Re: Tracking Image Changes with IMAGEJ

Posted by D Hill on Dec 15, 2010; 11:07am
URL: http://imagej.273.s1.nabble.com/Tracking-Image-Changes-with-IMAGEJ-tp3685182p3685191.html

Well I would guess that you would want to look for an edge tracking tool
(fourier transforms), and use the top edge of a dune as a reference. Then I
guess it would be a matter of using trigonometry to calculate distances

Duncan

On Wed, Dec 15, 2010 at 9:54 AM, Gabriel Landini <[hidden email]>wrote:

> On Tuesday 14 December 2010 13:08:17 Catherine Zucker wrote:
> > I'm a high school senior researching dune migration on Mars. I need to
> > measure how many meters the dunes have moved in a certain number of
> months.
> > I've been trying to do this with IMAGEJ, but am finding it difficult.
> Does
> > anyone know a way to track the migration of an entire dune using IMAGEJ?
> > Does anyone have experience with tracking image changes? Thanks!
>
> I have no idea of what the images look like, but I guess that you will have
> some lines that delineate the dunes?
> If so, you could isolate the area that the lines define and use some kind
> of
> distance transform between these. You will need to calibrate the images and
> make sure that the 2 images are aligned (registered) on some other fixed
> landmarks.
>
> Good luck with your project, I wished there were projects like these when I
> was in high school.
>
> Cheers
>
> Gabriel
>