As the error message reports, image blend requires that both images be of the same tip. In your case, one image is double and the other if unsigned short.<div><br></div><div>Use vtkImageCast to cast the ushort image to double. then pass that to ImageBlend.<br>
<br><div class="gmail_quote">On Thu, Oct 18, 2012 at 8:36 AM, Raviteja, Allaparthi <span dir="ltr"><<a href="mailto:Allaparthi.Raviteja@philips.com" target="_blank">Allaparthi.Raviteja@philips.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="HOEnZb"><div class="h5">
<div lang="EN-US" link="blue" vlink="purple">
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<p class="MsoNormal">Hi,<u></u><u></u></p>
<p class="MsoNormal">I am new to VTK and I have a problem in combining two “mhd” images . The code and the error are as follows.<u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:blue">#include</span><span style="font-size:9.5pt;font-family:Consolas">
<span style="color:#a31515"><vtkMetaImageReader.h></span></span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:blue">#include</span><span style="font-size:9.5pt;font-family:Consolas">
<span style="color:#a31515"><vtkImageData.h></span></span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:blue">#include</span><span style="font-size:9.5pt;font-family:Consolas">
<span style="color:#a31515"><vtkSmartPointer.h></span></span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:blue">#include</span><span style="font-size:9.5pt;font-family:Consolas">
<span style="color:#a31515"><vtkImageViewer2.h></span></span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:blue">#include</span><span style="font-size:9.5pt;font-family:Consolas">
<span style="color:#a31515"><vtkImageBlend.h></span></span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:blue">#include</span><span style="font-size:9.5pt;font-family:Consolas">
<span style="color:#a31515"><string></span></span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:blue">int</span><span style="font-size:9.5pt;font-family:Consolas"> main (
<span style="color:blue">int</span> argc, <span style="color:blue">char</span>* argv[] )</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas">{</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas">
<span style="color:green">// Parse input arguments</span></span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas">
<span style="color:blue">if</span> ( argc != 3 )</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> {</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> std::cerr <<
<span style="color:#a31515">"Usage: "</span> << argv[0]</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> <<
<span style="color:#a31515">" Input1Filename Input2Filename"</span> << std::endl;</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas">
<span style="color:blue">return</span> EXIT_FAILURE;</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> }</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> </span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> std::string input1Filename = argv[1];</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> std::string input2Filename = argv[2];</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> <span style="color:green">// Read the images</span></span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> vtkSmartPointer<vtkMetaImageReader> MetaImageReader1 =</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> vtkSmartPointer<vtkMetaImageReader>::New();</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas">MetaImageReader1->SetFileName ( input1Filename.c_str() );</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> vtkSmartPointer<vtkMetaImageReader> MetaImageReader2 =</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> vtkSmartPointer<vtkMetaImageReader>::New();</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas">MetaImageReader2->SetFileName ( input2Filename.c_str() );</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> <span style="color:green">// Combine the images (blend takes multiple connections on the 0th input port)</span></span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> vtkSmartPointer<vtkImageBlend> blend =</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> vtkSmartPointer<vtkImageBlend>::New();</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> blend->AddInputConnection(MetaImageReader1->GetOutputPort());</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> blend->AddInputConnection(MetaImageReader2->GetOutputPort());</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> blend->SetOpacity(0,.5);</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> blend->SetOpacity(1,.5);</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> <span style="color:green">// Display the result</span></span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> vtkSmartPointer<vtkRenderWindowInteractor>::New();</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> vtkSmartPointer<vtkImageViewer2> imageViewer =</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> vtkSmartPointer<vtkImageViewer2>::New();</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> imageViewer->SetInputConnection(blend->GetOutputPort());</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> imageViewer->SetupInteractor(renderWindowInteractor);</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> imageViewer->GetRenderer()->ResetCamera();</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> imageViewer->GetRenderer()->SetBackground(1,0,0);
<span style="color:green">//red</span></span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> renderWindowInteractor->Initialize();</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> renderWindowInteractor->Start();</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> <span style="color:blue">return</span> EXIT_SUCCESS;</span><u></u><u></u></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas">}</span><u></u><u></u></p>
<p class="MsoNormal">ERROR: In C:\VTK-5.10.0\VTK\Imaging\vtkImageBlend.cxx, line 913<u></u><u></u></p>
<p class="MsoNormal">VTKImageBlend[00B6FD18]:Execute:input1 ScalarType [11],must match output ScalarType [5]<u></u><u></u></p>
<p class="MsoNormal">How do I resolve the above error? I am attaching the two input “mhd” files. Could Someone Please help me out.<u></u><u></u></p>
<p class="MsoNormal">Thank you.<u></u><u></u></p>
<p class="MsoNormal">Regards,<u></u><u></u></p>
<p class="MsoNormal">Ravi Teja.<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif""><u></u> <u></u></span></p>
<div class="MsoNormal" align="center" style="text-align:center"><span style="font-size:12.0pt;font-family:"Times New Roman","serif"">
<hr size="2" width="100%" align="center">
</span></div>
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