The GPS Group uses Inpho from Trimble
Simply put, you need to use the right tools that will get the job done efficiently, quickly, and above all, accurately.
Many of the tools available today, especially in the UAV/Drone market, are designed to provide "quick and dirty" orthorectified images and digital elevation models but do not offer the flexibility and tools required to ensure the highest possible quality and fidelity of the output. For that reason, the GPS Group uses Inpho products from Trimble to provides its clients with the assurance that output will be of the highest photogrammetric quality.
Inpho® software is designed to precisely transform imagery into consistent and accurate point clouds and surface models, orthophoto mosaics and digitized 3D features using state-of-the-art photogrammetry techniques. Inpho's modules can be used as a complete system or as individual components which integrate easily into any geospatial production workflow.
Rigorous theory, mathematical modeling, workflow automation and sophisticated software engineering ensure the highest standard of photogrammetric accuracy and productivity. With thousands of implementations, Inpho software is in use globally to standardize and enhance image data for national mapping, forestry, agriculture, mining, utility and energy, urban development, defense and disaster response.