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Hi Laurent,<br>
<br>
You will find the files brainweb165a10f17 and
brainweb1e5a10f17Rot10Tx15 in
ftp://public.kitware.com/pub/itk/Data/BrainWeb/ in one of the tar
balls. You will also find examples for parameters for
MultiResMIREgistration in <br>
./InsightApplications/MultiResMIRegistration/SampleInputs/PracPETToPD.txt<br>
./InsightApplications/MultiResMIRegistration/SampleInputs/BrainWebT1toT2a.txt<br>
./InsightApplications/MultiResMIRegistration/SampleInputs/BrainWebT1toT2b.txt<br>
./InsightApplications/MultiResMIRegistration/SampleInputs/PracCTtoT1.txt<br>
<br>
The application does not work for 2D images but it should be easy to
modify it to 2D. Unfortunately you will have to make changes in quite a
few places, since the dimension is hardcoded in several places, in the
translation scales etc. You will also need to change the transform, the
file parser etc.<br>
<br>
Level: Number of levels of multi-resolution to use<br>
Lines 6-7: Please take a look at the software Guide section on the
MultiResolutionPyramidImageFilter. The values set the starting shrink
factor for the pyramid. Subsequenly the pyramid is shrunk by a factor
of 2 (along each dimension) till it gets to the top level.<br>
Line 10: The translation scale sets the translation scale for the
optimizer. The rigid (quarternion) optimizer optimizes the 3 parameters
of the quaternion (rotation params) + 3 translation params. Since the
rotation and translation parameters have different degrees of
influence, the scale for the translation parameters is usually a lot
smaller than the ones for the rotation.<br>
<br>
Thanks<br>
regards<br>
kk<br>
<br>
<a class="moz-txt-link-abbreviated" href="mailto:laurent.paul@club-internet.fr">laurent.paul@club-internet.fr</a> wrote:
<blockquote
cite="midmnet1.1112348938.4397.laurent.paul@club-internet.fr"
type="cite">
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<br>
Hi!<br>
<br>
I need help! Take a cup of columbian coffee!<br>
I try to use MultiResMIRegistration example.<br>
<br>
To be simple, I have series of Dicom files for CT and Analyze for PET.
I can convert these in any type of file (except ones I don't know as
.mha .mhd). I'd want to register these series.<br>
It would be great if you could say me what type of volume I can use
(Analyze, serie of 2D images as TIFF, JPG, PNG, Dicom, or other).
Apparently, the volume is passed by his header file?<br>
Is the two volumes must have the same dimensions (number of slices) and
include the same part of the volume? In fact PET embodies the whole
patient when the CT embodies only the pelvis. Is that a problem?<br>
<br>
I saw in users archives that I could use *.mha files. What are that
files? I have some but can't open them. Tell me more about that format.
Softwares tell me header is wrong(?!).<br>
<br>
I managed to run the application but just for 2D file. The result is
very bad but that's normal becuse the files I tried to register are
pelvis images (PET contains few informations, just the tumor). I'd want
to try before with brain images (less difficult to register I think). I
saw in the users archives that there are images on the ftp server,
brainweb165a10f17 and brainweb1e5a10f17Rot10Tx15. I didn't find them.
Is this application works with 2D images?<br>
<br>
Least, I don't understand some parameters. <br>
Line 5: Multi resolution level? Which level?<br>
Line 6-7:starting level?<br>
Line 10: Scale applied? <br>
<br>
</blockquote>
<br>
<br>
<blockquote
cite="midmnet1.1112348938.4397.laurent.paul@club-internet.fr"
type="cite">I know that's a lot of questions but I don't understand
Please, just give me some keys to register brain images.<br>
<br>
Thanks for your help.<br>
<br>
Laurent PAUL.<br>
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