High-end photogrammetric applications are where plan (xy) accuracy and heightening (z) accuracy are tightest and include precision mapping, engineering mapping, topographic mapping, deformation mapping among others. The characteristics of imagery captured by the camera mounted on the UAV determines the accuracy output (ie issues of vibrations, crabbing, among others). Is a fixed-wing craft more advantageous than a VTOL craft versus in this application domain?
It really depends what are your objectives, how big your area, how high you are flying, what is the flying environment...etc. I am using both a fixwing and a quadcopter...
Also, if you use a gimble, you can limit the effect of vibrations and the lense effects can be neutralised by post-processing - usually you take a picture of a regular grid and extract the distorsion to reduce it.
If I did not answer your question, try to ask more "precise" questions...
Thanks Christopher,
Are you aware of any published research on the topic ?
Silburn
There is a paper we did with a team of Japanese researchers in which we also compare the use of TLS with different UAV-based SfM methods (it's on ResearchGate)... but the paper is in Japanese... otherwise most papers that do comparisons are using UAV-based photogrammetric against laser or against points collected by DGPS + any-type of data collection instrument... Otherwise I am not aware of any paper on the subject (my knowledge of the field is certainly not exhaustive)... maybe it is yours to write! Best.
Hi
Please see these papers:
http://www.igp-data.ethz.ch/berichte/Blaue_Berichte_PDF/105.pdf
http://researchrepository.murdoch.edu.au/14812/2/02Whole.pdf
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