Trimble UAS aerial image data can now be processed into powerful deliverables with the new Trimble Business Center (TBC) photogrammetry module.
The TBC photogrammetry module is based on state-of-the-art Trimble Inpho technology, known for 30 years of digital aerial photogrammetry leadership. For the TBC photogrammetry module, Inpho technology has been customized to the specific requirements of Trimble UAS. The incorporation of specialized computer-vision algorithms produces very accurate results automatically, with minimal manual interaction. This provides a stable and reliable photogrammetric system delivering excellent results without requiring specialized photogrammetry knowledge or experience.
The TBC photogrammetry module works seamlessly with TBC standard and advanced survey modules, making possible to process complete mapping projects including aerial imagery, Trimble VISION imagery, GNSS and total station observations.
For more info visit the TBC website.
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The aerial triangulation process adjusts the aerial photo stations, automatically finding matching tie points in overlapping images to correct their relative positions and orientations. Easily register ground control points (GCP’s) to correct the absolute position and scale of the photo stations. Image adjustment is executed automatically with a single mouse click, requiring only 10 seconds per image to process (incl. camera refinement) and achieving an average re-projection error of about 1 pixel.
Automatically matched tie-points are distributed densely over the complete project, even in challenging low-texture terrain. Additional features such as full camera calibration, automatic quality assurance and blunder removal are available to ensure result quality.
TBC’s “virtual telescope” intersects points from multiple aerial photo stations and/or terrestrial Trimble VISION photo stations, to enable measurement of discrete points. Accurately and efficiently measure the locations of features including buildings corners, tree-tops, and utilities.
Automatically create 3D point clouds from adjusted photo stations. Based on 25 years of technology evolution, TBC’s point cloud generation algorithms are based on state-of-the-art Inpho dense matching and DTM generation software. The fully automatic process adapts parameters to guarantee precision, providing extremely detailed and accurate results at a speed of about 3 sec. per image with about 1-2 pixels height accuracy.
Automatically create 3D digital surface models from adjusted photo stations. A raster DSM created from the generated point cloud is refined using sophisticated interpolation routines, noise filtering, edge modeling and outlier detection to achieve rich detail within surface models.
Automatically create ortho-rectified, georeferenced mosaics from adjusted photo stations. Rigid “True-Ortho” rectification combined with outstanding geometric feature-based seamline-finding and radiometric balancing result in perfect looking seamless ortho-mosaics. Seams are adaptively blended according to image texture analysis. Radiometric single image corrections as well image group corrections are applied for perfect homogeneous colors and intensity, ready for GIS use. The automatic process only takes about 4 sec. per image.