<div dir="ltr">Hi Muhammad,<div><br></div><div>Remove vtkImageBlend from your pipeline. Use the SetOpacity() method on vtkLookupTable.</div><div><br></div><div> - David</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Mar 7, 2016 at 7:33 AM, Muhammad Jawad <span dir="ltr"><<a href="mailto:softplanner@gmail.com" target="_blank">softplanner@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi David,<div><br></div><div>thanks for your suggestions. I did the same as you mentioned, It add lookup table still opacity is not working. Perhaps, I did some wrong in my code.</div><div><br></div><div><pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,0)">connectorDicom</span><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,0)">=</span><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,0)">LoadDicomReader</span><span style="color:rgb(0,0,0)">(</span><span style="color:rgb(0,0,0)">dirPath</span><span style="color:rgb(0,0,0)">.</span><span style="color:rgb(0,0,0)">toStdString</span><span style="color:rgb(0,0,0)">());</span></pre>
<pre style="margin-top:0px;margin-bottom:0px"><br></pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(128,0,128)">vtkSmartPointer</span><span style="color:rgb(0,0,0)"><</span><span style="color:rgb(128,0,128)">vtkLookupTable</span><span style="color:rgb(0,0,0)">></span><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,0)">imgFirstColorMap</span><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,0)">=</span><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(128,0,128)">vtkSmartPointer</span><span style="color:rgb(0,0,0)"><</span><span style="color:rgb(128,0,128)">vtkLookupTable</span><span style="color:rgb(0,0,0)">>::</span><span style="color:rgb(0,0,0)">New</span><span style="color:rgb(0,0,0)">();</span><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,128,0)">//</span><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,128,0)">hot</span><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,128,0)">color</span><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,128,0)">map</span></pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,0)">imgFirstColorMap</span><span style="color:rgb(0,0,0)">-></span><span style="font-style:italic;color:rgb(0,0,0)">SetRange</span><span style="color:rgb(0,0,0)">(</span><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,128)">0.0</span><span style="color:rgb(0,0,0)">,</span><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,128)">255.0</span><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,0)">);</span></pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"> </span><span style="font-family:arial,sans-serif;color:rgb(0,0,0)">imgFirstColorMap</span><span style="font-family:arial,sans-serif;color:rgb(0,0,0)">-></span><span style="font-family:arial,sans-serif;font-style:italic;color:rgb(0,0,0)">SetHueRange</span><span style="font-family:arial,sans-serif;color:rgb(0,0,0)">(</span><span style="font-family:arial,sans-serif;color:rgb(192,192,192)"> </span><span style="font-family:arial,sans-serif;color:rgb(0,0,128)">0.0</span><span style="font-family:arial,sans-serif;color:rgb(0,0,0)">,</span><span style="font-family:arial,sans-serif;color:rgb(192,192,192)"> </span><span style="font-family:arial,sans-serif;color:rgb(0,0,128)">0.1</span><span style="font-family:arial,sans-serif;color:rgb(192,192,192)"> </span><span style="font-family:arial,sans-serif;color:rgb(0,0,0)">);</span></pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,0)">imgFirstColorMap</span><span style="color:rgb(0,0,0)">-></span><span style="font-style:italic;color:rgb(0,0,0)">SetValueRange</span><span style="color:rgb(0,0,0)">(</span><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,128)">0.4</span><span style="color:rgb(0,0,0)">,</span><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,128)">0.8</span><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,0)">);</span></pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,0)">imgFirstColorMap</span><span style="color:rgb(0,0,0)">-></span><span style="font-style:italic;color:rgb(0,0,0)">Build</span><span style="color:rgb(0,0,0)">();</span></pre>
<pre style="margin-top:0px;margin-bottom:0px"><br></pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(128,0,128)">vtkSmartPointer</span><span style="color:rgb(0,0,0)"><</span><span style="color:rgb(128,0,128)">vtkImageMapToColors</span><span style="color:rgb(0,0,0)">></span><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,0)">firstColorMapper</span><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,0)">=</span><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(128,0,128)">vtkSmartPointer</span><span style="color:rgb(0,0,0)"><</span><span style="color:rgb(128,0,128)">vtkImageMapToColors</span><span style="color:rgb(0,0,0)">>::</span><span style="color:rgb(0,0,0)">New</span><span style="color:rgb(0,0,0)">();</span></pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,0)">firstColorMapper</span><span style="color:rgb(0,0,0)">-></span><span style="color:rgb(0,0,0)">SetInputData</span><span style="color:rgb(0,0,0)">(</span><span style="color:rgb(0,0,0)">connectorDicom</span><span style="color:rgb(0,0,0)">-></span><span style="color:rgb(0,0,0)">GetOutput</span><span style="color:rgb(0,0,0)">());</span></pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,0)">firstColorMapper</span><span style="color:rgb(0,0,0)">-></span><span style="font-style:italic;color:rgb(0,0,0)">SetLookupTable</span><span style="color:rgb(0,0,0)">(</span><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,0)">imgFirstColorMap</span><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,0)">);</span></pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,0)">firstColorMapper</span><span style="color:rgb(0,0,0)">-></span><span style="color:rgb(0,0,0)">SetOutputFormatToRGBA</span><span style="color:rgb(0,0,0)">();</span></pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,0)">firstColorMapper</span><span style="color:rgb(0,0,0)">-></span><span style="font-style:italic;color:rgb(0,0,0)">Update</span><span style="color:rgb(0,0,0)">();</span></pre>
<pre style="margin-top:0px;margin-bottom:0px"><br></pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,0)">blend</span><span style="color:rgb(0,0,0)">-></span><span style="color:rgb(0,0,0)">SetOpacity</span><span style="color:rgb(0,0,0)">(</span><span style="color:rgb(0,0,128)">0</span><span style="color:rgb(0,0,0)">,</span><span style="color:rgb(0,0,128)">0</span><span style="color:rgb(0,0,0)">);</span></pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,0)">blend</span><span style="color:rgb(0,0,0)">-></span><span style="font-style:italic;color:rgb(0,0,0)">AddInputConnection</span><span style="color:rgb(0,0,0)">(</span><span style="color:rgb(0,0,0)">firstColorMapper</span><span style="color:rgb(0,0,0)">-></span><span style="color:rgb(0,0,0)">GetOutputPort</span><span style="color:rgb(0,0,0)">());</span></pre><span class="">
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"> </span></pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,0)">imgViewer</span><span style="color:rgb(0,0,0)">-></span><span style="font-style:italic;color:rgb(0,0,0)">SetInputData</span><span style="color:rgb(0,0,0)">(</span><span style="color:rgb(0,0,0)">blend</span><span style="color:rgb(0,0,0)">-></span><span style="color:rgb(0,0,0)">GetOutput</span><span style="color:rgb(0,0,0)">());</span></pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,0)">imgViewer</span><span style="color:rgb(0,0,0)">-></span><span style="font-style:italic;color:rgb(0,0,0)">UpdateDisplayExtent</span><span style="color:rgb(0,0,0)">();</span></pre><pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(0,0,0)"><br></span></pre><pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(0,0,0)"><br></span></pre></span><span class="HOEnZb"><font color="#888888"><pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(0,0,0)">Muhammad Jawad</span></pre></font></span></div></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><div class="gmail_quote">On 7 March 2016 at 14:53, David Gobbi <span dir="ltr"><<a href="mailto:david.gobbi@gmail.com" target="_blank">david.gobbi@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi Muhammad,<div><br></div><div>The vtkImageBlend filter does not add an alpha component to the image. If the first input to vtkImageBlend is RGB, then the output is RGB. This filter will blend its inputs together, but given just one input, the output will just be a copy of the input.</div><div><br></div><div>If your image is greyscale, you can use vtkImageMapToColors to add an alpha component, by using the SetOutputFormatToRGBA() option.</div><span><font color="#888888"><div><br></div><div> - David </div></font></span><div><div><div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Mar 7, 2016 at 4:05 AM, Muhammad Jawad <span dir="ltr"><<a href="mailto:softplanner@gmail.com" target="_blank">softplanner@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr"><br><div>Dear Vtk users,</div><div><br></div><div>I am using vtkimageblend class for multiple volumes and want to change opacity of volumes. Here I put the small code for single volume for simplicity. </div><div><br></div><div><pre style="margin-top:0px;margin-bottom:0px"><pre style="margin-top:0px;margin-bottom:0px"><font color="#000000">ImageViewer is working fine but opacity is not working.</font></pre><pre style="margin-top:0px;margin-bottom:0px"><font color="#000000"><br></font></pre><pre style="margin-top:0px;margin-bottom:0px"><font color="#000000">Any body have an idea that what I'm doing wrong here ?</font></pre></pre></div><div><br></div><div><pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(128,0,128)">vtkSmartPointer</span><span style="color:rgb(0,0,0)"><</span><span style="color:rgb(128,0,128)">vtkImageBlend</span><span style="color:rgb(0,0,0)">></span><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,0)">blend</span><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,0)">=</span><span style="color:rgb(192,192,192)"> </span><span style="font-family:arial,sans-serif;color:rgb(128,0,128)">vtkSmartPointer</span><span style="font-family:arial,sans-serif;color:rgb(0,0,0)"><</span><span style="font-family:arial,sans-serif;color:rgb(128,0,128)">vtkImageBlend</span><span style="font-family:arial,sans-serif;color:rgb(0,0,0)">>::New();</span></pre><pre style="margin-top:0px;margin-bottom:0px"><span style="font-family:arial,sans-serif;color:rgb(0,0,0)"><br></span></pre><pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(0,0,0)">blend</span><span style="color:rgb(0,0,0)">-></span><span style="color:rgb(0,0,0)">SetInputData</span><span style="color:rgb(0,0,0)">(</span><span style="color:rgb(0,0,128)">0</span><span style="color:rgb(0,0,0)">, </span><span style="color:rgb(0,0,0)">reader</span><span style="color:rgb(0,0,0)">-></span><span style="color:rgb(0,0,0)">GetOutput</span><span style="color:rgb(0,0,0)">());</span></pre><pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(0,0,0)"><br></span></pre><pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(0,0,0)">blend</span><span style="color:rgb(0,0,0)">-></span><span style="color:rgb(0,0,0)">SetOpacity</span><span style="color:rgb(0,0,0)">(</span><span style="color:rgb(0,0,128)">0</span><span style="color:rgb(0,0,0)">,</span><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,128)">0.3</span><span style="color:rgb(0,0,0)">);</span></pre><pre style="margin-top:0px;margin-bottom:0px"><span style="font-family:arial,sans-serif;color:rgb(0,0,0)"><br></span></pre><pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(128,0,128)">vtkSmartPointer</span><span style="color:rgb(0,0,0)"><</span><span style="color:rgb(128,0,128)">vtkImageViewer2</span><span style="color:rgb(0,0,0)">></span><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,0)">imgViewer = </span><span style="font-family:arial,sans-serif;color:rgb(128,0,128)">vtkSmartPointer</span><span style="font-family:arial,sans-serif;color:rgb(0,0,0)"><</span><span style="font-family:arial,sans-serif;color:rgb(128,0,128)">vtkImageViewer2</span><span style="font-family:arial,sans-serif;color:rgb(0,0,0)">>::New();</span></pre><pre style="margin-top:0px;margin-bottom:0px"><span style="font-family:arial,sans-serif;color:rgb(0,0,0)"><br></span></pre><pre style="margin-top:0px;margin-bottom:0px"><pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(0,0,0)">imgViewer</span><span style="color:rgb(0,0,0)">-></span><span style="font-style:italic;color:rgb(0,0,0)">SetInputData</span><span style="color:rgb(0,0,0)">(</span><span style="color:rgb(0,0,0)">blend</span><span style="color:rgb(0,0,0)">-></span><span style="color:rgb(0,0,0)">GetOutput</span><span style="color:rgb(0,0,0)">());</span></pre><pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(0,0,0)"><br></span></pre><pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(0,0,0)">imgViewer</span><span style="color:rgb(0,0,0)">-></span><span style="font-style:italic;color:rgb(0,0,0)">UpdateDisplayExtent</span><span style="color:rgb(0,0,0)">();</span></pre><pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(0,0,0)"><br></span></pre><pre style="margin-top:0px;margin-bottom:0px"><br></pre><pre style="margin-top:0px;margin-bottom:0px"><br></pre><pre style="margin-top:0px;margin-bottom:0px"><br></pre><pre style="margin-top:0px;margin-bottom:0px">--</pre><pre style="margin-top:0px;margin-bottom:0px">Regards,</pre><pre style="margin-top:0px;margin-bottom:0px">Muhammad Jawad</pre></pre></div></div><br></blockquote></div><br></div></div></div></div></div>
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