[Insight-users] Registration on PET to CT- Help Needed !!!

cspl affable@hd2.dot.net.in
Sat, 19 Apr 2003 18:12:20 +0530


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Hi Luis,
   Thanks for ur mail.
   As u said i am printing the initial transform paramters. I get the
following values:-
   [1, 0, 0, 1, 70.4192, 75.7447, -188.845, -146.701]

   I used "CenteredTransformInitializer" class for initializing the
CenteredAffineTransform.
   Even now i get the same error from itk. I tried with different values =
for
the paremeters but the error doesn't get any affect.

Error is:-
  itk::ExceptionObject (0012FD38)
Location: "Unknown"
File:
G:\NEWITKFILES\NewVersionITK7_4_2003\itksrc\Code\Algorithms\itkMattesMutu=
alI
nformati
onImageToImageMetric.txx
Line: 546
Description: itk::ERROR:
MattesMutualInformationImageToImageMetric(00302740): Too many sam
ples map outside moving image buffer: 52 / 1000

   Not even one iterations are generated this time also...

   What else i have to change the parameters...
   Any estimate of suitable parameters...

   My data sets are 512x512x1 (0.976562/0.976562 spacing) and 128x128x1
(3.906250/3.906250 spacing). Image type is short.

   Please suggest me...

   Thanks in advance.

-Regards,
   Sateesh.



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<DIV>Hi Luis,<BR>&nbsp;&nbsp; Thanks for ur mail.<BR>&nbsp;&nbsp; As u =
said i am=20
printing the initial transform paramters. I get the<BR>following=20
values:-<BR>&nbsp;&nbsp; [1, 0, 0, 1, 70.4192, 75.7447, -188.845,=20
-146.701]<BR><BR>&nbsp;&nbsp; I used "CenteredTransformInitializer" =
class for=20
initializing the<BR>CenteredAffineTransform.<BR>&nbsp;&nbsp; Even now i =
get the=20
same error from itk. I tried with different values for<BR>the paremeters =
but the=20
error doesn't get any affect.<BR><BR>Error is:-<BR>&nbsp; =
itk::ExceptionObject=20
(0012FD38)<BR>Location:=20
"Unknown"<BR>File:<BR>G:\NEWITKFILES\NewVersionITK7_4_2003\itksrc\Code\Al=
gorithms\itkMattesMutualI<BR>nformati<BR>onImageToImageMetric.txx<BR>Line=
:=20
546<BR>Description:=20
itk::ERROR:<BR>MattesMutualInformationImageToImageMetric(00302740): Too =
many=20
sam<BR>ples map outside moving image buffer: 52 / =
1000<BR><BR>&nbsp;&nbsp; Not=20
even one iterations are generated this time also...<BR><BR>&nbsp;&nbsp; =
What=20
else i have to change the parameters...<BR>&nbsp;&nbsp; Any estimate of =
suitable=20
parameters...<BR><BR>&nbsp;&nbsp; My data sets are 512x512x1 =
(0.976562/0.976562=20
spacing) and 128x128x1<BR>(3.906250/3.906250 spacing). Image type is=20
short.<BR><BR>&nbsp;&nbsp; Please suggest me...<BR><BR>&nbsp;&nbsp; =
Thanks in=20
advance.<BR><BR>-Regards,<BR>&nbsp;&nbsp; =
Sateesh.<BR><BR></DIV></BODY></HTML>

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