Hello Jothy,<div><br></div><div>I am using following code to generate contours:</div><div>---------------------------------------------------------------------------------</div><div><div> //Set vktImage.</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>vtkImageData* _vtkImage = vtkImageData::New();<span class="Apple-tab-span" style="white-space:pre"> </span></div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>_vtkImage->SetDimensions(dfData->cols,dfData->rows,1);</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>double spacing[3] = { 2.5,2.5,1.0 }; // TODO: fix me</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>_vtkImage->SetSpacing(spacing);</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>_vtkImage->GetPointData()->SetScalars(scalars);</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>/*double bounds[6];</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>_vtkImage->GetBounds(bounds);*/</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>_vtkImage->Update();</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>_vtkImage->Print(cerr);</div><div><br></div><div><span class="Apple-tab-span" style="white-space:pre"> </span>// Generate contours.</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>vtkContourFilter* contour=vtkContourFilter::New();</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>contour->SetInput(_vtkImage);</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>contour->GenerateValues(1,level,level);</div><div>
<span class="Apple-tab-span" style="white-space:pre"> </span>contour->Update();</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>contour->Print(cerr);</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>contour->GetOutput()->GetPoints()->Print(cerr);</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>int numOfPoints=contour->GetOutput()->GetPoints()->GetNumberOfPoints();</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>if(numOfPoints>0)</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>{</div><div><span class="Apple-tab-span" style="white-space:pre"> </span></div><div><span class="Apple-tab-span" style="white-space:pre"> </span>for(int i=0;i<numOfPoints;i++)</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>{</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>dosePlotPoint p;//=new dosePlotPoint();</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>p.x=contour->GetOutput()->GetPoints()->GetPoint(i)[0];</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>p.y=contour->GetOutput()->GetPoints()->GetPoint(i)[1];</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>outPoints.push_back(p);</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>}</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>}</div></div><div>--------------------------------------------------------------------------------------------------</div>
<div>I wish to obtain contour points in a manner that I can draw a path through those points. </div><div><br></div><div>Regards,</div><div>Abhishek Gupta.</div><div><br><div class="gmail_quote">On Wed, Oct 10, 2012 at 7:29 PM, Jothybasu Selvaraj <span dir="ltr"><<a href="mailto:jothybasu@gmail.com" target="_blank">jothybasu@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">I don't know how you are obtaining the points form vtkContourFilter. What exactly do you want to do?<br>
<br>I think; vtkCOntourFilter can generate multiple contour lines depending on the GenerateValues() parameters.<br>
<br><div class="gmail_quote"><div><div class="h5">On Wed, Oct 10, 2012 at 2:52 PM, abhishek <span dir="ltr"><<a href="mailto:abhishek@meddiff.com" target="_blank">abhishek@meddiff.com</a>></span> wrote:<br></div></div>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5">
Dear Jothy,<div><br></div><div>I applied your suggestions in my code and spacing problem seems to be addressed. Now I have plotted a path over the points generated by contour filter. Please see the attached image.</div><div>
<br></div><div>I saw the output of vtkContourFilter and it is returning points for vtkLines. How can I get only outline points?</div><div><br></div><div>Regards,</div><div>Abhishek. </div>
</div></div><div><br><img src="http://images/icon_attachment.gif"> <b>Untitled.png</b> (79K) <a href="http://vtk.1045678.n5.nabble.com/attachment/5716583/0/Untitled.png" rel="nofollow" link="external" target="_blank">Download Attachment</a></div>
<br><hr align="left" width="300">
View this message in context: <a href="http://vtk.1045678.n5.nabble.com/Dose-mapping-on-a-CT-image-tp5716583.html" target="_blank">Dose mapping on a CT image</a><br>
Sent from the <a href="http://vtk.1045678.n5.nabble.com/VTK-Users-f1224199.html" target="_blank">VTK - Users mailing list archive</a> at Nabble.com.<br><br>_______________________________________________<br>
Powered by <a href="http://www.kitware.com" target="_blank">www.kitware.com</a><br>
<br>
Visit other Kitware open-source projects at <a href="http://www.kitware.com/opensource/opensource.html" target="_blank">http://www.kitware.com/opensource/opensource.html</a><br>
<br>
Please keep messages on-topic and check the VTK FAQ at: <a href="http://www.vtk.org/Wiki/VTK_FAQ" target="_blank">http://www.vtk.org/Wiki/VTK_FAQ</a><br>
<br>
Follow this link to subscribe/unsubscribe:<br>
<a href="http://www.vtk.org/mailman/listinfo/vtkusers" target="_blank">http://www.vtk.org/mailman/listinfo/vtkusers</a><br>
<br></blockquote></div><span class="HOEnZb"><font color="#888888"><br><br clear="all"><br>-- <br><div dir="ltr">Jothybasu Selvaraj<br>PhD Student<br>University of Liverpool<br>UK<br></div><br>
</font></span></div>
</blockquote></div><br></div>