[GRASS-web] Using GRASS to Analyze Construction Site Aerial Images

Markus Neteler neteler at osgeo.org
Mon Dec 19 13:42:04 PST 2016


you reached the Web server related mailing list and not the user list
- some delayed comments below:

On Thu, Nov 17, 2016 at 8:27 PM, Richard D. Klein <Rklein at ceds.org> wrote:
> Folks
> I’m searching for software to analyze a color aerial photo of a construction
> site (like the attached) and determine the percent of the site which is
> covered with vegetation or straw mulch and how much is exposed soil.
> I understand GRASS can do this.

That is generally correct. Ideally the imagery comes as multispectral
dataset, i.e. R, G, B (NIR) separated.
GRASS GIS offers several tools to classify, to perform image
segmentation, as well as machine learning for classification.

> If this is correct is there documentation that describes how to do this
> analysis with GRASS?

Please see for an overview:

and for the methods:


Markus Neteler
http://www.mundialis.de - free data with free software

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