"You're using the right methods but technology isnt there yet for "tight" elevation readings. I'm waiting on affordable LiDAR systems to map the ground but the prices need to go down drastically.
Have you tried overlaying your images on top of DEM…"
"I will never send a shipment by UPS. I've gotten so many of my online items damaged upon arrival... it takes weeks to get serviced for their mistakes and in the end everyone is unhappy. For Canada or US shipments, PLEASE use Canada Post or USPS."
"Nice to know Ric! Its a bit windy here as well... at least you have all that empty room to fly around in... I have to travel outside of Calgary to test these planes out. Have you gotten a UAV to fly on autopilot yet?"