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<p class=MsoNormal>Hi folks,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>A couple of questions about vtkShepardMethod and
vtkGaussianSplatter if anyone has any experience with these two...<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I have been using vtkShepardMethod to interpolate a point
set onto an image for texture mapping on a surface, with some success. When I
set the MaximumDistance to something less than 1.0 (to prevent all input points
influencing each interpolated point) I see that the search area around each
point is actually a square, which shows up very clearly, almost making it
useless in my case - see attached image. Does anyone know if there is a way
around this or why it has been implemented this way? (I would expect a circular
search area around each point)<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I am instantiating shepard using:<o:p></o:p></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>_shepard =
vtkSmartPointer<vtkShepardMethod>::New();<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>_shepard->SetInputConnection(flattenFilter->GetOutputPort());<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>_shepard->SetSampleDimensions(100, 100, 1);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>_shepard->SetMaximumDistance(0.08);<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>_shepard->SetNullValue(NULL_DATA_VALUE);<span
style='color:white'>(NULL_DATA_VALUE);</span><o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I have tried replacing vtkShepardMethod with vtkGaussianSplatter
- but the resulting image is blank. I have used similar settings and played
with different values for Radius and ScaleFactor values without any luck. I was
thinking I could just swap shepardmethod with gaussiansplatter... but I must be
missing something.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>_gaussSplatter =
vtkSmartPointer<vtkGaussianSplatter>::New();<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>_gaussSplatter->SetInputConnection(flattenFilter->GetOutputPort());<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>_gaussSplatter->SetSampleDimensions(100, 100, 1);<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'>_gaussSplatter->SetRadius(1.0);<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>_gaussSplatter->SetNullValue(NULL_DATA_VALUE);<o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Does anyone have any advice for replacing vtkShepardMethod
with vtkGaussianSplatter? <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>thanks for any advice, cheers<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Allan
James</span><span style='font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>High
Performance Computing & Research Support<br>
Queensland University of Technology<br>
(07) 3138 9264<br>
<a href="mailto:ar.james@qut.edu.au"><span style='color:blue'>ar.james@qut.edu.au</span></a><br>
<a href="http://www.qut.edu.au/its/hpc"><span style='color:blue'>http://www.qut.edu.au/its/hpc</span></a><br>
<br>
><(((º> ._.·´¯`·.. >++(((º> ._.·´¯`·..
>++(((º></span><span style='font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
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