Raptor Maps

Flight guidelines for rooftop modeling

Rooftop modeling requires two flights: a mapping flight and an orbital flight.

Equipment

Drone: Capture images with a multi-copter UAS with gimbal mounted camera. A DJI Phantom 4 Pro is the preferred drone for this purpose.

High-resolution camera: 5472×3648 pixel (20 MP) resolution minimum as provided by, for example, the Phantom 4 Pro or Zenmuse X4S cameras.

File format

Images must be JPEG and contain metadata (GPS location, relative altitude, gimbal pitch, gimbal yaw, gimbal roll and timestamp)

MAPPING FLIGHT

Image captured during a mapping flight.

Resolution & altitude:
2 cm/pixel (.8 in/px) at rooftop level
Approximate altitude: 91.4 m (300 feet) above ground level (AGL)
Example: For a building 45 ft tall (13.7 m), approximate AGL of 300ft (91.4 meters)

Gimbal pitch:
Nadir (straight down)
-90 degrees from horizon

Overlap:
75% front overlap, 75% side overlap

Flight area:
The flight path should cover the entire site with a grid flight pattern

Flight path

ORBITAL FLIGHT

Sample image from an orbital flight

Altitude:

  • One set of orbital images at ~100 ft above the rooftop

Gimbal pitch:
Approx. 30 degrees facing toward the center of the site
Do not include any sky in the view or image

Flight area:
Flight should be flown in a circle around entire perimeter of site; fly elliptically for longer rectangular buildings

Updated about a month ago

Flight guidelines for rooftop modeling


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