[Insight-users] 3D deformable registration

[Luis Ibanez]

Hi Emily,

You will find examples on the use of the WarpImageFilter
under


    Insight/Examples/Registration

In particular:

	DeformableRegistration2.cxx
	DeformableRegistration3.cxx
	LandmarkWarping2.cxx

The AndImageFilter is simply a filter with two
inputs. Like the AddImageFilter.

If you post the error messages that you got,
along with a minimal piece of code where you
show the instantiation of the filters, we may
be in a better position to help you.


Regards,


     Luis


------------------
ping chen wrote:
> Hi Luis,
> 
> I tried to use AndImageFilter just like the example
> about binarythresholdimagefilter given in the
> Filtering chapter in the userguide, but a lot of
> errors show up. I wonder if there is any example
> availabe using AndImageFilter and WarpImageFilter.  
> 
> Thank you. 
> 
> -Emily 
> 
> --- Luis Ibanez <luis.ibanez at kitware.com> wrote:
> 
>>Hi Emily,
>>
>>
>>1) You can mask a region of an image by
>>    using the AND image filter.
>> 
>>
> 
> http://www.itk.org/Insight/Doxygen/html/classitk_1_1AndImageFilter.html
> 
>>    This will work ok if both the mask and
>>    the image are of the same pixel type and
>>    are of "integer" type: {char, short, int,
>>    long}.
>>
>>
>>2) You resample the moving image, using the
>>    WarpImageFilter and providing the deformation
>>    field.  Note that the WarpImageFilter requires
>>    you to specify an Origin (in physical space)
>>    and a size (in pixels) for the output image.
>>
>>    What you could do is to take the region from the
>>    moving image and figure out what will be its
>>    bounding box once it is mapped to the coordinate
>>    system of the fixed image.  Once you have such
>>    bounding box, you simply feed this information
>>    into the origin and size provided to the Warp
>>    ImageFilter.
>>
>>    The resulting image will only have the size of
>>    that specified bounding box.
>>
>>
>>
>>
>>Regards,
>>
>>
>>    Luis
>>
>>
>>------------------
>>ping chen wrote:
>>
>>
>>>Hello, 
>>>
>>>I have used DeformableRegistration1.cxx to
>>
>>register 3d
>>
>>>MRI brain images and i got the warped whole brain
>>>image and also the DisplacementField.  
>>>
>>>I have two problems:
>>>1. If I have a mask of one region, how i can use
>>
>>this
>>
>>>mask to take out that only region from the 3d
>>
>>images?
>>
>>>2. I wonder how i can use this transform
>>
>>information
>>
>>>from DeformableRegistration1 to warp this region,
>>>instead of a whole brain?
>>>
>>>Thank you.
>>>emily
>>>
>>>
>>>	
>>
>>
>>_______________________________________________
>>Insight-users mailing list
>>Insight-users at itk.org
>>http://www.itk.org/mailman/listinfo/insight-users
> 
> 
> 
> 	
> 		
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