Cameras: E20 Tv/x | E20 TV/X -pro | ATL oblique | E30Z/x | E90/X | LiDAR
Land surveying with drones is more than taking a few pictures from above.
Surveyors and GIS professionals place the highest demands on their quality and tools.
No wonder many surveyors use our drones for mapping and 3D modelling.
Survey drones consistently achieve results that meet accuracy standards. In comparison with traditional surveying techniques, drones significantly reduce the time, cost and effort required.
Land surveying with drones is more complicated than just taking a few pictures with the drone.
Several steps are required such as preparing ground control points, planning missions and
processing the images you capture with "surveying" software.
What is oblique photography?
Oblique photography is a technique that can be used in 3D modelling. Here images are captured by five lenses. These multiple lenses are mounted together in an array with fixed axis angles.
These images reveal details sometimes overlooked when photographing only vertically, such as features hidden by vegetation or tall structures.
The ATL 102S V3 oblique camera uses a mechanical setup with five cameras in fixed positions in a cross configuration. One camera in the centre is surrounded by four other cameras, front, rear, left and right, equally spaced at 90 degrees. This system places the central camera under
an oblique angle where the "nadir" angle (the point directly below the camera at ground level) is at a known, fixed point in the frame.
3D recording techniques
Surveyors are often tasked with creating high-resolution orthomosaics. These can be constructed using photogrammetric techniques from which 3D models are made by oblique cameras and 3D recording techniques.
With the combination H850-RTK+ATL 102S V3, surveyors have the ultimate surveying solution at their fingertips. In terms of accuracy and efficiency, this is of enormous added value for professionals. Thanks to the ATL 102S V3 oblique camera, surveyors can now create 3D models of their objects more efficiently than ever before.
The benefits of oblique photography
Images captured with an oblique camera (ATL 102S V3) reveal details that are hidden by foliage or tall buildings when viewed vertically.
Oblique photography makes it easier to accurately determine the height of objects compared to vertical aerial photography. Unlike an orthographic setup, where the central camera looks straight down, the oblique system records much more height data.
This also rules out lens distortion in all directions around the focal point, which the orthographic method still sometimes has problems with.
With multiple shots at controlled intervals, the position and relative height information of each dataset can be compared, contrasted and then merged.
to obtain relative elevation information between features in the target area, creating a map with both position and elevation data, which can be displayed as a 3D map of the surveyed area.