I'm seeking to test UAV acquisitioned data, primarily captured by high end digital cameras. I'm an expert in photogrammetry and remote sensing and if you have the capability of acquiring such data, feel free to email. I would be very interested in UAVs for accurate 3D geospatial use.
Have a look at the UAS offerings from Falcon UAV (us), Pteryx UAV (eu) and / or Event 38 UAV. These 3 platforms are very stable, they have long flight duration and great mapping features. We've seen and processed many data sets from these platforms with ease. I would also recommend building a small multi rotor mapping platform based off of the DIYDRONES APM if you are interested in mapping smaller areas / sites. Most systems would start with a 12 mega pixel image sensor like the Canon Powershot, these are great and work well (easy to control with CHDK)
Of course it never hurts to use an imagery sensor like the NEX7 as well.
I appreciate your response. Will research your suggestion.
Thanks, I appreciate the few who understand what I'm seeking.
Thanks for the information. Would a hexacopter be suited for quarries? I'm still in decision mode. I probably will go with a Sony NEX 7. Do you have a screen capture of the camera file? Is it self calibrating or will it require one?. Sorry for all the questions! I'm a certified photogrammetrist just trying to break into the UAS realm.
I started an aerial mapping activity with a low cost Iris+/Sony RX100 20MP solution and it gave me very good results. My concerns is now about time flight limited to 10 min giving me 10 ha coverage, and I am working on a second quadricopter to reach 30 min.
Honestly it was really a trial platform in the begining but it appears I can use it for production. That is a less than 1500 € solution. Concerning camera, the professional Ebee uses even cheaper Canon 12MP. As Marc said, it is preferable to get more pictures than focusing in high resolution (and more costly camera). What I see as an advantage of quadri vs plane is low speed, meaning more pictures. Of course for larger project, a plane is a must. This is my next planned purchase.
Thanks for your insight. Even though I may be an experienced photogrammetrist, I feel like an infant in the UAV arena. Your comments are making me more the wiser in moving forward. Is there a repository of UAV imagery for metric mapping somewhere that can be used solely for testing? I have a suite of photogrammetric software from planning to ortho, DTM, DEM and DSM production. Around 2004, I had an opportunity to produce orthophotography from a predator drone. The systems were lacking IMU, INS and believe or not GPS data. I had to use my creative license to make it materialize. Again, I appreciate your great insight. I'm forging ahead and will take your advice.
Pascal, thanks for your response,
Between Marc and yourself, as I stated before "I feel like an Infant" in this realm. Maybe soon, I'll be able to reach your level of expertise. Now, camera resolution, to me, would seem important if processing 3D models for metrics through semi-global matching algorithms. I read, somewhere that a 1 to 2cm GSD was possible with a NEX5 camera, but now I understand from Marc that the NEX7 is no longer in production. I endeavor to begin with stockpile volumetric computations. I sign and seal volumetric reports by statute in Florida. Is this a requirement from where you operate? My questions seem to be literally all over the map! No Pun Intended.
Thanks again, I'll try to organize my questions a bit better.
Appreciate your response