[Insight-users] WaterShed Segmentation of grayscale images

[Neha D]

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Hi All,

I want to use watershed segmentation on raw gray scale images.

currently i am studying this filter usage in software guide of ITK. In that, example uses vector image as input and applies diffusion filter and gradientMaginitude Filter.

Pipeline is used as follows:

caster->SetInput(reader->GetOutput());

diffusion->SetInput(caster->GetOutput());

gradient->SetInput(diffusion->GetOutput());

watershed->SetInput(gradient->GetOutput());

colormapper->SetInput(watershed->GetOutput());

writer->SetInput(colormapper->GetOutput());

For Grayscale RAW images of unsigned  short as input image, 

what filters do I need to use? Also, why do we need to use diffusion filter? What is diffusion of color images? Do I need to use that filter for grayscale images?

Any input on this is appreciated.

Thanks,

Neha

 


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<P>Hi All,</P>
<P>I want to use watershed segmentation on raw gray scale images.</P>
<P>currently i am studying this filter usage in software guide of ITK. In that, example uses vector image as input and applies diffusion filter and gradientMaginitude Filter.</P>
<P>Pipeline is used as follows:</P><FONT face=Courier size=1>
<P align=left>caster-&gt;SetInput(reader-&gt;GetOutput());</P>
<P align=left>diffusion-&gt;SetInput(caster-&gt;GetOutput());</P>
<P align=left>gradient-&gt;SetInput(diffusion-&gt;GetOutput());</P>
<P align=left>watershed-&gt;SetInput(gradient-&gt;GetOutput());</P>
<P align=left>colormapper-&gt;SetInput(watershed-&gt;GetOutput());</P>
<P align=left>writer-&gt;SetInput(colormapper-&gt;GetOutput());</P></FONT>
<P>For Grayscale RAW images of unsigned&nbsp; short as input image, </P>
<P>what filters do&nbsp;I need to use? Also, why do we need to use diffusion filter? What is diffusion of color images? Do I need to use that filter for grayscale images?</P>
<P>Any input on this is appreciated.</P>
<P>Thanks,</P>
<P>Neha</P>
<P>&nbsp;</P><p><hr SIZE=1>
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