Do this in cmd.exe
for /r E:\DCIM %f in (*.jpg) do @copy "%f" C:\Python27\Scripts\mapillary_tools-master\python\front
or ..\python\side
python remove_duplicates.py -d 3 front/ dupe-front/
This removes photos that are less than three meters from the previous, like when the camera is stopped at a traffic signal. Lower values may give false positives due to GPS creep.