Case Study #1 · Processed export
A 32.6-acre materials yard,
delivered as six formats and a live portal.
A DJI Terra export went in. What came out is embedded further down this page — the actual portal the client received, with its own survey panel you can open and read. Every figure below is quoted from that portal or from the run's QA report.
The same flight was also rebuilt from the raw photos, with no desktop photogrammetry software in between. See the raw-photo reconstruction
Orthomosaic, DSM, DEM, contours, point cloud, 3D mesh — each in the portal below.
LAZ, downloadable from the portal.
All 2,398 fetched and verified reachable before delivery.
The portal's elevations against the source DSM. A consistency check, not a survey accuracy figure — this flight carried no ground control.
The delivered portal, live
What the portal reports
| Ground resolution | 1.7 cm / pixel |
|---|---|
| Coverage (approx.) | 32.6 acres |
| Contour interval | 1 ft |
| Coordinate system | EPSG:32617 (UTM 17N) |
| Site extent | 538 m × 247 m |
| Elevation range | 13.82 m – 51.85 m · ~38 m relief |
What was produced from it
| Orthomosaic | GeoTIFF · KMZ |
|---|---|
| DSM & DEM | GeoTIFF · KMZ |
| Contours | 1 ft interval · DXF · SHP |
| Point cloud | 76.2 M points · LAZ |
| 3D model | Textured mesh · 2,398 web tiles |
| Report & portal | Branded PDF · the portal above |
The QA pass on this run
Every run is checked before it reaches a portal. This one: 17 checks passed, 2 flagged for a human to look at, 0 failed. The flagged ones are below with the rest — a QA report that only lists what passed is a marketing document.
- PASSAll 6 deliverable types produced — orthomosaic, DSM, DEM, contours, point cloud, 3D model.
- PASS3D tileset healthy: 2,398 / 2,398 mesh tiles reachable.
- PASSThe portal's elevation layer matches the source DSM to 0.0 cm. This is a consistency check between two of our own files, not a measurement against the ground.
- PASSEvery produced deliverable overlaps the orthomosaic correctly.
- WARNDSM coverage 80%. The interior gaps sit over a reflective concrete pad and the retention pond — surfaces photogrammetry cannot resolve. Flagged rather than quietly filled.
- PASSDEM coverage 96% of the site — it interpolates cleanly across those DSM gaps.
- NOTENo surveyed ground control or checkpoints were flown, so no accuracy residuals can be reported for this site. Positioning comes from the aircraft. For design or record work, add checkpoints and a licensed review.