NAME

Image::ExifTool::Geotag - Geotagging utility routines

SYNOPSIS

This module is used by Image::ExifTool

DESCRIPTION

This module loads GPS track logs, interpolates to determine position based on time, and sets new GPS values for geotagging images. Currently supported formats are GPX, NMEA RMC/GGA/GLL, KML, IGC, Garmin XML and TCX, Magellan PMGNTRK, Honeywell PTNTHPR, Bramor gEO, Winplus Beacon text, Google Takeout JSON, GPS/IMU CSV, DJI CSV, ExifTool CSV log files.

Methods in this module should not be called directly. Instead, the Geotag feature is accessed by writing the values of the ExifTool Geotag, Geosync and Geotime tags (see the Extra Tags in the tag name documentation).

NOTES

To take advantage of attitude information in the PTNTHPR NMEA sentence, the user-defined tag GPSRoll, must be active.

AUTHOR

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

REFERENCES

http://www.topografix.com/GPX/1/1/
http://www.gpsinformation.org/dale/nmea.htm#GSA
http://code.google.com/apis/kml/documentation/kmlreference.html
http://www.fai.org/gliding/system/files/tech_spec_gnss.pdf

ACKNOWLEDGEMENTS

Thanks to Lionel Genet for the ability to read IGC format track logs.