Leveling-up project precision and productivity
Combining a high-quality aerial camera system and complementary software for a complete and seamless workflow is mandatory to level up the precision and productivity of photogrammetric projects.
Improved efficiency was evident in a recent mission of a European customer, exceeding expectations. A Phase One 280MP Aerial System (PAS 280) and Trimble Inpho software achieved project deliverables with the highest productivity.
Generating the DSM and DTM using Inpho toolkits
Due to the project’s rural application, the flight was conducted with a 60% overlap and 40% side-lap to rapidly generate a Digital Surface Model (DSM), with sub-pixel accuracy, using the MATCH-T DSM module in Inpho. In city modeling or urban mapping projects, or in areas with high buildings, as well as high-overlapping imagery projects, MATCH-3DX is recommended.
Automatically generated colorized dense point clouds, in sub-pixel accuracy, were filtered to obtain a Digital Terrain Model (DTM) using the DTMToolkit functionality. The standard settings, as default, provided outstanding results, which improved with customized filter settings or interactive modifications.
image: DSM and DTM models created with inpho match-t DSM and DTM toolkit
The combination of high quality Phase One cameras and Trimble Inpho suite increases the level of quality and efficiency in the production lines of any imagery project, from small to large scales.
Orthophoto generation and mosaicking using OrthoMaster and OrthoVista
The OrthoMaster module in Inpho offers a high-performance orthorectification tool, which was able to rectify the images in Orthophotos in less than 1sec./image.
OrthoVista was used to process the final radiometric adjustment, seamline calculation, and mosaicking. Although this Inpho module is well-known for its strong and automatic ratiometry enhancement capabilities, the refinements of this project were no challenge due to the well-aligned radiometry from the PAS280 images.
Image: Orthophotos after image rectification (left) and final orthomosaic (right). Zoomed view in the orthomosaic after radiometric adjustment with seamlines (bottom)
Increased productivity in less time
The project provides a fitting example of a solution using Phase One cameras and Trimble Inpho software for leveling up the productivity in high-quality aerial imagery projects. The image matching results represent the power of MATCH-AT in tie point extraction with solid connectivity in the whole block.
The high-quality imagery of a PAS280 and the well-balanced radiometry across the entire project increases productivity by reducing the time for any additional refinement to the automatic steps in orthomosaic generation in OrthoVista.
Image: Residuals of the lens showing the high quality of the camera
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