[Insight-users] Connected Component Image Filter

Mon, 15 Dec 2003 11:02:02 -0800

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Hi,
I am using the connected component image filter and I have the following
questions:

1)       I am getting a warning message that the number of labels exceeds
the number of available labels for the output type. When I use the
RelabelConnectedComponent filter and check number of objects, it reports 38,
so I do not understand what is exceeded.
2)       Does the connected component image Filter basically perform a type
of pixel aggregation to accumulate the pixels for each separate object? In
case of a 2D image, does it use a 4-connected neighbor or 8-connected
neighbor. Is this a parameter we can set?
Thanks
Radhika

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<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Hi,<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>I am using the connected component image filter and =
I have
the following questions:<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<![if !supportLists]>1)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp; <![endif]>I am getting
a warning message that the number of labels exceeds the number of =
available
labels for the output type. When I use the RelabelConnectedComponent
filter and check number of objects, it reports 38, so I do not =
understand what is
exceeded.<o:p></o:p>

<![if !supportLists]>2)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
<![endif]>Does the
connected component image Filter basically perform a type of pixel =
aggregation
to accumulate the pixels for each separate object? In case of a 2D =
image, does
it use a 4-connected neighbor or 8-connected neighbor. Is this a =
parameter we
can set?<o:p></o:p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Thanks<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Radhika<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

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<P><FONT SIZE=3D2 FACE=3D"Arial">                                       =
              </FONT></P>

<P><FONT SIZE=3D2 =
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Confidentiality Notice.

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privileged information. Any unauthorized review, use, disclosure or =
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please contact the sender by reply email and destroy all copies of the =
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