Re: Alternative to threshold

Posted by ctrueden on Dec 07, 2011; 7:01pm
URL: http://imagej.273.s1.nabble.com/Alternative-to-threshold-tp3682337p3682340.html

Hi,

Is it possible to provide labeling or segmenting according to cracks
> intensity change (cracks have at least sharp slope in the intensity change
> (plot profile))?
>

Did you try "Find Edges" in the Process menu?

You could also try Fiji's Trainable Segmentation plugin for a teachable
algorithm.

-Curtis


On Wed, Dec 7, 2011 at 11:53 AM, kirill8910 <[hidden email]> wrote:

> Hello!
>
> I'm trying to separate the cracks out (picture) as precise as possible.
> Grains on the background make ordinary threshold tricky. On other images
> that I have direction of cracks and grains could be the same, so Sobel like
> operators dont fit unfortunately.
>
>
> Is it possible to provide labeling or segmenting according to cracks
> intensity change (cracks have at least sharp slope in the intensity change
> (plot profile))?
>
> Could you suggest me any plugin or algorithm where I can set this kind of
> criteria for the segmentation.
>
> Thank you!
>
> http://imagej.588099.n2.nabble.com/file/n7071422/cracks.png
>
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>