[ITK Community] Some questions about RegionGrowingSegmentation

[Jon Haitz Legarreta]

Dear Ruturaj,

1.- Haven't got the example with me, but if you intend to use a region
growing segmentation filter a good point to start is the ITK software
guide, chapter 9.1 [1]. There, you will be able to see which are the
available build-in algorithms/strategies, and you will see which are the
methods you need to call in order to make them work. Please, bear in mind
that segmentation is highly application-specific, and you may need to at
least adjust the parameters, when it's not to develop your own strategy
based on what's available in ITK, for example. Nevertheless, the available
examples in ITK are quite useful.

2.- Sure. The seed point can be read from wherever you need (user
interaction, program arguments, external file). The seed-setting method (or
whichever method actually requiring the seed point) will only require a
vector/array or individual coordinates, regardless of where you picked up
them.

3.- As said, haven't got the app in front of me, but surely you will be
able to build your own application for region growing segmentation without
any GUI. ITK is independent of any GUI (now, the apps may use a specific
one); you can just build an application with the GUI library that you most
like. Having said, that, may be the most common and easiest choice is Qt
[2], which has an open source version.


[1] http://www.itk.org/ItkSoftwareGuide.pdf
[2] http://qt-project.org/



On 7 February 2014 06:27, Girish, Gavaskar Ruturaj <
gavaskar.ruturaj.girish at philips.com> wrote:

>  Hello All,
>
>
>
> I am new to ITK & C++ and I have some questions related to the ITK app
> RegionGrowingSegmentation:
>
> 1.       Please explain to me the purpose of the function
> RegionGrowingSegmentation:: ClickSelectCallback(float x, float y, float z,
> float itkNotUsed(value), void * args), along with the meaning of the
> arguments (Line 451 in RegionGrowingSegmentation.cxx)
>
> 2.       Is it possible to pass the coordinates of the seed point without
> user interaction (for example, as arguments or by storing them in a file
> etc.) ?
>
> 3.       Can this app be built without a GUI, so that the coordinates of
> the seed point, along with other parameters, can be directly passed from
> the command line? If yes, what is the procedure to build it?
>
>
>
> Thanks.
>
>
>
> Regards
>
> Ruturaj
>
>
>
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