Photogrammetry and DTM
Photogrammetric processing and the creation and correction of digital terrain models.
We perform photogrammetric processing and prepare digital terrain models for long infrastructure corridors.
We correct the ground model after automatic classification and inspect complex terrain, slopes, hydrography and areas of dense vegetation.
The task
Transform survey materials into an agreed spatial base and prepare a digital terrain model suitable for analysing a site or infrastructure corridor.
Input data
The source package is project-specific and may include imagery, positioning data, control information, site boundaries and requirements for the coordinate system and deliverables.
Workflow
- Check the source materials, site coverage and output requirements.
- Perform photogrammetric processing and create or correct surface and terrain models.
- Review difficult areas and prepare the data in the agreed structure.
Deliverables
We provide the terrain or surface models and related materials specified by the task. Resolution, coordinate system, boundaries, formats and file composition are fixed before work begins.
Quality control
We check coverage integrity and representative areas such as terrain breaks, slopes, hydrography, dense vegetation and object boundaries. Automated output is corrected where engineering interpretation is required.