GeoPhoto

GeoPhoto addresses a common workflow gap for high-precision drone operators: converting ellipsoidal heights (the Z reference used by GNSS systems) to NAVD88 elevations. Previously, this required exporting log files and performing the conversion in a separate tool.

While many image processing applications support geoid-based conversions, they typically rely on global geoids that are less accurate in the US. GeoPhoto uses Geoid12 or Geoid18 — NGS products built from ground-level measurements — which provide significantly better accuracy for US-based projects.

The software reads location metadata (EXIF) from a folder of drone images (e.g., from a Mavic 3 Enterprise or Matrice 350 RTK/Zenmuse P1), applies the appropriate geoid separation at each photo's XY position, and writes the corrected elevation back into each image's metadata. Original photo data is otherwise untouched. Processed files are renamed to indicate they've been adjusted, and a log file is generated. An internet connection is required for license validation and NGS server access.

Request a Seiler GeoPhoto License

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