Smathermather's Weblog

Remote Sensing, GIS, Ecology, and Oddball Techniques

Posts Tagged ‘Photogrammetry’

Moar kite flight pics

Posted by smathermather on April 27, 2015

        

Posted in 3D, Bundler, Image Processing, OpenDroneMap, OpenDroneMap, Optics, Photogrammetry, PMVS, UAS | Tagged: , , , , , , , , , | Leave a Comment »

Kite flight (too windy for balloons, ahem “aerostats”)

Posted by smathermather on April 20, 2015

Inflation of aerostat

The aerostat hanger.

The end of the string.

The 9-footer is just so stable. But not enough wind to lift the cameras this day.

And so we send up the 16-foot workhorse. See that little dot? That’s the camera array.

The 16-footer flew nice and vertical, but pulled really hard. Processed images to follow soon.

Canon S100s from Kaptery — the silver one is an NIR adapted one; the black one is RGB color.


Edit: forgot the camera array:

CIR image from balloon:

IR image from the flight.

IR image from the flight.

Posted in 3D, Bundler, Image Processing, OpenDroneMap, OpenDroneMap, Photogrammetry, PMVS, UAS | Tagged: , , , , , , , , , | Leave a Comment »

Getting Bundler and friends running — part deux

Posted by smathermather on May 6, 2014

In my previous post on Getting Bundler and friends running, I suggested how to modify an existing script to get Bundler and other structure from motion parts/pieces up and running.  Here’s my follow up.

Install Vagrant and VirtualBox.

Download (or clone) this repo:

https://github.com/OpenDroneMap/odm-vagrant

Navigate into the cloned or unzipped directory (on the command line), run

vagrant up

Go have a cup of coffee. Come back. Run

vagrant ssh

Congratulations. You have an Ubuntu machine capable of all sorts of StructureFromMotion / OpenDroneMap goodness.
Next: A tutorial on how to use the tools you just compiled… .

Posted in 3D, Bundler, Drone, Photogrammetry, PMVS, UAS | Tagged: , , , , , , , | 5 Comments »

Getting Bundler and friends running

Posted by smathermather on April 27, 2014

Anyone who has jumped down the rabbit hole of computer vision has run into dependency h*ll getting software to run.  I jumped down that hole again today with great success that I don’t want to forget (these directions are for Ubuntu, fyi).

First, clone BundlerTools:

https://github.com/qwesda/BundlerTools

This will download and compile (almost) everything for you, which is a wonderful thing.  The one exception is graclus.  This doesn’t have a direct download access anymore– you have to register, and then you will receive and e-mail with the download. So, to get the BundlerTools to work, you will need to post this someplace web accessible.  Then open and modify install.sh (https://github.com/qwesda/BundlerTools/blob/master/install.sh) and change the following line (128)

graclus.tar.gz https://www.topoi.hu-berlin.de/graclus1.2.tar.gz

to match your new download location.

Now change install.sh to executable:

chmod 700 install.sh

and run

./install.sh

Posted in 3D, Bundler, Drone, Photogrammetry, PMVS, UAS | Tagged: , , , , , , , | 1 Comment »

Inventorying linear assets– really high resolution orthos

Posted by smathermather on April 5, 2014

I have been contemplating all sorts of varied uses of Structure from Motion techniques. One of those outputs, in addition to using sUAVs (drones) is just to orthorectify and generate 3D meshes from ordinary photos. This has really great potential for linear assets like streams and rivers, trails and roads. We’ll have to being to contemplate how we’ll use (and summarize!) the incredible amount of data and information that will suddenly be available to us, e.g. this subset of an orthophoto of a multi-purpose trail:

Screen shot of orthophoto showing readable text: "Be courteous give notice when passing"

 

Posted in 3D, Drone, Image Processing, Optics, Photogrammetry, UAS | Tagged: , , , , | Leave a Comment »