How to Make Quality Maps and Image Requirements
CHOOSING THE RIGHT DRONE
For requesting Agremo Analyses, you need drone images captured with the most common commercial drones, both fixed-wing and multirotor.
SENSOR / CAMERA
You don’t need any specific sensor or camera. The analyses work with every available RGB sensor. Agremo analyses also work with specialized sensors like the ones from Micasense or Senterra, NIR, or multispectral cameras.
Agremo can process only stitched images (maps) in GeoTIFF format, not raw ones. Maps are obtained by stitching individual images together using a stitching software solution of your choice.
Agronomists and Ag drone experts recommend starting mapping plants once they have reached the V3 stage or about 5 in height. Also, fly a drone during the middle of the day to avoid shadows on your images and assure good light distribution across the field.
PREVIOUS CROP TREATMENTS & WATERING
In case the plants were treated or watered before mapping, it would be best if the entire field was treated (not just part of the field), as these actions may have an impact on factors like color and canopy, which could affect the accuracy of the results.
FRONT & SIDE OVERLAP
To achieve 0.4-1 in per pixel, choose an 80% front overlap and a 75% side overlap, or try different settings that work for your drone and sensor. If you need a better image quality with more details (to spot plant stress or diseases on small plants for example), increase the side overlap accordingly.
Altitude always depends on the sensor you’re working with and how detailed the images have to be for the particular case. Ag drone experts recommend flying between 165-245 ft.
Flying speed is connected to the flying altitude and is usually set to 4-10 MPH.
Generally, it’s okay to fly both during sunny and overcast conditions, as long as the light is distributed evenly on the field. Experts recommend starting mapping either when clouds cover the entire field or when there are no clouds at all.