<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Have you looked at filling the wholes caused by you contours with an algorithm such as BinaryFillholeImageFilter or a RegionGrowing methods? This hopefully will make the image compliant with the expected input to the signed distance function.<div><br></div><div>Brad<br><div><br></div><div><br><div><div>On Apr 26, 2012, at 8:13 AM, anna han wan wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><p style="MARGIN:0cm 0cm 10pt" class="MsoNormal"><font size="3"><font face="Calibri">Hi </font></font></p><p style="MARGIN:0cm 0cm 10pt" class="MsoNormal"><font size="3"><font face="Calibri">I am using SignedMaurerDistanceMapImageFilter to compute the distance map of my 3D images in which I have shapes like empty spheres and cubes(only the contour).</font></font></p><p style="MARGIN:0cm 0cm 10pt" class="MsoNormal"><font size="3" face="Calibri">My question is similar to the question asked in </font><a href="http://www.itk.org/pipermail/insight-users/2007-September/023496.html"><font size="3" face="Calibri">http://www.itk.org/pipermail/insight-users/2007-September/023496.html</font></a><font size="3"><font face="Calibri">.</font></font></p><p style="MARGIN:0cm 0cm 10pt" class="MsoNormal"><font size="3"><font face="Calibri">I want to have negative distance values inside the sphere and positive outside the sphere knowing that I don’t want to fill in my contour.</font></font></p><p style="MARGIN:0cm 0cm 10pt" class="MsoNormal"><font size="3"><font face="Calibri">Is there any way to do that?</font></font></p><p style="MARGIN:0cm 0cm 10pt" class="MsoNormal"><font size="3"><font face="Calibri">Also what’s the role of function setInsideIsPositive ? can you give me more explanation that the one provided <span style=""> </span>in the class number definition? </font></font></p></blockquote><div>I believe this toggles when the inside is positive, and the outside negative and visa versa.</div><br><blockquote type="cite"><p style="MARGIN:0cm 0cm 10pt" class="MsoNormal"><font size="3"><font face="Calibri">Thanks</font></font></p><p style="MARGIN:0cm 0cm 10pt" class="MsoNormal"><font size="3"><font face="Calibri">Anna.</font></font></p>
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