Area Measurement <HELP>

[Shirley]

Hi guys,

I'm having a difficult time to calculate the area fraction of the particles. The normal method did not work very well on my case due to lots of noise on the background. Despeckle does not help much.

I've attached one image. Can anyone help me?

Thanks!
Shirley

[Shirley]

Here is the image:

[Priyanka Tomar]

Which phase u want to calculate?
On Mar 9, 2016 3:06 PM, "Shirley" <[hidden email]> wrote:

> Here is the image:
> <
> http://imagej.1557.x6.nabble.com/file/n5015829/Screen_Shot_2016-03-09_at_8.png
> >
>
>
>
> --
> View this message in context:
> http://imagej.1557.x6.nabble.com/Area-Measurement-HELP-tp5015828p5015829.html
> Sent from the ImageJ mailing list archive at Nabble.com.
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[Shirley]

Hi Priyanka,

I'm trying to calculate the area fraction of the black particles with enclosed shape. (so the very black particles on the image. Some of them are just black dots; some of them have irregular shapes).

Thanks for your reply :)

[Olivier Burri]

Hi Shirley,



The Weka segmentation plugin seems to yield good results.



Otherwise a laplacian operation of sigma=3, followed by a threshold is also working quite well.



Best



Oli





-----Original Message-----
From: ImageJ Interest Group [mailto:[hidden email]] On Behalf Of Shirley
Sent: mercredi, 9 mars 2016 10:36
To: [hidden email]
Subject: Re: Area Measurement <HELP>



Hi Priyanka,



I'm trying to calculate the area fraction of the black particles with enclosed shape. (so the very black particles on the image. Some of them are just black dots; some of them have irregular shapes).



Thanks for your reply :)







--

View this message in context: http://imagej.1557.x6.nabble.com/Area-Measurement-HELP-tp5015828p5015831.html

Sent from the ImageJ mailing list archive at Nabble.com.



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[Shirley]

Hi Olivier,

Your method is very helpful to me. Thank you so much. I really appreciate your help.

Thanks again!

On Fri, Mar 11, 2016 at 10:54 PM, Olivier Burri [via ImageJ] <[hidden email]> wrote:

Hi Shirley,



The Weka segmentation plugin seems to yield good results.



Otherwise a laplacian operation of sigma=3, followed by a threshold is also working quite well.



Best



Oli





-----Original Message-----
From: ImageJ Interest Group [mailto:[hidden email]] On Behalf Of Shirley
Sent: mercredi, 9 mars 2016 10:36
To: [hidden email]
Subject: Re: Area Measurement <HELP>



Hi Priyanka,



I'm trying to calculate the area fraction of the black particles with enclosed shape. (so the very black particles on the image. Some of them are just black dots; some of them have irregular shapes).



Thanks for your reply :)







--

View this message in context: http://imagej.1557.x6.nabble.com/Area-Measurement-HELP-tp5015828p5015831.html

Sent from the ImageJ mailing list archive at Nabble.com.



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weka1.jpg (254K) Download Attachment
laplacian3.jpg (569K) Download Attachment

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