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Feb 01 2012

Ballon Aerial Photography, GoPro's and Photoscan


I stumbled on the website of a researcher Paul Illsley from Nova Scotia that works on remote sensing and has a hobby of photography.  He has a nice website description of a balloon aerial photography system and techniques for working with different cameras, including a GoPro Hero.  The picture at left shows a model he generated in Photoscan from a balloon survey of a building.  He suggests a technique for removing the GoPro lens distortion that I will definitely have to try out.

Photo source: http://www.paulillsley.com/airphoto/systems/B.jpg

Nov 11 2011

GoPro HERO 2 in hand, now I just need time!

OK, so now I have a new GoPro HERO2 camera shooting 11MP stills at 2fps, I just need the time to go out and test it at our study sites.

First things first, this camera is shooting stills with relatively wide field of view (FOV) and we don't know what that is going to do to structure from motion computation.  The camera shoots in full 170º FOV in 11MP and full or medium 127º FOV at 8MP and 5MP.  Narrow, 90º FOV, options most similar (although still wider) than the other cameras used in our research, are only available in video mode.

Some initial tests with ground subjects on campus have produced somewhat positive results, I think it is too early to tell for sure.

More to follow, when I can get to it.

Oct 29 2011

GoPro HD Hero

Because the Ecosynth team has been looking at purchasing the GoPro Hero2 as our next platform camera I figured I'd share some of the videos I've taken with the GoPro Hero. These videos were recorded over the past summer in Cockeysville Maryland. The body of water that's visible when flying at higher altitudes is loch raven reservoir. The GoPro hero is one of the lightest and least expensive HD Cameras on the market and I'm very pleased with its performance so far. The videos were uploaded in HD remember to turn HD on.

http://www.youtube.com/watch?v=Qz9Sl9JgQRg

http://www.youtube.com/watch?v=J3gTYgJlDuw&feature=related