Tag Archives: geo-tag

Bulk Geo-Tagging of Images Using SCS Timestamped NMEA GGA, HDT and ROV Data

The idea idea of Geo-Tagging or Geo-Referencing images is straight forward; embed time and position information into an image file so that you know when and where the image was taken without having to keep track of the information externally.  It is a technique that is widely used among professional and amateur photographers alike to show where their photos were taken.  Technically speaking, geo-tagging is the process of populating storage bins in the image file’s metadata header with GPS time, longitude, latitude, heading (true or magnetic), and altitude (above or below sea level).  This metadata header is only present on PSD, JPEG and TIFF image types so the techniques discussed here will only work on those files. Continue reading