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How to calculate the image footprint of a drone?
In combination with the height of the drone, these two camera-parameters determine the final image footprint. For more on aspect ratios, see this post which recommends using the native aspect ratio for any given camera. Caveats: ! These equations assume the camera to be perpendicular to the ground and don’t account for lens distortion.
How to calculate the height of a drone?
To flip this around, the other equation we needed for this project was to determine the height we needed to fly the drone, given a specific image footprint i.e. given (A), calculate (x). This is straightforward, since it means we just need to make (x) the subject, as opposed to (A), in equation (5).
What’s the best way to orientation a drone?
Finally, rotate the drone until it’s facing you and hold it still in the air. Keep that mental model in mind – use the lights as a cue to remember which way the drone is facing. If you’re anything like me, this one will give you the absolute willies.
How to analyze drone image and error range?
To analyze resolution and error range of drone images taken by a popular drone, Phantom 3 Professional, total 11 ground control points were selected in the area (Fig. 2) and coordinates of the points were identified (Table 2 ).
What should be included in a drone imagery project?
Each time an organization gathers imagery, the result is a project that includes the single-frame images gathered by the drone, any products derived from the drone-acquired images, and metadata associated with both data capture and post-flight processing.
Where does drone imagery go in ArcGIS Pro?
In the Image Collection window, under the Sensor Type drop-down menu, choose Generic, as the imagery was collected with an RGB camera. Click the Add button to browse to and select the imagery folder. Most modern drones store GPS information in the EXIF header.
Why do we need to know about building footprints?
Building footprints is a required layer in lot of mapping exercises, for example in basemap preparation, humantitarian aid and disaster management, transportation and a lot of other applications it is a critical component.Traditionally GIS analysts delineate building footprints by digitizing aerial and high resolution satellite imagery.