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<p class="MsoNormal">Hi<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am trying to blend two different raw files. I have used vtkImageReader to read both the files. I have applied two different lookup tables on both the file<o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none">I have also used <span style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">vtkImageMapToColors</span><span style="font-size:9.5pt;font-family:Consolas"> ColorMapper =
<span style="color:blue">new</span> <span style="color:#2B91AF">vtkImageMapToColors</span>();<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas">
<span style="color:#2B91AF">vtkImageMapToColors</span> ColorMapper = <span style="color:blue">
new</span> <span style="color:#2B91AF">vtkImageMapToColors</span>();<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> ColorMapper.SetInput(reader1.GetOutput());
<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> ColorMapper.SetLookupTable(table);
<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas">
<span style="color:#2B91AF">vtkImageMapToColors</span> ColorMapper1 = <span style="color:blue">
new</span> <span style="color:#2B91AF">vtkImageMapToColors</span>();<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> ColorMapper1.SetInput(reader2.GetOutput());<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas"> ColorMapper1.SetLookupTable(table1);<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">“table is the Lookuptable applied on first file and table1 is the lookup table applied on second file”.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">After setting the lookuptable I have created instance of vtkImage blend.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">vtkImageBlend blend = new vtkImageBlend();<o:p></o:p></p>
<p class="MsoNormal">blend.setOpacity(0,0);<o:p></o:p></p>
<p class="MsoNormal">blend.setOpacity(1,0);<o:p></o:p></p>
<p class="MsoNormal">blend.AddInputConnection(ColorMapper.GetOutputPort);<o:p></o:p></p>
<p class="MsoNormal">blend.AddInputConnection(ColorMapper1.GetOutputPort);<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have later given the output of blend to the Input Connection of Viewer.<o:p></o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas">Viewer.SetInputConnection(blend.GetOutputPort());<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">But the <b>problem</b> is the opacity results are coming incorrect.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">If the opacity of first file is 0 and the opacity of second file is also 0 then no output should be displayed but the output is getting displayed with color of first LUT i.e Green.<o:p></o:p></p>
<p class="MsoNormal">If the opacities are 0.5 and 0.5(0.5 opacity for both the files) then the fused color (dark green ) is getting displayed. The same color is getting displayed at opacities 0 and 0.5(0 for first file and 0.5 for second).The same thing is
happening with opacities 1 and 0.5(1 for first file and 0.5 for second).<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">Could anyone please explain how this Opacity function is working and how to blend two different files with different color tables.<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-family:Pristina;color:#FF0066">Regards<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:Pristina;color:#FF0066">Anupriya Sharma<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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