[Insight-users] Registration parameters
CSPL
affable at hd2 . dot . net . in
Fri, 8 Aug 2003 09:41:45 +0530
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Dear Mr.Luis,
Fine tuning Registration parameters:
Fixed volume is the extracted brain part of the original MR volume.
Moving is the spect volume=20
Our requirement is to register moving with the fixed, The registered =
spect is transformed and fuse it with the original MR so that spect =
fuses with the brain and not with the other tissues.
We are using following itk classes for registration and transform =
proces:
1. MultiResolutionImageRegistrationMethod
2.MattesMutualInformationImageToImageMetric
3.LinearInterpolateImageFunction
4.RecursiveMultiResolutionPyramidImageFilter
5.CenteredAffineTransform
6.RegularStepGradientDescentOptimizer
7.ResampleImageFilter
Input parameters for the above classes are:
no of iterations =3D 200;
TranslateScale =3D 1000;
optimizer Scales =3D 1;
Optimizer maximum step length =3D 0.1;
Optimizer minimum step length =3D 0.01;
SpatialSamples =3D 1000;
Bins =3D 50;
No of Levels =3D 3;
SetMinimize =3D TRUE;
We face problem in tuning parameters. We also feel we might be missing =
on some step. Can you please suggest us by looking at the images.
Images are given link to http://www . comsols . com/Registration-images . htm
Required output is also given in the same page.
=20
Thanking you,
Regards,
valli.
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<DIV><FONT face=3DArial size=3D2>
<DIV><FONT face=3DArial size=3D2>Dear Mr.Luis,</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>Fine tuning Registration =
parameters:</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>Fixed volume is the extracted brain =
part of the=20
original MR volume.<BR>Moving is the spect volume </FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>Our requirement is to register moving =
with the=20
fixed, The registered spect is transformed and fuse it with the original =
MR so=20
that spect fuses with the brain and not with the other =
tissues.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>We are using following itk classes for =
registration=20
and transform proces:<BR>1.=20
MultiResolutionImageRegistrationMethod<BR>2.MattesMutualInformationImageT=
oImageMetric<BR>3.LinearInterpolateImageFunction<BR>4.RecursiveMultiResol=
utionPyramidImageFilter<BR>5.CenteredAffineTransform<BR>6.RegularStepGrad=
ientDescentOptimizer<BR>7.ResampleImageFilter</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>Input parameters for the above classes =
are:<BR>no=20
of iterations =3D 200;<BR>TranslateScale =3D 1000;<BR>optimizer Scales =
=3D=20
1;<BR>Optimizer maximum step length =3D 0.1;<BR>Optimizer minimum step =
length =3D=20
0.01;<BR>SpatialSamples =3D 1000;<BR>Bins =3D 50;<BR>No of Levels =3D=20
3;<BR>SetMinimize =3D TRUE;</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>We face problem in tuning =
parameters. We also=20
feel we might be missing on some step. Can you please suggest us by =
looking at=20
the images.<BR>Images are given link to <A=20
href=3D"http://www . comsols . com/Registration-images . htm">http://www . comsol=
s.com/Registration-images.htm</A></FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>Required output is also given in the =
same=20
page.<BR> </FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>Thanking you,</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial=20
size=3D2>Regards,<BR>valli.</FONT></DIV></FONT></DIV></BODY></HTML>
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