[Insight-users] Using Example - MutualInformationEuler2DRegistration..

[Venkat Anand]

Jisung and Luis,

Thanks for your suggestions - i was able to get the registration
working for the images i mentioned earlier after some effort spent in
playing around with the parameters, i increased the iterations and the 
translation scale. (A black filled
circle on a white background at a offset position in the moving
image as  compared to the original image).

However this kind of parameter adjustment was feasible coz
i know the end results, are there guidelines for choosing the parameters
for  registration by mutual information..?


Also I have a few more questions regarding the particular example
(MutualInformationEuler2DRegistration):

1. I wanted to save the registered image using the "Save Registered
Image" option, but i get the message saying "Problems saving file format".
I have been using PNG format for all my images.

2. Also i want to take a look at the tranform matrix (I am using
RigidTransform)..is there a way to print this out?

3. Does this application work with raw image formats too?

thanks
Venkat.



On Mon, 12 Aug 2002, Jisung Kim wrote:

> Hi.
> 
 
> It does image registration based on the selected
> region from the fixed image. When you load an image as
> an fixed image, the selected region is automatically
> set as the whole image (look at the "Selected Region"
> group on the GUI.) To change the selected region, you
> have to open a viewer by selecting "Fixed image" from
> the drop down list and click the "Show" button in the
> "Dispaly"Group. On that viewer, drag the mouse to draw
> a box. Then the region is selected. 
> 
> However, in your case, I believe the whole image as
> the selected region would be fine.
> 
> You can experiment with the "advanced options" that
> you  can see on the dialog box that opens when you
> click the "Advanced Options" button on the main
> window. If your moving image were slightly moved in x
> and y direction and no rotation, I think current
> seeting should works. 
> 
> I am sorry, but I don't know why it didn't work for
> you. Did the viewers for the "fixed image" and the
> "moving image" show right images?
> 
> > 
> > Any help appreciated.
> > 
> > -- Venkat
> > 
> > ******************************
> > Venkatanand Venkatachalapathy
> > 
> > ph: (H) 801 533 0387 
> > http://www.cs.utah.edu/~venkat
> > ******************************        
> > 
> > 
> > 
> > 
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> 
> =====
> Jisung Kim
> bahrahm@yahoo.com
> 106 Mason Farm Rd.
> 129 Radiology Research Lab., CB# 7515
> Univ. of North Carolina at Chapel Hill
> Chapel Hill, NC 27599-7515
> 
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-- Ven

******************************
Venkatanand Venkatachalapathy

ph: (H) 801 533 0387 
http://www.cs.utah.edu/~venkat
******************************