This should give you more info:<br><br>  try<br>    {<br>    writer-&gt;Update();<br>    }<br>  catch( itk::ExceptionObject &amp; exc )<br>    {<br>    std::cout &lt;&lt; &quot;Caught unexpected exception: &quot;<br>              &lt;&lt; exc;<br>
    return EXIT_FAILURE;<br>    }<br><br><br><div class="gmail_quote">On Tue, Nov 1, 2011 at 1:53 AM, cagatay bilgin <span dir="ltr">&lt;<a href="mailto:bilgincc@gmail.com">bilgincc@gmail.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
Hello Rupinder, <br><br>Could it be that your CastFilter&#39;s output is of OutputImageType <br>and your Writer&#39;s input is of InputImageType and you connect<br>the cast filter&#39;s output to the writer filter ? Templating the ImageFileWriter<br>

over the OutputImageType might solve your problem. That is instead of<div class="im"><br><font style="font-size: 11px;" color="#2d2cfa"> typedef  itk::ImageFileWriter&lt; InputImageType &gt;  WriterType;<br></font></div>
try <br><font style="font-size: 11px;" color="#2d2cfa">typedef  itk::ImageFileWriter&lt; OutputImageType &gt;  WriterType;<br>
</font><br>PS. You can attach the error to the email for a better diagnosis.<br><br>Regards, <br>Cagatay<br><br><div class="gmail_quote"><div><div></div><div class="h5">On Mon, Oct 31, 2011 at 10:03 PM, Rupinder Singh <span dir="ltr">&lt;<a href="mailto:rupinder.singh123@yahoo.com" target="_blank">rupinder.singh123@yahoo.com</a>&gt;</span> wrote:<br>

</div></div><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div><div></div><div class="h5"><div style="word-wrap: break-word;">I&#39;m having difficulty understanding why the following function throws an<br>

exception at &#39;writer-&gt;Update()&#39; whenever it&#39;s called.<br><br><font style="font-size: 11px;" color="#2d2cfa">const     unsigned int    Dimension = 2;<br>typedef   unsigned char   InputPixelType;<br>typedef   unsigned char   OutputPixelType;<br>

<br>typedef itk::Image&lt; InputPixelType,    Dimension &gt;   InputImageType;<br>typedef itk::Image&lt; OutputPixelType,   Dimension &gt;   OutputImageType;<br><br>void saveITKImage(InputImageType *image)<br>{<br>   typedef  itk::RescaleIntensityImageFilter&lt; InputImageType,<br>

OutputImageType &gt; CastFilterType;<br>   typedef  itk::ImageFileWriter&lt; InputImageType &gt;                                         <br>WriterType;<br><br>   WriterType::Pointer      writer = WriterType::New();<br>   CastFilterType::Pointer  caster = CastFilterType::New();<br>

<br>   writer-&gt;SetFileName(&quot;/Users/usr/Desktop/test.jpg&quot;);<br>   caster-&gt;SetOutputMinimum(   0 );<br>   caster-&gt;SetOutputMaximum( 255 );<br><br>   // Define Pipeline<br>   caster-&gt;SetInput( image );<br>

   writer-&gt;SetInput( caster-&gt;GetOutput() );<br>   writer-&gt;Update();<br><br>   return;<br>}</font><br><br>I know I&#39;m doing something right because the following bit of code works perfectly when called.<br><br>

<span style="font-size: 11px;"><font color="#2d2cfa">void saveITKImage(InputImageType *image)<br>{<br>   typedef  itk::ImageFileWriter&lt; InputImageType &gt; WriterType;<br><br>   WriterType::Pointer  writer = WriterType::New();<br>

<br>   writer-&gt;SetFileName(&quot;/Users/usr/Desktop/test.jpg&quot;);<br><br>   // Define Pipeline<br>   writer-&gt;SetInput( image);<br>   writer-&gt;Update();<br><br>   return;<br>}</font></span><br><br>Does anyone know what I&#39;m doing wrong?<div>

<br></div><div>Thank you in advance for your help!</div></div><br></div></div>_____________________________________<br>
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