Uav Services
Evmolpos provides a wide range of services derived of UAV use, such as aerial photography and video, remote sensing, commercial aerial surveillance as well as various custom applications that can be adapted to the customer’s exact specifications. Evmolpos team has experience in Geographic Information Systems (GIS), global positioning system (GPS) and is qualified in feature extraction, manipulation and provides accurate and orthorectified geo-referenced image data and 3D building models.
Stockpile volume calculation
During recent years, calculating stockpile volumes has been difficult and expensive. Having considered how dynamic our world is, new techniques and methods should be presented in numerous fields. For example, nowadays there are some different options and methods for stockpile volume calculation depending on time, experience and cost. One low cost method, which recently has tremendous growth, is using UAVs.
Besides mapping and photogrammetric applications, UAVs perfectly complies with the needs for mine engineering and in particular volume computation.
Orthoimage
Reliable UAV systems are constantly used during last year in order to create low cost and accurate land images. But UAV systems are of no use without sophisticated data processing.
Evmolpos team has developed a procedure for UAV project planning based on the user requirements, image accuracy, camera specifification, image overlapping characteristics and flight height. This leads to accurate flight planning determination and true orthoimage creation.
3D Modelling
Structure from Motion photogrammetry with Multi View Stereo provides hyperscale landform models using images acquired from a range of digital cameras and optionally a network of ground control points.
The technique is not limited in temporal frequency and can provide point cloud data comparable in density and accuracy to those generated by terrestrial and airborne laser scanning at a fraction of the cost. Structure from motion is also useful in remote or rugged environments where terrestrial laser scanning is limited by equipment portability and airborne laser scanning is limited by terrain roughness causing loss of data and image foreshortening.
The technique therefore offers exciting opportunities to characterize surface topography in unprecedented detail and, with multi-temporal data, to detect elevation, position and volumetric changes that are symptomatic of earth surface processes. Structure from Motion can be placed in the context of other digital methods.