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« on: January 15, 2019, 02:23:40 AM »
How high an overlap percentage is too much?
I recently used Drone Harmony to scan in a nearby hill with a tree on it's peak (a phenomenon called pedestal erosion). I decided to redo the following day. One calculates the overlap when programming a mission, though guessing the correct distance from the subject, and gimbal angle can be challenging.
However when I return the google map under the "mission" was missing since I was out of cell phone range, so I used DJO Go's tack orbit, which allows gimbal adjustment and distance on the fly. I clicked away on the photos as fast as I could as it spun around the hill (RAW images on a Mavic 2).
I may have taken too many photos with too much overlap. It is now the second day of processing these images on Photoscan on my new lap top (with pretty close to the latest and greatest CPU, GPU ...and with 32 gigs of RAM). It says I have another day to go for the dense cloud calculation! I have the setting on "high".
Would it work about as well (but calculate much faster) with a setting on "medium"...or should I remove ever other image in the orbits to speed things up on future orbital scans. Perhaps being too lazy to mask out the sky and clouds (along with the moving cloud shadows) also screwed things up (though we'll see how it turns out...maybe tomorrow)?
What should the overlap percentage for obits be?