photogrammetry

Photogrammetric Surveys

Photogrammetry or 2D Maps is the technology of accurately measuring features on or above the earth’s surface using aircraft(drone) aerial photo images. The ultimate output is the coordinate (X, Y, and Z) position of a specific point, planimetric feature, or three-dimensional visual depiction of the terrain. When large-area mapping is required, photogrammetry has grown into a reliable replacement for ground surveying tasks. It can free survey crews from the most time-consuming and exhausting activities involved in producing topographic maps and Digital Terrain Models (DTMs). Designers can investigate different alignments without needing to collect extra field data because they have more information about existing terrain characteristics.

Photogrammetric Advantages

  • Aerial imagery provides a permanent record of the conditions as they existed at the time the photograph was taken.
  • The imagery can be used to convey information to the general public, local, state or other programs.
  • Terrain data and mapping features can be extracted from stereo image models with little effort and at a low cost.
  • Large area mapping and digital terrain models can be accomplished quicker and at a lower cost when compared to ground survey methods.
  • Photogrammetry can be used in locations that are difficult or impossible to access from the ground.
  • If information must be re-surveyed or re-evaluated, it is not necessary to perform expensive field work. The image stereo model can be re-loaded and measurements verified and/or additional information compiled in a timely manner.

Measurements

With 2D Mapping you can measure everything you need to complete you work fast. You can measure areas, distances and volumes. If you need to check volume of a stockpile you can have that information just with one click. Elevation and all the measurements above can be exportet as JPEG,PDF,PointClouds etc.

Resolution

Resolution of the 2D Maps or orthomosaics can be up to 0.5 cm/px. More images means better quality. It takes more time but it will be at High Resolution.

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