<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><DIV style="FONT-SIZE: 12pt; FONT-FAMILY: times new roman, new york, times, serif">Hi Obada;</DIV>
<DIV style="FONT-SIZE: 12pt; FONT-FAMILY: times new roman, new york, times, serif">first of all I want to thank for your attention. I have a 3D .raw data and It has some blur on surface. I would like implement surface detection. like that: I will have normal vector of points and I will get density values through the normal vector. and then I will calculate the derivative of density values;at the end maximum point will indicate the surface point. This is what I want to do. <BR>I attached a sample image that it says everything which I have tried to say.</DIV>
<DIV style="FONT-SIZE: 12pt; FONT-FAMILY: times new roman, new york, times, serif">A picture worths many sentence...</DIV>
<DIV style="FONT-SIZE: 12pt; FONT-FAMILY: times new roman, new york, times, serif">Tony<BR></DIV>
<DIV style="FONT-SIZE: 12pt; FONT-FAMILY: times new roman, new york, times, serif">----- Original Message ----<BR>From: Obada Mahdi <omahdi@gmx.de><BR>To: tony hakki <tony2007vtk@yahoo.com><BR>Cc: vtkusers@vtk.org<BR>Sent: Wednesday, February 28, 2007 1:17:06 PM<BR>Subject: Re: [vtkusers] Getting density values through a normal vector<BR><BR>
<DIV>Hi Tony!<BR><BR>On 2/26/07, tony hakki <tony2007vtk@yahoo.com> wrote:<BR>> how can I get the density values with fixed width step through a Normal<BR>> Vector using vtk classes. I have computed normal vectors of a surface so<BR>> far.<BR><BR>Is your question related to your posting "Normal of a point"<BR><A href="http://public.kitware.com/pipermail/vtkusers/2006-December/088603.html" target=_blank>http://public.kitware.com/pipermail/vtkusers/2006-December/088603.html</A><BR>from 12/10/2006? If so, I would still recommend to have a look the<BR>the classes I mentioned in my reply (vtkWarpScalars and<BR>vtkProbeFilter):<BR><A href="http://public.kitware.com/pipermail/vtkusers/2006-December/088642.html" target=_blank>http://public.kitware.com/pipermail/vtkusers/2006-December/088642.html</A><BR><BR>Are you looking for something different, or do you need help with these classes?<BR><BR>If you only need to evaluate scalars at one point at a time, you
could<BR>also generate a vtkLineSource starting at a given point, orient it<BR>along the point normal, set up length and resolution appropriately and<BR>feed that into vtkProbeFilter for evaluation.<BR><BR><BR>HTH,<BR><BR>Obada</DIV></DIV>
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