2018 was an incredible year for Geosense, processing over 190,000km² of digital high resolution orthorectified imagery and photogrammetric point clouds to its customers in Europe, Africa, and the Gulf.
This is a result of several key factors which contributed to this achievement – firstly, owning and operating several large format digital sensors, secondly, continued investment in our state of the art production hub capable of processing such volumes, but most of all, a very dedicated professional team of geospatial engineers, technicians, photogrammetrists; a highly energized and focused sales team and an efficient flight and ground operations team. Let’s also not forget some good clear blue-sky weather.
The processed imagery is a combination of normal 3 band RGB or 4 band RGB plus colour infra-red imagery, the vast majority being better than 15cm GSD with much of the urban areas acquired and processed at 5cm GSD. As computer processing software and hardware has developed it enables larger and larger volumes of data to be processed much more efficiently.
All Geosense imagery is captured (unless otherwise specifically requested by customer requirements) with standard 80% forward overlap and a minimum 40% side lap. This enables extremely high precision ‘near’ true orthophoto creation, (imagery with minimal building lean) coupled with very dense point clouds which permit the development of further products such as 3D height models, 3D image mesh, change detection mapping, and by utilising the infra-red, products such as tree mapping and vegetation health indicators can be created.
More and more of our imagery is being captured at 5cm high resolution and as a ‘True’ ortho; that is with very high overlap e.g. 90% forward and 80% side lap, which removes all building lean. The results of such acquisition are impressive true orthorectified imagery. It’s worth pointing out that imagery acquired with high overlap, triangulated and processed with the right software using skilled photogrammetrists and 3D Geospatial Engineers, can produce amazingly accurate 3D point clouds far denser than point clouds derived from LiDAR. For example, a 5cm image will give a 400 point per metre point cloud.
Geosense uses the latest digital cameras both vertical (Ultracam Eagles / Phase One) and oblique (MIDAS), the latest LiDAR technology (Riegl 780i), the latest mobile scanning technology (Leica Pegasus 2) and has large volume processing servers operated by skilled and professionally qualified personnel and geospatial solutions through our global partner network and inhouse consultants.
"As the concept of smart cities develops globally more and more cities are requiring 3D datasets to ensure a sustainable urban future for its citizens." explained Matt Murphy, Managing Director of Geosense. "Geosense will remain at the forefront of digital geospatial technology with continual investment in digital 3D technology."Matt Murphy, Managing Director, Geosense