Bible Meadow first analysis

On Saturday 21st January 2015 an aerial drone survey was carried out over Bible Meadow, Holt, using a DJI Phantom 3 standard drone. A flight plan was created on Dronedeploy and 107 geo-referenced images were produced.

Below are the first set of results to show you the type of analysis we can do from the images the drone produces.

Analysis.
I will let you draw your own conclusions but I can see:

1. the area is a bowl shape dipping by 3m from the centre to the edge of the analysis
2. the small field boundary shows well on some analysis
3. there are some lines in the main field that look to be at right angles to each other.  They show on the elevation so must be a physical feature.  Field drains would be an obvious one, but I am not sure

enjoy C

Dronedeploy

Flight plan used to automatically survey Bible Meadow

The images are uploaded by the Dronedeploy app and below is some of the output.

107 photos stitched together to produce a Georeferenced, orthorectified map  - accurate to with a cm. This will automatically drop into place on Google Earth

Elevation model.  think contours, blue is low red is high.  If a feature shows in this analysis then it is a bank or ditch.  Of course the hedge line shows up in yellow/red as high ground

NDVI crop health analysis - looks at vegetation with red/green/blue filters.  may be like crop marks but not visible to the naked eye

A different setting for crop health analysis - looks at vegetation with red/green/blue filters.  may be like crop marks but not visible to the naked eye

3D model of the landscape which can be used as a starting point for further anaysis

Pix4mapper

I used a second software called Pix4mapper which is a free photogrammetry software.  It can be used as many times as we want.  It produces a 3D model and lets you preview the overhead shot and elevation model,

Global Mapper

Very expensive program, but you can do some work with the free version.

Contour map 1m - can set to smaller inervals