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Map localization
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Once you have a workspace and a scene with your pictures, our
application extract the GPS data from the exif data in the photos. If
a photo doesn't have exif data, then the GPS default value will be 0.

Then you have two options :

- If you switch off the map, then you will only see the renderer in
  the center of the screen once a reconstruction has been done.
- If you switch on the map, you will see some blue points on a map
  corresponding to the location where you take your pictures. If you
  click on a picture in the list, then the map will be centered on the
  point corresponding to this picture.

Points in the map can have different colors corresponding to their
state :

- Blue : the picture is in state *New*
- Green : the picture is in state *Processed*
- Red : the picture is either in state *Rejected*, *Discarded* or
  *Thumbnail*