Posted by
Peter Haub on
Jun 08, 2013; 11:14am
URL: http://imagej.273.s1.nabble.com/FW-Help-for-publication-tp5003286p5003292.html
Hi Brad,
your application seems to be not to complicated.
The most important aspect is to align the two images (channels).
Otherwise the points selected in one channel can not be related to the
points of the other channel.
Here is an easy way to do this:
1) Images should have the same size.
In case of your example I used [ Image / Adjust / canvas Size ..] to
adjust the size. ( Do not use the Scale function! )
2) Overlay both images as planes in an RGB image with [ Image / Color /
Merge ].
3) Shifted and aligned the panes interactive with the plugin:
Align_RGB_planes (Gabriel Landini).
You can find it on the ImageJ plugin website.
As a starting point for your macro you could simply use:
getSelectionBounds(x, y, width, height);
IJ.log("X: "+x +" Y: "+y +" W: "+width +" H: "+height);
It will print the center position of the rectangle and points in the
ImageJ log window. Run it after every selection in the image.
The rest is vector math.
Hope this helps.
Peter
On 07.06.2013 21:41, Brad Wakeman wrote:
> Hello,
>
> I'm looking for a way to determine and mark the centre of the rectangle created by using the rectangular selector tool in ImageJ
>
>
>
>
> So that I can use ImageJ to determine the centre of the ring of eye muscles that controls eye movements from patient scans. I need to be able to make a line connecting the centres and then be able to measure the angles of the eye muscles relative to the centre of the muscle cone. (like this:)
>
>
>
> For a study for publication. I'm not a programmer and I need help... Anyone able and interested in making make some kind of plug in to automate this process and be included in the publication? It seems to me that it shouldn't be that difficult for someone familiar with the programming, but it's completely beyond me!
>
> Brad Wakeman BSc, OC(C)
> Department of Ophthalmology/Faculty of Medicine & Dentistry
> Rm 2319, Royal Alexandra Hospital * 10240 Kingsway Avenue
> Edmonton * Alberta * Canada * T5H 3V9
> Telephone: (780) 735-5754 * Fax: (780) 735-5831
>
> Pediatric Ophthalmology and Adult Strabismus Clinic
>
> Room 2-133 CSB, University of Alberta Hospital
> Edmonton * Alberta * Canada * T6G 2G6
> Telephone: (780) 407-6417 * Fax: (780) 407-6681
>
>
>
>
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