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<p class=MsoNormal><font size=2 face=Arial><span lang=EN-HK style='font-size:
10.0pt;font-family:Arial'>Hi,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-HK style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-HK style='font-size:
10.0pt;font-family:Arial'>I want to write a filter that has as input an image
and as output a spatial object. From my search, it appears that such a kind of
filter doesn’t exist. I’ve tried to written then one by
copying/modifying the ImageToMeshFilter family. I’ve have then :<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-HK style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-HK style='font-size:
10.0pt;font-family:Arial'>- an itkSpatialObjectSource class<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-HK style='font-size:
10.0pt;font-family:Arial'>- an itkImageToSpatialObject class<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-HK style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-HK style='font-size:
10.0pt;font-family:Arial'>The mesh family just call Update on the output which
is a mesh, and because it is derived from a pointset object the classical
triggering of region propagation region is done and the GenerateData() function
is called.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-HK style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-HK style='font-size:
10.0pt;font-family:Arial'>The pb in case of SpatialObject is that Update()
simply notify a modification by calling this->Modified(), so the
GenerateData() is never called in my case. I’ve overwritten the Update()
method in my itkImageToSpatialObject class to force the GenerateData() call but
I am sure that:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-HK style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-HK style='font-size:
10.0pt;font-family:Arial'>- my filter pipeline is not maintained correctly<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-HK style='font-size:
10.0pt;font-family:Arial'>- I may have memory leaks and memory release crash<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-HK style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-HK style='font-size:
10.0pt;font-family:Arial'>Note that currently I do not care about the requested
region stuff, as I work in the whole image. Any reason why such a family of
filter is implemented, and there is a easy way to perfom it?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-HK style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-HK style='font-size:
10.0pt;font-family:Arial'>Thanks.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-HK style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-HK style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoAutoSig><i><font size=3 face="Times New Roman"><span
style='font-size:12.0pt;font-style:italic'>Best Regards,<o:p></o:p></span></font></i></p>
<p class=MsoAutoSig><i><font size=3 face="Times New Roman"><span
style='font-size:12.0pt;font-style:italic'><o:p> </o:p></span></font></i></p>
<p class=MsoAutoSig><i><font size=3 face="Times New Roman"><span
style='font-size:12.0pt;font-style:italic'>Jerome Schmid<o:p></o:p></span></font></i></p>
<p class=MsoAutoSig><i><font size=3 face="Times New Roman"><span
style='font-size:12.0pt;font-style:italic'><o:p> </o:p></span></font></i></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-HK
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
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