Les GoPro sont décalés les uns des autres de 72° ce qui permet de couvrir les 360°. Le déclenchement des 5 Go Pro se fait à une seconde d'intervalle. Le poids total des 5 Go Pro est de 495 grammes
Résultats obtenus
http://www.photoshipone.com/Desert_1.mov
http://www.photoshipone.com/Hayden_Mill_1.mov
http://photoshipone.com/Superstition_Springs_1.mov
Quelques informations complémentaires (voir aussi ce lien)
We have been working for several weeks on a new pano rig for a small multirotor copter. I wanted no moving parts for a pan drive and wanted to acquire all imagery in less than one second. Thus, multiple lenses were required.
Using five GoPro HD cameras in a radial pentagon array (72 degree separation). I have managed to achieve what I was hoping for. Each GoPro has been modified so that they can all be triggered simultaneously.All are wired into a distribution board that carried power for each camera (no batteries) and also the shutter trigger signal.
Weight if the camera array including the mount is 495 grams.
This is the first test shot from the rig. I was stunned at how well all five images aligned in the stitching software (PTGui). Due of course to the very small distance between lens nodal points.
Quality is not as clean as our DSLR/helicopter systems, but this system weighs 4x less and can capture an entire 360 scene in 1 second. The copter can hold a GPS position and altitude accurate to about 2 meters.
With this new system we plan to capture hundreds of aerial pans over the Phoenix, metro area and create an aerial "Google street view" of sorts. As we can capture the GPS position and altitude we shot them at we can integrate them into Google Earth as in these exalmples:
http://www.azchoppercam.com/google-panoramas.shtm
Exciting projects on the horizon!
he copter is a custom built Mikrokopter Octo. We made the coaxial quad frame and carbon fiber center plates.
We also designed and built the camera rig. CNC cut from G10 fiberglass plate.
Total cost for the copter with GPS navigation is about $3,700 USD. The camera mount and distribution board about another $250 USD.
1km range telemetry, radio control system, batteries, charger, etc, the total bill comes to somewhere near $7,000
Then add cameras at about $250 each for HD naked (x5)
I was not aware the SD camera would also shoot 5mp stills. The cameras were provided to us by GoPro for the tests and development, but if I were to purchase them and the SD did in fact shoot the same quality that would certainly save a fair amount of cost.
I too am disappointed in not being able to fix the exposure to be same among all cameras, but perhaps there is a firmware in the future which may allow this.
Overall we're pleased with the system. Tomorrow marks the first paying gig with the system. A series of panoramas at a determined altitudes and a set GPS coordinate for a visualization project for a building developer.
