I have DJIP4 Multispectral datasets in the agriculture area.
I have 3 reflectance plates (10%, 20%, 90%) on the ground while the drone was captured.
The Camera and Sun Sensor were also on during the flight.
I would like to process the images with Pix4D, Ag Multispectral.
However, I want to process without Camera information (ISOSpeed, ApertureValue, ExposureTime) and Sun Irradiation (Irradiance, SunSensor).
Question 1: : Would it be possible to select Radiometric Processing → Correction Type: No Correction, while I still want to provide the Reflectance Factor of my Reflectance plates.
Question 2: : If the above answer is not possible. How to delete the Camera and Sun Sensor information from Exif and XMP? I have tried with ExifTool on Window and here are the results:
- ISOSpeed: Can delete
- Aperture: Can delete on (fnumber, ApertureValue, MaxApertureValue) but not on (Aperture)
I am not sure which Aperture value does Pix4D uses for the process.
- ExposureTime: Can not delete, only possible to set to 0.
Irradiance, SensorGain, SensorGainAdjustment, SensorIndex, SunSensor, SunSensorExposureTime, IrradianceExposureTime: Can read, but can not delete:
exiftool -xmp:Irradiance DJI_0011_2020.TIF exiftool -xmp:Irradiance= DJI_0011_2020.TIF
Warning: Tag 'xmp:Irradiance' is not defined Nothing to do.
Question 3: : Which Reflectance Plate (10%, 20%, 90%) is the best (make the best sense) on Agriculture area for Vegetation Indices.
Very thanks in advance for your comments.