water status. Recent advances in Unmanned Aerial Vehicle (UAV) and sensor technology provides a great opportunity to obtain high-quality imagery for crop monitoring and high-throughput phenotyping (HTP) applications. In this study, a UAV-based thermal system was developed to directly measure canopy temperature, skipping the traditional radiometric calibration process which is time-consuming and complicates data processing. Raw thermal imagery collected over a cotton field was converted to surface temperature using the Software Development Kit (SDK) provided by the sensor company. Canopy temperature map was generated using Structure from Motion (SfM), and Thermal Stress Index (TSI) was calculated for the test site. UAV temperature measurements were compared to ground measurements acquired by net radiometers and thermocouples. Temperature differences between UAV and ground measurements were less than 5%, and UAV measurements proved to be more stable. The proposed UAV system was successful in showing temperature differences between the cotton genotype. In conclusion, the system described in this study could possibly be used to monitor crop water status in a field setting, which should prove helpful for precision agriculture and crop research.
dc.identifier.citationChang, A., Jung, J., Maeda, M.M., Landivar, J.A., Carvalho, H.D. and Yeom, J., 2020. Measurement of cotton canopy temperature using radiometric thermal sensor mounted on the unmanned aerial vehicle (UAV). Journal of Sensors, 2020.en_US
dc.identifier.citationChang, A., Jung, J., Maeda, M.M., Landivar, J.A., Carvalho, H.D. and Yeom, J., 2020. Measurement of cotton canopy temperature using radiometric thermal sensor mounted on the unmanned aerial vehicle (UAV). Journal of Sensors, 2020.
dc.identifier.doihttps://doi.org/10.1155/2020/8899325
dc.identifier.urihttps://hdl.handle.net/1969.6/90312
dc.language.isoen_USen_US
dc.language.isoen_US
dc.publisherHindawien_US
dc.publisherHindawi
dc.rightsAttribution 4.0 International*
dc.rightsAttribution 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectuaven_US
dc.subjectunmanned aerial vehicleen_US
dc.subjectradiometricen_US
dc.subjectuav
dc.subjectunmanned aerial vehicle
dc.subjectradiometric
dc.titleMeasurement of cotton canopy temperature using radiometric thermal sensor mounted on the unmanned aerial vehicle (UAV)en_US
dc.titleMeasurement of cotton canopy temperature using radiometric thermal sensor mounted on the unmanned aerial vehicle (UAV)
dc.typeArticleen_US
dc.typeArticle

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