Differences

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--- eolab:thermal:start [2025/10/14 13:43] – moritz
+++ eolab:thermal:start [2025/11/25 13:40] (current) – moritz
@@ Line 6: / Line 6: @@
   * [[https://copterpro.de/shop/drohnen-komplettsets/djimavic3enterprise/]]
-==== 🎯 Calibration Field Targets ====
+==== Calibration Field Targets ====
   * Prior to + after flight measure targets with handheld thermometer. Or place thermocouples + logger under panels!?
+  * 30x30 cm ?
+  * Unknown emissivity measurement:
+    * [[https://www.calex.co.uk/find-correct-emissivity-setting-infrared-temperature-sensor/]]
   *** High-emissivity**
@@ Line 24: / Line 27: @@
 ==== IR Termometers ====
      * [[https://www.conrad.com/en/p/fluke-566-ir-thermometer-display-thermometer-30-1-40-650-c-contact-measurement-122370.html]]
+     * [[https://www.voelkner.de/products/542871/Fluke-568EX-Infrarot-Thermometer-Optik-501-40-800C-Kontaktmessung.html]]
+     * [[https://www.reichelt.de/de/de/shop/produkt/infrarot-thermometer_568_ir_und_kontakt_-40_bis_800_c-110173]]
      * **Calibration:**
        * https://www.fluke.com/de-de/mehr-erfahren/blog/kalibrierung/infrared-thermometer-calibration
-==== 🎯 Lab Temperature Calibration (potential field use?) ====
+==== Lab Temperature Calibration (potential field use?) ====
   * [[https://www.conrad.de/de/p/voltcraft-irs-350-kalibrator-kalibriert-iso-2236161.html]]
   * [[https://www.messbar.de/kalibrierstrahler-optris-br400-fuer-waermebildkameras]]
   * [[https://www.messbar.de/Optris-BR20AR-Referenzstrahler]]
-==== 🔬 Research Papers ====
+==== Research Papers ====
   * WUR :!: Calibration + Processing
      * [[https://www.sciencedirect.com/science/article/pii/S1569843224005405]]
+   * [[https://www.sciencedirect.com/science/article/pii/S1569843224005405]]
+   * [[https://www.mdpi.com/2072-4292/17/15/2746]]
+   * DJI Thermal Format Conversion
+     * [[https://www.mdpi.com/1424-8220/24/19/6267]]
+   * [[https://www.sciencedirect.com/science/article/abs/pii/S1350449523001998]]
+==== Software / Code ====
+  * [[https://github.com/DanGeospatial/dji_m3t_rpeg_to_tif/]]
+  * [[https://www.dji.com/de/downloads/softwares/dji-dtat3]]
+  * [[https://www.dji.com/de/downloads/softwares/dji-thermal-sdk]]
+  * [[https://github.com/SanNianYiSi/thermal_parser]]
+  * [[https://docs.webodm.net/how-to/process-thermal-images/]]
+  * [[https://webodm.net/thermaltools]]
 ==== 💡 IDEAS ====
@@ Line 43: / Line 62: @@
      * Maybe two? one for low temp one high
-==== Must do's for data acquisition: ====
+==== Must do's for data acquisition ====
+  * [[https://dl.djicdn.com/downloads/zenmuse_xt/en/sUAS_Radiometry_Technical_Note.pdf]]
+==== Leaf Temperature Measurement for Validation ====
+  * Example: [[https://www.implexx.io/temperature/leaf-temperature-sensor/]]
+  * Thermocouple on a clamp
+  * Use thermocouple of IR-Thermometer
+  * 3D-Printed clamp: [[https://www.printables.com/model/974751-clamp-print-in-place]]
+{{:eolab:thermal:phyto-sensor-lt-1m-leaf-temperature-sensor-web.jpg?nolink&400|}}
+==== Field Mission Sheet ====
-   *[[https://dl.djicdn.com/downloads/zenmuse_xt/en/sUAS_Radiometry_Technical_Note.pdf]]
+   *** Pre-Flight**
+     * Record air temperature, relative humidity, wind speed.
+     * Measure true temperature of high-emissivity target (IR thermometer or thermocouple).
+     * Measure apparent temperature of low-emissivity target (reflected sky).
+     * **Set camera:**
+       * Emissivity = 0.98
+       * Reflected temperature = from low-ε target
+       * Atmospheric temp = air temp
+       * RH = measured RH
+       * Image type = radiometric JPEG/TIFF
+   *** In-Flight**
+     * Hover ~10 m for 30 s (thermal stabilization).
+     * Capture targets at start of mission (low altitude, nadir view).
+     * Fly survey (consistent height/speed).
+     * Re-capture targets at end of mission.
+     * Log times, environmental data.
+   *** Post-Flight Processing**
+     * Extract target pixel temperatures.
+     * Apply correction to thermal mosaic.
+     * Validate canopy temps vs spot measurements.