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. 2021 Oct 27;12:734944. doi: 10.3389/fpls.2021.734944

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Copyright © 2021 Stutsel, Johansen, Malbéteau and McCabe.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Workflow to retrieve plant temperature (T_p) of green vegetation from the thermal infrared (TIR) orthomosaic using an object-based image analysis (OBIA) delineation of the red, green, and blue (RGB) image data, k-mean classification, green–red vegetation index (GRVI) thresholding, and air temperature (T_a).