## Re: [Vxl-users] [Insight-users] calculating a surface interal

 Re: [Vxl-users] [Insight-users] calculating a surface interal From: Karthik Krishnan - 2007-03-07 14:42:02 Attachments: Message as HTML ```Hi Arne, The surface integral is the same as the surface area if the scalars on your surface are constant. 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. -- karthik On 3/7/07, Arne Hansen wrote: > > Hello. I have a 3dimensionel signed distance map, where a shape is > embedded as the 0th surface. I need to calculate the surface integral > of this 0th surface. How can i do this? > thqnk you > > _______________________________________________ > Insight-users mailing list > Insight-users@... > http://www.itk.org/mailman/listinfo/insight-users > > ```

 [Vxl-users] calculating a surface interal From: Arne Hansen - 2007-03-07 14:01:38 Attachments: Message as HTML ```Hello. I have a 3dimensionel signed distance map, where a shape is embedded as the 0th surface. I need to calculate the surface integral of this 0th surface. How can i do this? thqnk you ```
 Re: [Vxl-users] [Insight-users] calculating a surface interal From: Karthik Krishnan - 2007-03-07 14:42:02 Attachments: Message as HTML ```Hi Arne, The surface integral is the same as the surface area if the scalars on your surface are constant. 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. -- karthik On 3/7/07, Arne Hansen wrote: > > Hello. I have a 3dimensionel signed distance map, where a shape is > embedded as the 0th surface. I need to calculate the surface integral > of this 0th surface. How can i do this? > thqnk you > > _______________________________________________ > Insight-users mailing list > Insight-users@... > http://www.itk.org/mailman/listinfo/insight-users > > ```