[Insight-users] Process Bar problem in ITK program

[Luis Ibanez]

Hi Chunyan,

ITK filters use the paradigm of Event/Observers
You will find a description of this concepts in
the software guide

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

please look at Chapter 3, "System Overview"
pdf-page 45.

Examples on the use of Observers are abundant on
the Registration chapter.

You will also find descriptions on how to use
observers in the tutorial sessions:

In particular in "ITK Architecture" :
http://www . itk . org/CourseWare/Training/GettingStarted-III . pdf


For code examples on how to integrate ITK with Qt,
please look at the tutorial:

        "ITK and Graphical User Interface"
http://www . itk . org/CourseWare/Training/GettingStarted-IV . pdf


You will find code examples about interfacing Qt and ITK in


      InsightApplications/QtITK


There is an explicit example on how to create a QtProgress
bar that is connected as observer of the ProgressEvents
sent by an ITK filter.

Look at:

     itkQtProgressBar.h
     itkQtProgressBar.cxx

http://www . itk . org/cgi-bin/cvsweb . cgi/InsightApplications/QtITK/?cvsroot=Insight




Regards,


    Luis



--------------------------------------
jiang wrote:

> Hi,
> I can use FuzzyConnectedness to do segmentation in my program. However, the
> segmenting process is a time consuming work. I want to use process bar to
> indicate the progress. When I debug the code, I find that there is only one
> line is very slow. It is m_Filter->Update(); This step occupies almost 80%
> process time.
> How can I separate m_Filter->Update(); in several steps, or use other method
> to show the process of the segmentation?
> I use Qt as GUI.
> 
> Thanks a lot!
> 
> Chunyan
> 
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