<div>Andrew,</div>
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<div>The reader does read the pixel spacing and origin. What is the source of your dicom images?</div>
<div> </div>
<div>Bill<br><br> </div>
<div><span class="gmail_quote">On 6/1/06, <b class="gmail_sendername">Hoole, Andrew</b> <<a href="mailto:andrew.hoole@addenbrookes.nhs.uk">andrew.hoole@addenbrookes.nhs.uk</a>> wrote:</span>
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<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Hi All</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I'm new to the ITK stuff and having been working through the User guide. I have used the code in the guide to read a DICOM file and display it in a window. When I read the file it doesn't appear to read the information related to the pixel size or the origin of the image. This information is embedded in the DICOM is there a way to make the reader get this data or is the problem with the image which I hook onto the output of the reader. The code I am using is as follows:
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<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> typedef signed short InputPixelType;</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> const unsigned int InputDimension = 2;</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> typedef itk::Image< InputPixelType, InputDimension > InputImageType;</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> typedef itk::ImageFileReader< InputImageType > ReaderType;</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> ReaderType::Pointer reader = ReaderType::New();</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> reader->SetFileName("c:\\temp\\test.dcm");</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> typedef itk::GDCMImageIO ImageIOType;</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> ImageIOType::Pointer gdcmImageIO = ImageIOType::New();</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> reader->SetImageIO( gdcmImageIO );</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> try {</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> reader->Update();</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> } </span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> catch (itk::ExceptionObject & e){</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> AfxMessageBox("Exception in file reader ",MB_OK,NULL);</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> return;</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> }</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> typedef itk::Point< double, InputImageType::ImageDimension > PointType;</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> PointType point;</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> InputImageType::IndexType pixelIndex;</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> InputImageType::PixelType pixelValue;</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> InputImageType::Pointer image = reader->GetOutput();</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> InputImageType::SpacingType spacing;</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> spacing[0] = 0.5; // spacing along X</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> spacing[1] = 0.5; // spacing along Y</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> image->SetSpacing( spacing );</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> InputImageType::PointType origin;</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> origin[0] = -128.0; // coordinates of the</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> origin[1] = -128.0; // first pixel in N-D</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> image->SetOrigin( origin ); </span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">As you can see I am manually setting the pixel size and origin which is not ideal. </span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Regards</span></font></p>
<p><font face="Arial" size="2"><span lang="EN-US" style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </span></font></p>
<p style="MARGIN: 0cm 0cm 0pt"><b><font face="Tahoma" size="2"><span style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">Andrew Hoole </span></font></b></p>
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