[ITK Community] Some questions about RegionGrowingSegmentation

[Girish, Gavaskar Ruturaj]

Dear Jon,

Thanks for your suggestion. I am looking to modify the source code to accept multiple seed points so that more than one region can be segmented. I find it much easier without a GUI as I never worked with developing a GUI before. I will go through the links you posted.

Regards
Ruturaj


From: Jon Haitz Legarreta [mailto:jhlegarreta at vicomtech.org]
Sent: Friday, February 07, 2014 1:15 PM
To: Girish, Gavaskar Ruturaj
Cc: community at itk.org
Subject: Re: [ITK Community] Some questions about RegionGrowingSegmentation

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<mailto: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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