Here's a matlab script to automatically compile all geo-tagged images from a directory and all its subdirectories into a Google Earth kml file showing positions and thumbnails
Like most of my matlab scripts, it's essentially just a wrapper for a system command. It requires exiftool for the thumbnail creation (available on both *nix and for Windows). It also needs the (free) Google Earth toolbox for Matlab.
Right now it's just set up for JPG/jpg files, but could easily be modified or extended. As well as the kml file (Google Earth will launch as soon as the script is finished) it will save a matlab format file contining the lats, longs, times and filenames.
Outputs look a little like this (a selection of over 30,000 photos taken in Grand Canyon)
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