Posts Tagged ‘gps’

GPS Logger format GPX is now supported

April 6th, 2012 Comments off

phTagr 2.2 is on the way. While fixing and testing the code phTagr added support for GPX tracks. GPX is a great GPS exchange format which is also the export format of Android App OpenGPSTracker. Just record your day trip with OpenGPSTracker and geo tag your photos using a your Android phone! That’s a great news!

There is also now an option in the backend to set the time offset for GPS tracks if your photos are not taken in UTC. This options helps you to synchronize the GPS tracks taken UTC with your local time of your camera.

Happy Easter!

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New GPS input filter

December 3rd, 2008 Comments off

Recently a new input filter for GPS data was added to phTagr. Now, NMEA files from GPS logger such as Sony’s GPSCS1 can be imported directly and adds the GPS coordinates of the images. Combined with Google Maps it adds a nice feature to the gallery to locate your image inside the map.

The GPS coordinates are exported to the EXIF header as GPSLatitude, GPSLatitudeRef, GPSLongitude, GPSLongitudeRef values on the next meta data sync.

While the GPS data are saved in UCT, your timezone of your image might be a different one. The current implementation has a static time offset of two hours (UCT+2), but a special option should be implemented soon. Also an import filter for KML files would be a nice option.

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Google Maps and RSS

May 24th, 2008 Comments off

phTagr supports now Google Maps and RSS feeds! Click here for a demo of the Google Map integration. To enable Google Maps you have to set the Google Maps key in Preference/System from the admin account.

The geo meta data is extracted from new images using Exif tags GPS Latitude and Longitude. I have written a small PHP tool gpssync (available here) which extracts the GPS position of an NMEA file (e.g. from the GPS tracker Sony GPS CS1). It estimates the position by linear interpolation and saves the GPS position using exiftool. Call “./ -g WG20080504135002.log *.jpg” to synchronize the geo positions to your images.

The phTagr image explorer provides now a RSS feed for new (public) images where users can subscribe to it to be informed about new images automatically. You can add the RSS feed (found here) to your favorite RSS reader (e.g. Thunderbird) and wait for new published images. You never need to visit the gallery again to check for new content!

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