Registering images with IMALIGN without losing pixels

Christophe Jean wrote on Dec 07, 2001

Dear all,

I would like to align a list of images to a reference image and obtain images of
a common size which would be big enough to include all the pixels. (I am not
sure I am very clear.)
Because IMSHIFT preserves the size of the input images, the output images are
truncated in the directions of the shifts.
Is there a way to tell IMSHIFT not to preserve the size of the input images and
to enlarge the output images as necessary?
It is certainly easy but I didn't find the answer in the newsgroup nor in the
FAQ.

Many thanks in advance.

Best regards,

Christophe

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Gulab Chand Dewangan wrote on Dec 07, 2001

Dear  Christophe,
     You can use the tasks "rheader" and then "reflresamp" available
within STSDAS for your purpose. This will work even if the pixel sizes
and orientations are different provided the world coordinates have been
updated in the image headers.

Gulab 

On Fri, 7 Dec 2001 irafnet@noao.edu wrote:

> Dear all,
> 
> I would like to align a list of images to a reference image and obtain images of
> a common size which would be big enough to include all the pixels. (I am not
> sure I am very clear.)
> Because IMSHIFT preserves the size of the input images, the output images are
> truncated in the directions of the shifts.
> Is there a way to tell IMSHIFT not to preserve the size of the input images and
> to enlarge the output images as necessary?
> It is certainly easy but I didn't find the answer in the newsgroup nor in the
> FAQ.
> 
> Many thanks in advance.
> 
> Best regards,
> 
> Christophe
>

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Last post on Dec 07, 2001