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, and
       Winplus Beacon text 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, two user-defined
       tags, GPSPitch and GPSRoll, must be active.

AUTHOR

       Copyright 2003-2014, Phil Harvey (phil at owl.phy.queensu.ca)

       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.

SEE ALSO

       "Extra Tags" in Image::ExifTool::TagNames, Image::ExifTool(3pm)