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SERVICES

Drones Serving People

THERMAL & MULTISPECTRAL IMAGING

Hover Solutions is equipped with sensors capable of sampling wavelengths outside of the visible spectrum. In 2018, we added two new multispectral cameras to our fleet: The FLIR Vue Pro R, and the Micasense RedEdge-M.

Thermal

The FLIR Vue Pro R is a 30Hz thermal imaging camera optimized for use on UAVs. We currently carry it on the 3DR Solo drone with a 3-axis stabilized gimbal.

This camera allows us to tune its internal settings to optimize radiant heat readings in a given set of atmospheric conditions, which leads to more accurate contrast and temperature readings. The Vue Pro R is also radiometric, meaning it can perform spot and range temperature readings in real time to an accuracy of about 5 degrees F.

Drones are an asset to a thermographic imaging workflow, allowing operators to obtain readings at optimal angles to capture radiant heat. With a drone, thermographers take non-contact heat readings without ever having to set foot on a roof.

 

Interested and want to know more? Contact us!

Above: An image of a multi-level residential community with thermal differences visible in the Ironbow color pallette.

Left: The FLIR Vue Pro R mounted on a 3-axis gimbal under the 3DR Solo quadcopter UAV.

Multispectral

Hover Solutions gathers multispectral images using the MicaSense RedEdge-M, which uses a global shutter to capture light in five different wavelengths: Blue, Green, Red, Near Infrared (NIR), and Red Edge.

Because it captures five bands of light, we use imagery from the RedEdge-M to construct four different map products:

  • A true-color orthomosaic from the red, blue, and green bands
  • A digital surface model using photogrammetry
  • A Normalzied Difference Vegetation Index (NDVI) map derived from the NIR and Red values
  • A chlorophyll map derived Red Edge band values.

 

Images captured with the RedEdge-M are calibrated against a radiometric reflectance target, and encoded with offsetting information from a top-mounted sunlight sensor to account for changes in solar lighting at the moment of capture.

Top right: The MicaSense RedEdge-M camera mounted on the FireFLY6 VTOL drone.

Bottom right: False-color maps showing red edge, near-infrared, and Normalized Difference Vegetation Index results.

Below: The radiometric target used to calibrate the five bands of the RedEdge camera before and after each flight.