[vtkusers] blending DICOM images

[Sam Raby]

I guess I would like to know if there is any trivial error in my code. I
have seen usage of vtkBlendImage for 2D images [1]. but what I have done in
my code is that I am blending the whole 3D volume of the two DICOM series,
as I did not find any other way.

The code does not have compilation error, but the result seems sort of
random; sometimes it jumps to another slice when I change the blending
ratio, while I have already verified that image dimension, image spacing
and image origin of both volumes are equal.

[1] http://www.vtk.org/Wiki/VTK/Examples/Cxx/Images/CombineImages


On Tue, Feb 18, 2014 at 6:21 PM, Bill Lorensen <bill.lorensen at gmail.com>wrote:

> Does not work, does not help.
> On Feb 18, 2014 6:52 PM, "Sam Raby" <rabysam28 at gmail.com> wrote:
>
>>  Hello,
>>
>> I am using vtkBlendImage to overlay two DICOM images. The two images are
>> already perfectly co-registered.
>>
>> To overlay them, I am using the following code, but it does not work
>> well. Would you advice if there is any problem with the code? Thanks!
>>
>>     reader1->SetDirectoryName("/home/dicomDIR1");
>>
>>     reader1->Update();
>>
>>
>>     reader2->SetDirectoryName("/home/dicomDIR2");
>>
>>     reader2->Update();
>>
>>
>>     blend->AddInputConnection(reader1->GetOutputPort());
>>
>>     blend->AddInputConnection(reader2->GetOutputPort());
>>
>>
>>     blend->SetOpacity(0,0.5);
>>
>>     blend->SetOpacity(1,0.5);
>>
>>     imageViewer->SetInputConnection(blend->GetOutputPort());
>>
>>     imageViewer->SetSlice(oneSlice);
>>
>>
>>
>>
>>
>>
>>
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