Photogrammetry

What this covers

Photogrammetry

Photogrammetry is the discipline where errors compound quietly. A block adjustment with residuals just inside tolerance produces a DTM that is acceptable, an orthophoto that looks fine, and planimetry that is systematically off in a way nobody notices until it is checked against a survey.

We treat the adjustment as the deliverable that governs everything else. Tie point distribution, control weighting, camera calibration and residual analysis are reviewed properly before any downstream product is generated, and the adjustment report is delivered so you can see what you are building on.

From there: stereo compilation of planimetric features, DTM and DSM generation with real breakline capture, and true-orthophoto mosaics with seamlines placed sensibly and colour balanced across the block. Aerial, satellite and UAV imagery, at project and programme scale.

Scope at a glance

• Aerial triangulation with full residual and camera calibration reporting
• Stereo compilation to a defined feature specification
• DTM and DSM generation with breakline capture and manual editing
• True-ortho and standard orthophoto mosaics with seamline editing
• UAV and satellite imagery processing alongside conventional aerial
• Accuracy verification against independent check points