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Re: rotation matching of 2D images [message #49511]

Mon, 31 July 2006 08:47

Craig Markwardt
Messages: 1869
Registered: November 1996

Senior Member

"phil" <philippe_kobel@yahoo.es> writes:

> Hello!
>
> I have 2 images of same sizes, but different orientations.
> One of these images is my 'reference' image, and the other one is the
> 'target' image, that I would like to rotate, so that the orientation of
> its features match the orientation of the reference image.
>
> I would then need an algorithm performing some kind of
> cross-correlation and returning the adequate rotation angle( I could
> then use the idl function ROT afterwards).
>
> Does somebody have a clue of such a procedure ?

Wayne has some good suggestions. I was also impressed by this paper:

http://www.nmt.edu/~hjxie/Auto.pdf

which has sample IDL code to do image reconstruction by FFT, including
rotation, scale and shift.

Craig

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Craig B. Markwardt, Ph.D. EMAIL: craigmnet@REMOVEcow.physics.wisc.edu
Astrophysics, IDL, Finance, Derivatives | Remove "net" for better response
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		Re: rotation matching of 2D images By: Craig Markwardt on Mon, 31 July 2006 08:47
		Re: rotation matching of 2D images By: Wayne Landsman on Mon, 31 July 2006 05:09

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