<div dir="ltr">ITK uses a demand driven pipeline (as does VTK).<br><br>Update on a down stream filter will propagate upstream. If you need intermediate results in a pipeline then you must apply Update at the point you want the data.<br>
<br><br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Sat, Apr 20, 2013 at 10:36 AM, Willi Huber <span dir="ltr"><<a href="mailto:surfersparadise85-itk@yahoo.com" target="_blank">surfersparadise85-itk@yahoo.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div style="font-size:10pt;font-family:tahoma,new york,times,serif"><div>Sorry,</div><div><br></div><div style="font-style:normal;font-size:13px;background-color:transparent;font-family:tahoma,'new york',times,serif">
I solved the problem.</div><div style="font-style:normal;font-size:13px;background-color:transparent;font-family:tahoma,'new york',times,serif">It wasn't due to the datatype. I forgot calling caster->Update().</div>
<div style="font-style:normal;font-size:13px;background-color:transparent;font-family:tahoma,'new york',times,serif">In the examples this method is never called. Why is this?</div><div style="font-style:normal;font-size:13px;background-color:transparent;font-family:tahoma,'new york',times,serif">
<br></div><div style="font-style:normal;font-size:13px;background-color:transparent;font-family:tahoma,'new york',times,serif">Cheers,</div><div style="font-style:normal;font-size:13px;background-color:transparent;font-family:tahoma,'new york',times,serif">
Willi</div><div><br><blockquote style="border-left:2px solid rgb(16,16,255);margin-left:5px;margin-top:5px;padding-left:5px"> <div style="font-family:tahoma,'new york',times,serif;font-size:10pt"> <div style="font-family:'times new roman','new york',times,serif;font-size:12pt">
<div dir="ltr"> <hr size="1"> <font face="Arial"> <b><span style="font-weight:bold">Von:</span></b> Willi Huber <<a href="mailto:surfersparadise85-itk@yahoo.com" target="_blank">surfersparadise85-itk@yahoo.com</a>><br>
<b><span style="font-weight:bold">An:</span></b> "<a href="mailto:insight-users@itk.org" target="_blank">insight-users@itk.org</a>" <<a href="mailto:insight-users@itk.org" target="_blank">insight-users@itk.org</a>> <br>
<b><span style="font-weight:bold">Gesendet:</span></b> 15:49 Samstag, 20.April 2013<br> <b><span style="font-weight:bold">Betreff:</span></b> [Insight-users] CastImageFilter: Error when casting to long long<br> </font> </div>
<div><div><div class="h5"><br><div><div><div style="font-size:10pt;font-family:tahoma,'new york',times,serif"><div style="font-family:tahoma,'new york',times,serif;font-size:10pt">Hello,</div><div style="font-family:tahoma,'new york',times,serif;font-size:10pt">
<br></div><div style="font-style:normal;font-size:13px;background-color:transparent;font-family:tahoma,'new york',times,serif">I want to do some casting without success.</div><div style="font-style:normal;font-size:13px;background-color:transparent;font-family:tahoma,'new york',times,serif">
For the purpose of generating an integral image and the bounded range in e.g. char I want to cast the image prior to caculating the
integrals.</div><div style="font-style:normal;font-size:13px;background-color:transparent;font-family:tahoma,'new york',times,serif">Whenever I cast to long which
is sufficient for 2D images it works all fine and also for small 3D test images when casting to long I get all the values I want to.</div><div style="font-style:normal;font-size:13px;background-color:transparent;font-family:tahoma,'new york',times,serif">
<br></div><div style="font-style:normal;font-size:13px;background-color:transparent;font-family:tahoma,'new york',times,serif">Bu when I try casting to datatype long long using the CastImageFilter the output of the cast is an empty image, i.e. and image with index={0,0,0}, spacing={0,0,0}, size={0,0,0} and so on. So only standard values.</div>
<div style="background-color:transparent"><font face="tahoma, new york, times, serif">I had a look into the CastImageFilter-code and there is also a concept check </font><span style="background-color:transparent"><font face="tahoma, new york, times, serif">Concept::Convertible< typename TInputImage::PixelType,</font></span><span style="font-family:tahoma,'new york',times,serif;font-size:13px;background-color:transparent"> typename TOutputImage::PixelType ></span></div>
<div style="font-style:normal;font-size:13px;background-color:transparent;font-family:tahoma,'new york',times,serif"><span style="font-family:tahoma,'new york',times,serif;font-size:13px;background-color:transparent">So why does this happen?</span></div>
<div style="font-style:normal;font-size:13px;background-color:transparent;font-family:tahoma,'new york',times,serif"><span style="font-family:tahoma,'new york',times,serif;font-size:13px;background-color:transparent"><br>
</span></div><div style="font-style:normal;font-size:13px;background-color:transparent;font-family:tahoma,'new york',times,serif"><span style="font-family:tahoma,'new york',times,serif;font-size:13px;background-color:transparent">Short snippet of my code:</span></div>
<div style="font-style:normal;font-size:13px;background-color:transparent;font-family:tahoma,'new york',times,serif"><span style="font-family:tahoma,'new york',times,serif;font-size:13px;background-color:transparent"> typedef itk::Image<long long, 3> ImageType;</span></div>
<div style="background-color:transparent"><span style="background-color:transparent"><font face="tahoma, new york, times, serif"><div style="background-color:transparent"><span style="white-space:pre-wrap"> </span>typedef itk::Image<unsigned short, Dimensions> InputImageType;</div>
<div style="background-color:transparent"><span style="white-space:pre-wrap"> </span>typedef itk::CastImageFilter<InputImageType, ImageType> CastType;</div><div style="font-style:normal;font-size:13px;background-color:transparent;font-family:tahoma,'new york',times,serif">
<br></div><div style="background-color:transparent"><span style="white-space:pre-wrap"> </span>typename CastType::Pointer caster = CastType::New();</div><div style="background-color:transparent"><br></div><div style="background-color:transparent">
<span style="white-space:pre-wrap"> </span>typename InputImageType::Pointer image = imageW->get<InputImageType>(); //imageW is a wrapper that allows handling of an image without knowing its type</div><div style="background-color:transparent">
<span style="white-space:pre-wrap"> </span>caster->SetInput(image);</div><div style="background-color:transparent"><span style="white-space:pre-wrap"> </span>typename ImageType::Pointer integral = caster->GetOutput();</div>
<div style="font-style:normal;font-size:13px;background-color:transparent;font-family:tahoma,'new york',times,serif"><br></div><div style="font-style:normal;font-size:13px;background-color:transparent;font-family:tahoma,'new york',times,serif">
After execution of the previous code integral keeps and empty image. Not a itkSmartPointer that points to Null but a real image of my type without content as described above.</div><div style="font-style:normal;font-size:13px;background-color:transparent;font-family:tahoma,'new york',times,serif">
<br></div><div style="font-style:normal;font-size:13px;background-color:transparent;font-family:tahoma,'new york',times,serif">I hope you
can help me.</div><div style="font-style:normal;font-size:13px;background-color:transparent;font-family:tahoma,'new york',times,serif"><br></div><div style="font-style:normal;font-size:13px;background-color:transparent;font-family:tahoma,'new york',times,serif">
Thanks in advance,</div><div style="font-style:normal;font-size:13px;background-color:transparent;font-family:tahoma,'new york',times,serif">Willi</div></font></span></div></div></div></div><br></div></div>_____________________________________<br>
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