Hi Arne,<br><br>The surface integral is the same as the surface area if the scalars on your surface are constant. <br><br>So you would use vtkContourFilter to generate an isosurface of your distance map at an isovalue of 0 and then use vtkMassProperties to calculate the surface area of the resulting polydata. That should give you a discrete approximation.
<br><br>--<br>karthik<br><br><div><span class="gmail_quote">On 3/7/07, <b class="gmail_sendername">Arne Hansen</b> <<a href="mailto:bsd.diverse@gmail.com">bsd.diverse@gmail.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div>Hello. I have a 3dimensionel signed distance map, where a shape is <br>embedded as the 0th surface. I need to calculate the surface integral <br>of this 0th surface. How can i do this?</div>
<div>thqnk you </div>
<br>_______________________________________________<br>Insight-users mailing list<br><a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:Insight-users@itk.org">Insight-users@itk.org</a><br><a onclick="return top.js.OpenExtLink(window,event,this)" href="http://www.itk.org/mailman/listinfo/insight-users" target="_blank">
http://www.itk.org/mailman/listinfo/insight-users</a><br><br></blockquote></div><br><br clear="all"><br>