Posted by
karo03 on
Dec 10, 2010; 4:01pm
URL: http://imagej.273.s1.nabble.com/Surface-Area-Confusion-tp3686211p3686213.html
Hi, for the yellowish regions it could be helpful to look into the hue h of Lch. h=atan(a,b) or h=atan(b/a) from Lab:
run("Lab Stack"); /* a plugin from ImageJ website */
run("Stack to Images");
imageCalculator("Divide create 32-bit", "b","a");
selectWindow("Result of b");
run("Macro...", "code=v=atan(v)");
Of course Gabriel's remark is valid, as you will see!
Regards
Kasten
Am 09.12.2010 um 18:44 schrieb victoria.gonzalez:
> A couple of people have requested a sample image, so here it is.
> This is the UV channel and the camera/software delineates certain spots in
> yellow that it deems UV damage. We would like to determine the surface area
> of only these particular spots.
>
>
http://imagej.588099.n2.nabble.com/file/n5819009/UV_Overlay.jpg
>
> If anyone has trouble with the image above, shoot me an email and I can
> email you a larger image.
>
> What I have tried doing so far is converting the image to 8-bit, and then
> making it binary and then running "Analyze particles".
>
> I also tried using Adobe Photoshop's magic wand tool and using their
> histogram tool to give me a pixel count of the delineated spots.
>
> Cheers,
> Victoria
>
>
[hidden email]
>
> --
> View this message in context:
http://imagej.588099.n2.nabble.com/Surface-Area-Confusion-tp5817116p5819009.html> Sent from the ImageJ mailing list archive at Nabble.com.
Karsten
[hidden email]