GeoPhotoUTM

GeoFotoUTM records GPS coordinates, compass bearing, altitude, and device tilt into the EXIF metadata of every photograph. Geospatial information is embedded at capture time — no post-processing or manual transcription required.

Built for professionals and field technicians in archaeology, paleontology, environmental assessment, baseline studies, cadastral surveying, topography, geology, and biodiversity monitoring.

▸ Data recorded per capture

• GPS coordinates (latitude, longitude) with accuracy indicator
• Ellipsoidal altitude, with optional correction via elevation service
• Compass azimuth (magnetic or true north)
• 3D orientation: heading, pitch, and roll
• Automatic UTM conversion (zone, band, hemisphere)
• Timestamp with time zone
• Standards-compliant EXIF metadata

▸ Configurable overlay

Composites geospatial data onto the captured image. Each element has independent visibility, position, and styling:

• Coordinates, altitude, azimuth, tilt, date, and time
• Institutional logo and user-defined tags
• 12 compass rose variants
• Configurable typography, colors, backgrounds, borders, and opacity
• Exportable as .geofoto template for team-wide standardization

▸ Projects and organization

• Captures organized by project with metadata
• Gallery with filters by date, tags, favorites, and spatial selection
• Customizable file names with reorderable components
• Bulk rename
• Overlay restyle on existing photos without altering the original
• Side-by-side comparison: distance, time difference, altitude, and heading

▸ GIS tools

• Geometry import from KML, KMZ, and GPX
• Polygon editor with area calculation, perimeter, and centroid
• Waypoints and monitoring routes
• Spatial photo selection: by polygon, radius from point, or route corridor
• Track coverage analysis with suggested recapture locations
• Full project export to KMZ with embedded photographs

▸ Precision and capture control

• Averaged GPS to reduce position error
• Manual coordinate entry or map-based selection
• Calibratable compass with signal quality indicator
• Tap-to-focus with AF lock and exposure compensation
• Resolution profiles: Fast (9 MP), Balanced (16 MP), Quality (25 MP), Maximum (48 MP+)
• Simultaneous capture of clean and overlay photo

▸ Map projections

• WGS84 / automatic UTM based on position
• Presets: MAGNA-SIRGAS (Colombia), POSGAR 2007 (Argentina), SIRGAS-Chile 2021, CR05 (Costa Rica), GTM (Guatemala)
• Additional projections via EPSG/ESRI code or custom PROJ string
• Coordinates in decimal, DMS, and projected (E, N)

▸ Authenticity verification

Each photo can include a digital signature certifying it was not altered. Three modes: off, audit, and enforce. The system assigns a confidence level based on capture and verification conditions, with anti-replay protection and audit logging.

▸ Formats

• Coordinates: decimal, DMS, UTM, DMM, MGRS, UPS, Geo URI, WKT, Plus Code, Geohash, Maidenhead
• Images: JPEG with full EXIF
• Geodata: KML, KMZ, GPX
• Reference system: WGS84

▸ Privacy

All photos and metadata are stored exclusively on the device. No data is transmitted to external servers.

Available in Spanish and English. Android 11 or higher.