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General / Re: Will a GPS camera improve the accuracy of DTMs?
« on: November 04, 2013, 06:55:05 PM »
I think having on-camera GPS can't improve results over decent GCP but CAN help to speed up alignment stage and even to avoid not-aligned images. It would also help during GCP marking because model is roughly geo-located prior to entering them, so when you import points, they should appear floating somewhere near their actual position and you just have to drag them on each photo to their right projections.
But let me add that better cameras usually don't boast on-board GPS, so you'd better extracting rough(<2m?) photo coordinates out from the UAV flight log. That makes unnecessary any on-camera crappy(<5m?) gps and gives you better and broader camera choice.
Regards!
Jos?
GEOBIT
But let me add that better cameras usually don't boast on-board GPS, so you'd better extracting rough(<2m?) photo coordinates out from the UAV flight log. That makes unnecessary any on-camera crappy(<5m?) gps and gives you better and broader camera choice.
Regards!
Jos?
GEOBIT