<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;"><DIV><SPAN style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">Hi itk users,<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></DIV>
<DIV><SPAN style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">I'm a newbie to itk and I have question regarding mesh curvature computation.<o:p></o:p></SPAN></DIV>
<DIV><SPAN style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">I'm using the class itkQuadEdgeMesh for this purpose :<o:p></o:p></SPAN></DIV>
<DIV><SPAN style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #a31515; FONT-SIZE: 10pt">"itkQuadEdgeMeshDiscreteMaxCurvatureEstimator.h" </SPAN><SPAN style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 10pt">is used to compute the Max curvature</SPAN><SPAN style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt"><o:p></o:p></SPAN></DIV>
<DIV><SPAN style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #a31515; FONT-SIZE: 10pt">"itkQuadEdgeMeshDiscreteMeanCurvatureEstimator.h" </SPAN><SPAN style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 10pt">is used to compute the Mean curvature</SPAN><SPAN style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt"><o:p></o:p></SPAN></DIV>
<DIV><SPAN style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">I've tested several volumes which I convert first to a mesh and I have noticed that the mean and max curvatures values returned by the above classes are always positive!<o:p></o:p></SPAN></DIV>
<DIV><SPAN style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">I checked with vtkCurvatures class and I’ve found that these curvatures can take negative values (as it is supposed).</SPAN></DIV>
<DIV><SPAN style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt"><o:p></o:p></SPAN> </DIV>
<DIV><SPAN style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">Could someone explain to me why this occurs? <SPAN style="mso-spacerun: yes"> </SPAN><o:p></o:p></SPAN></DIV>
<DIV><SPAN style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">Thanks a lot <o:p></o:p></SPAN></DIV>
<DIV><SPAN style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">Seb<o:p></o:p></SPAN></DIV>
<P style="MARGIN: 0cm 0cm 10pt" class=MsoNormal><o:p><FONT size=3 face=Calibri> </FONT></o:p></DIV>
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