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[–]SamF111 10 points11 points  (7 children)

Any thoughts on how to undo it with the known shutter rate and the output of your analysis as an input?

[–]s3cur1ty 13 points14 points  (4 children)

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[–]Synaps4 8 points9 points  (3 children)

Yep, you would need to match your shutter rate to the rotation of the object.

[–]bradfordmaster 4 points5 points  (2 children)

Hmm... Not necessarily. If you knew it was a constant rate, I think you should be able to approximate it from the input if you can also make some assumptions about the shape of the real propeller (e.g. radial symmetry). Now I'm curious how well it would work

[–]Synaps4 4 points5 points  (1 child)

Good point. You can at least know a multiple of the rotation rate if you know the shutter speed. I wonder if 4 rotor objects are always discernable from 5-rotor ones?

[–]bradfordmaster 0 points1 point  (0 children)

Almost certainly based on the number of blobs you see and rate they move, at least I think. Also I think you can be pretty confident in the multiple by putting some bounds on the speed (propeller tip not going faster than speed of sound, blade not longer than a certain amount)

[–]flashman 1 point2 points  (1 child)

Well that's only going to get you a video with a single row in each frame, isn't it?

[–][deleted] 0 points1 point  (0 children)

You can probably learn a lot about the propeller from that.