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Re: find rotation between two images [message #40898 is a reply to message #40702]

Fri, 10 September 2004 02:02

helaha
Messages: 26
Registered: March 2004

Junior Member

tbeetz@yahoo.com (Tobi) wrote in message news:<7f0cc27.0409011354.45cce42f@posting.google.com>...
> i have several images where i would like to find the rotation and
> shift compared to a reference image. i use an alignment routine to
> seperate the shifting part. however, there is still the remaining
> problem of image rotation. is there a routine available? thanks!

I have developed an image processing tool IQM and there is an
alignment feature "Align stack". The first image of an image stack is
centered in the middle of the image (simply by shifting the centroid).
The subsequent images are aligned by three steps of shifts and
rotations (each step consists of up to 100 shifts and 100 rotations).
For each step an actual shift and rotation, which minimises the
statistical error is chosen. For large images, the calculation times
are therefore quite long.
If you are interested, look at
http://www.uni-graz.at/people/ahammer/IQM/index.htm

Regards,
Helmut Ahammer

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[Message index]

		find rotation between two images By: tbeetz on Wed, 01 September 2004 14:54
		Re: find rotation between two images By: R.G. Stockwell on Wed, 01 September 2004 18:01
		Re: find rotation between two images By: jeyadev on Mon, 13 September 2004 13:17
		Re: find rotation between two images By: dcw_yip on Fri, 10 September 2004 14:35
		Re: find rotation between two images By: ronn on Fri, 10 September 2004 08:33
		Re: find rotation between two images By: helaha on Fri, 10 September 2004 02:02

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