[vtkusers] vtkImageViewer2

[alba garin]

i tried this way before, maybe i set the lookup table incorrectly, but it did not work. does the look up table use the 3 components of the rgb image pixels? thanks,alba





Date: Sat, 5 Mar 2011 10:17:53 +0530
Subject: Re: [vtkusers] vtkImageViewer2
From: karthik.krishnan at kitware.com
To: albagarin1986 at hotmail.com
CC: vtkusers at vtk.org

vtkImageViewer2 is meant to display grayscale images. It uses an instance of vtkImageMapToWindowLevelColors. This by default does a RGB(A) to RGB(A) with all components being the same. You can set your own lookup table to this class to avoid that and have colors displayed your way...


 imageviewer2->GetWindowLevel()->SetOutputFormatToRGB();

 vtkLookupTable *lut = vtkLookupTable::New();
 lut->SetHueRange(...);
 lut->SetSaturationRange(...);
 lut->SetValueRange(...);
 lut->SetAlphaRange(...);

 lut->SetNumberOfColors(256);
 lut->Build();
 imageviweer2->GetWindowLevel()->SetLookupTable(lut);

On Fri, Mar 4, 2011 at 1:56 PM, alby13 <albagarin1986 at hotmail.com> wrote:

Good morning,



i am trying to visualize a rgb image with vtkImageViewer2 and i cannot get a

correct image, dependieng on how i set the viewer i get a one component

image (using only one of the 3 rgb components), or incorrect images (i check

the result coz i can view the rgb image with itk-snap).

anyone could help me?



thanks,





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