Forum : Photosynth Lounge

Photogrammetric, Oblique Image Stitching, Pets Dressed in Clothes Photos… this is a place to chat and share stories with your fellow Photosynthers. Not all topics have to be about photography, this is a place to relax and chat about whatever you fancy.


Topic: Does Photosynth use GPS info?

Report Abuse Report Abuse
maltejhmlch (Over 1 year ago)
Hello!
Can anyone tellm e if Photosynth is taking images' gps info into account when analyzing the pictures?
Nathanael (Over 1 year ago)
Hello, maltejhmlch, 

The only time that Photosynth makes use of GPS coordinates in photos' metadata is after all the photo positions have been calculated, relative to each other. The GPS coordinates of all of the photos is then averaged and an automatic geotag is added to the synth.

As you may have figured out based on what I just said, though, Photosynth does not make use of GPS coordinates to figure out where the individual photos are on the map or in relation to each other. The reason for this is that GPS coordinates are often inaccurate. The average distance that latitude-longitude tags are inaccurate by is 40 metres. 

Photosynth's image positioning is purely grounded in computer vision techniques like image feature matching.
You need to be Signed In to add a comment. (Are you new? Sign Up for a free account.)