This is a compressed orthomosaic of a 1-ha plot of mallee bushland near the OzFlux tower at the Calperum station located within the Riverland Biosphere Reserve in South Australia. Environment Institute researchers, Lian Pin Koh and Wayne Meyer, spent a day in the bushland mapping this area.
The images were captured using a 3DR Y6 multirotor flying at 40m above ground level carrying a Canon Powershot SX230 running a 1-second intervalometer script (CHDK-hacked firmware). Photos were geotagged using the mission log from the drone.
It was late in the winter afternoon when this particular flight was done. So the light condition was less than ideal. But the images were still reasonably good. The ground resolution of the images was 1.21 cm per pixel.
Click here for the raw images which are freely available for download.
Comments
Really beautiful, did you made any image processing or those are the rough images.
Wow, down to the small branches on bushes, even in lower light levels. A link to this blog post has been added on the 'Aerial mapping' page to enable faster, easier discovery by those who aren't always online watching the DIYD blog posts. Related information can be found on the 'UAV payload item' page and sub-term pages. More on other 'UAS topics' pages.
Hi Scott, shutter speed was set at 1/1000 for that day, which was slightly cloudy and it was late in the afternoon. I don't use the coordinate information geotagged by the Canon because I find it to be not accurate enough. The easiest workaround is to sync your camera to APM time (GPS time) even before heading out to the field. (Just connect your APM and read the time off the HUD in mission planner.) Then after your mission, you can easily geotag using scripts like the geotagging function in APM, geosetter, etc.