The next time you go for a hike or head outdoors, bring your digital camera and GPS receiver along. Take photos as you travel.
When you get back to your computer, ExpertGPS will automatically create a map showing the exact location where each photo was taken.
This completely-automatic process, called geotagging, allows you to share photos of your favorite locations with others. The geotagged
photos that ExpertGPS creates (by matching the time each photo was taken with the timestamped track data from your GPS receiver) will appear
over the maps and aerial photos in ExpertGPS, and can also be shared in Google Earth or on geotagging Web sites like Flickr.com.
Geotagging can Improve your Company's Data Collection
Geotagging isn't just a fun way to see your photos on a map - it can be a valuable productivity tool for anyone collecting data in the field.
We've written a white paper entitled Data Collection with a Digital Camera and GPS Receiver that shows how you can
rapidly capture and collect data using a low-cost digital camera and GPS receiver.
Photo Geotagging Tips
For best results, you should synchonize your digital camera's clock to GPS time prior to taking photos. Check
the camera's clock time every few months for drift.
Set your GPS to record track points on a frequent basis. The more trackpoints you record, the better your
geotagging results will be.
To geotag your photos, do the following:
Confirm that your camera's clock is synchronized to the time displayed on your GPS.
Turn on your GPS receiver, wait for a solid lock on 4 or more satellites, and ensure that it continues to maintain
good satellite reception while you take photos. You can place your GPS in a jacket pocket or backpack - you will not need
it in hand while photographing.
Take your photos. There is no need to mark a waypoint or do anything special with your GPS at each photo location, other
than confirm that your GPS is recording a continuous tracklog.
When you return to your computer, receive the tracklog from your GPS and save it in GPX format.
Move the photos from your digital camera to a folder on your computer. ExpertGPS will be writing geotagging information
into the photos. Make a back-up copy of your photos before proceeding.