[Insight-users] RE: Stitching multiple images

[Luis Ibanez]

Hi Jessica,


Are you doing something like creating a mosaic
image using partial images that overlap between
them ?

How big is the overlap region ?
If it contains a considerable fraction of the image
you may use a registration process for finding the
right mapping of one image into the coordinate
system of the other.

Once you find this transform, you can use the
ResampleImage filter for mapping the two
images into a common coordinte system.

For one image you will use the Identity transform
and for the other you will use the transform  
resultinf from the registration process.

Note that if you are building a mosaic, the
size of the output image in the ResampleImage
filter has to be selected large enough for
containing both images once they are mapped
to a common coordinate system.

You may want to take a look at the Registration
Chapter in the software guide
http://www . itk . org/ItkSoftwareGuiide . pdf
and to the section describing the ResampleImage
filter.  (Section 5.7.1).

--

Please let us know if you have further
questions,


    Thanks


      Luis


---------------------------
Jessica de Ryk wrote:

>Hi,
>I was hoping someone could point me in the right direction. I wish to stitch
>together two images which share a region of overlap. The exact amount of
>overlap and the offset at which the images are with respect to each other is
>not precisely known. Does anyone have any suggestions as to what functions I
>may use to align the two images based on this common overlap region. The
>process has to be expandable to allow multiple image stitching.
>Thanks
>Jessica
>
>
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