[Insight-developers] Use the example of RegionGrowingSegmentation to call FltkImageViewer

[Luis Ibanez]

Hi Yonggang,

How many 3D images do you anticipate to have to display ?

Examples such as RegionGrowingSegmentation display several
of the intermediate steps in their ITK pipeline. This is
done by instantiating multiple ImageViewers.

If the number of images that you intend to display is in
about 10 or less, then you are probably ok by just instantiating
one ImageViewer per image.  If you are planning to manage more
than 10 images, then you probably want to share the same
ImageViewer and have some sort of menu selection for switching
the input of the ImageViewer.  An example of such input
commutation can actually be found in the RegionGrowing application.

The image viewer already have the functionalities for saving
the list of clicked points in a file. This is defined in the
file

   InsightApplications/
                  Auxiliary/
                        FltkImageViewer/
                                  SliceView.h

in lines 1822-18-26 and 345-355.

The user simply needs to click on several points in the image,
then hit the "p" key. That opens a filedialog requesting a
filename, and proceeds to save the point coordinates in a text
file.



Please let us know if you have further questions.


   Thanks


     Luis


------------------------------------
Yonggang wrote:

> Hi:
>   I'm compiling a program.The function is:load a group of 3D images and 
> show them on screen,and then extract the coordinates (x,y,z)--that 
> clicked by mouse,last,save the coordinates to some arrays or a file(.txt).
>   I want to use the example RegionGrowingSegmentation included in the 
> InsightApplications-1.6.0,then to call the FltkImageViewer class 
> included in the InsightApplications-1.6.0\Auxiliary.
>   I think:the RegionGrowingSegmentation have called the FltkImageViewer 
> to show the images and extract the coordinates (x,y,z),and then I only 
> to modify the FltkImageViewer\fltkImageViewer.txx to extract the 
> coordinates (x,y,z) and save to an array.
>   My problem is : what should I do? the above or others methods?How 
> should I show a group of 3D images,and then extract the coordinates 
> (x,y,z)--that clicked by mouse.
> 
> 
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