[Insight-users] SignedDanielssonDistanceMapImageFilter runtime error

[Luis Ibanez]

Hi Xiaolong,

Thanks for letting us know that the example works now for you.

We have now added try/catch blocks around the calls to writer->Update()
in this example.

That was the reason why you were not getting a very informative
error message when attempting to use a .png file for storing a
float-pixel-type image.


    Regards,


        Luis


---------------------
xiaolong li wrote:
> Hi, Luis
>  
>     thank you so much for the reply, it works finally.
>  
> leonid
> 
> */Luis Ibanez <luis.ibanez at kitware.com>/* wrote:
> 
> 
>     Hi Leonid,
> 
>     Thanks for the detailed description of your problem.
> 
>     The most likely source of the problem is that you may be using
>     PNG as the output file format for the distance image.
> 
> 
> 
>     PNG does not support pixel type "float".
> 
> 
> 
>     Please use formats such as
> 
>     * MetaImage
>     * VTK
> 
>     as output file formats.
> 
>     For example:
> 
>     SignedDanielssonDistanceMapImageFilter
>     Circle.png CircleDistanceMap.mha voronoiMap.mha vectorDistance.mha
> 
>     (in a single command line)
> 
>     or
> 
>     SignedDanielssonDistanceMapImageFilter
>     FivePoints.png FivePointsDistance.mha FivePointsVoronoi.mha
>     FivePointsVector.mha
> 
> 
> 
>     I just run these two examples with the Nightly build of
>     ITK and obtained the expected results.
> 
> 
>     You can view the MetaImage output by using
> 
>     a) Slicer
>     b) ParaView
>     c) SNAP
>     d) ImageViewer (from InsightApplications)
> 
> 
>     Please let us know if you have any questions.
> 
> 
>     Thanks
> 
> 
>     Luis
> 
> 
>     ----------------------
>     xiaolong li wrote:
>      > hi,
>      >
>      > i need some help with this.
>      >
>      > i try to test
>      > the Examples/Filtering/SignedDanielssonDistanceMapImageFilter.cxx.
>      > accord to the section 6.8 in the itk guide 2.4,
>      > and i put the source code in a folder and create a CMakeLists.txt
>      > liket this:
>      >
>      > #####################################
>      > PROJECT(SignedDanielssonDistanceMapImageFilter)
>      > FIND_PACKAGE(ITK)
>      > IF(ITK_FOUND)
>      > INCLUDE(${ITK_USE_FILE})
>      > ELSE(ITK_FOUND)
>      > MESSAGE(FATAL_ERROR "ITK not found. Please set ITK_DIR.")
>      > ENDIF(ITK_FOUND)
>      > ADD_EXECUTABLE(SignedDanielssonDistanceMapImageFilter
>      > SignedDanielssonDistanceMapImageFilter.cxx )
>      > TARGET_LINK_LIBRARIES(SignedDanielssonDistanceMapImageFilter
>      > ITKBasicFilters ITKIO)
>      > #####################################
>      >
>      > then i compile it ( CMake 2.4 + itk 3.6 + Visutal Studio 2005) , fine
>      >
>      > when i try to run it with the sample image
>     (Example/Data/Circle.png and
>      > FivePoints.png), i got a RUNTIME ERROR
>      >
>      > i tried to figure out the reason and i found that if i change
>     this line
>      > ....
>      > typedef float OutputPixelType;
>      > ...
>      >
>      > to typedef unsigned short OutputPixelType;
>      >
>      > program can run but can't get the result as tutroial showed, so i
>     guess
>      > i messed up with something? btw
>      >
>      > i also tried this in other computer (itk 3.4 + visual studio
>     2003) , no
>      > luck :(
>      >
>      > anyone can help ? thx a lot
>      >
>      > leonid
>      >
>      >
>      >
>      >
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