PHOTOGRAMMETRY-MAPPING
ORTHOMOSAIC - 3D MODEL-POINT CLOUD - DIGITAL SURFACE MODEL
Aerial & terrestrial photogrammetry
With the use of unmanned aerial systems as well
as mirrorless cameras and the method of photogrammetry we map areas, building facilities, monuments, archaeological excavations, quarries, industrial facilities, photovoltaic parks , construction sites (generally any construction) and we produce orthomosaics, sections, 3D digital models, point clouds and digital surface models of high accuracy, precision and resolution .
We also undertake the printing of small-scale models using proprietary 3D printers.
Data collection & processing
Bearing in mind that the heart of photogrammetry is the photograph itself, special importance is given from the collection (calculation of correct overlap between them, tilt angle, shooting angle, manual control of exposure, white balance, etc.) to the final photogrammetric process.
Following special techniques such as calibration rods, gcp's, tie points, specific calibration flight patterns, etc. depending on the particularities and requirements of each project, we provide a guaranteed final result.
The photos are always taken in DNG format for maximum data information, which then requires the pre-processing of the photos with specific softwares to highlight the additional information.
It should be noted that we do not use "cloud" processing platforms, instead we use powerful softwares on our computers with full parameterization for the best possible result.
Sample work
3D mapping of X.A.D.A. KEA ISLAND
Land survey in Korinthos
3D mapping Industrial building in Attica
Estate 2D survey in Koropi
3D mapping of photovoltaic park in Oropos
3D mapping of preserved building & O.T. in Athens
Providing a high level of services in a wide range of applications in the field of sUAV (small Unmanned Aerial Vehicles)
Costing
Survey cost depends:
A) Mainly from the number of photos required in a capture. The volume of photos depends on the requested resolution (GSD) & accuracy, the size of the area, the morphology of the terrain (big elevation differences, buildings, etc.) and if we need additional information (more photos) for the creation of a 3D model (3D-Mesh) and/or digital surface model (DSM) and/or digital terrain model (DTM).
So, for example, we have similar costs for an orthomosaic of 50 acres with a resolution of 1.3 cm./pixel to a survey of an area (of similar morphology) of 300 acres with a resolution of 3.4 cm./pixel.
B) by the difficulty of the captured area e.g. if the flight must be under the leafy canopy of trees as in the case of archaeological finds etc..
Deliverables
-
Orthomosaic to the desired geodetic reference system in geo.tif format
-
Orthomosaic in .png/.jpg format
-
Orthomosaic Google KMZ in .kmz format
-
Point Cloud (POINT CLOUD) in .las/.laz/.e57/.dxf/.ply format
-
Digital Surface Model (DSM) in geo .tif format
-
Digital Surface Model (DSM) in .png/.jpg format
-
3D Digital Model(3D-MESH)with high resolution photographic texture(texture)in .obj format as well as in .dxf/.fbx/.3ds/.stl format
-
Detailed Reference Report
-
Presentation Video 4K & 1080p for social media
- 3D models and point clouds are delivered in survey's geodetic reference system as well as in Cartesian.
- Measurements of GCP's are carried out by a Topographic engineer.