[Insight-developers] Very strange interaction between some itk image io and vtk io - sample images

[Richard Beare]

The culprit seems to have been the jpeg library when vtk was compiled
with the "USE_SYSTEM_JPEG" option. In my case this library came from
macports. Seems that using the itk versions of all libraries will be
the way to go in the future...

On Thu, Jul 24, 2008 at 12:15 AM, Luis Ibanez <luis.ibanez at kitware.com> wrote:
>
> Hi Richard,
>
> This sounds very strange.
>
> There is no obvious reason why linking with a VTK library should
> change the behavior of an ITK writer.
>
> One option that comes to mind is whether you may be using the SYSTEM
> zlib library, or the SYSTEM tiff library at the moment you configure
> with CMake.
>
>
>   Are you doing something like that at configuration time ?
>
>
>     Thanks
>
>
>         Luis
>
>
>
> ----------------------
> Richard Beare wrote:
>>
>> Hi,
>>
>> After further investigation it seems that the folding issue is related
>> to fslview, but that there are differences in images produced when the
>> executable is linked with vtkIO as well as the ITK libraries. In the
>> former case the file is longer than in the latter, so something
>> unexpected is happening. When using linking with vtk the output image
>> is
>>
>> 131776 bytes, of which 256*256*2 is data - leaving 704 bytes as header
>>
>> when linking with itk only the file is
>>
>> 131424 bytes, leaving 352 bytes as header (a more typical number).
>>
>> Examining the data with a raw image viewer shows that there isn't a
>> folding issue.
>>
>> I'll check to see whether the change in file size happens under linux
>> since my former tests were looking for the wrong thing. Presumably
>> fslview is getting upset somehow by the different header.
>>
>> On Sun, Jul 20, 2008 at 10:16 AM, Richard Beare <richard.beare at gmail.com>
>> wrote:
>>
>>> Hi,
>>> I can't remember whether images will make it onto the list, so I'll
>>> give it a go. This example illustrates the folding effect I attempted
>>> to describe in earlier messages.
>>>
>>
>> _______________________________________________
>> Insight-developers mailing list
>> Insight-developers at itk.org
>> http://www.itk.org/mailman/listinfo/insight-developers
>>
>