[Insight-users] Image question in program region growing

[Luis Ibanez]

Hi Yingli,


Please look at the SoftwareGuide

   http://www.itk.org/ItkSoftwareGuide.pdf

You will find the answer to your question in
section 4.1.4, "Defining Origin and Spacing"
pdf-page 65.



Just for the record:

                    When you get variable results
in Region Growing just by slightly changing your
sees points, this is an indication that your image
may have a significant amount of noise.

In that case you may find useful to pre-process
the image with any of the edge-preserving smoothing
filters described in Section 6.5.2, pdf-page 173
of the SoftwareGuide.pdf

That will also make unecessary to refine the
segmentation with hole-filling post-processings
such as morphological operators.



Regards,



    Luis




------------------
yingli fan wrote:

> Hello all,
> 
> I play the program region growing. When I try to change the seed 
> position it does not give a good result.
> 
> I have a silly question of the image
> where is the image origin , whether it  is the upper left point. And the 
> origin is (0,0) or (1,1)
> 
> I just have a basic question of the  example images in ITK/Example ,
> 
> 
> 
> *******************************************************
> Yingli Fan
> Laboratory for Bioimaging and Anatomical Informatics
> Department of Neurobiology & Anatomy
> Drexel University, College of Medicine
> 2900 Queen Lane PA 19129
> Tel: 215-9918455 Fax: 215-843-9367
> Email: Yingli.Fan at drexel.edu   
> *******************************************************
> 
> 
> ------------------------------------------------------------------------
> 
> _______________________________________________
> Insight-users mailing list
> Insight-users at itk.org
> http://www.itk.org/mailman/listinfo/insight-users