Re: registration of spherical images
- From: ImageAnalyst <imageanalyst@xxxxxxxxxxxxxx>
- Date: Wed, 30 Apr 2008 06:31:00 -0700 (PDT)
On Apr 30, 5:21 am, damo suzuki <liquidt...@xxxxxxxxx> wrote:
Are there techniques to register spherical images? Panning and tilting
of the original images would actually correspond to simple shifts on
the sphere, but what about roll?
--------------------------------------------------------------------------------------------
damo:
Is it really a sphere, like you're trying to align two maps on a
globe?
I'm not sure how to do it but I remember seeing these and perhaps a
Mobius transformation or the Reimann sphere concept might be a lead
that might help you.
http://en.wikipedia.org/wiki/M%C3%B6bius_transformation
Here's a really cool video that shows how you can take a spherical
image and map it to a plane:
http://www.youtube.com/watch?v=JX3VmDgiFnY
The full version and more explanation is available at the professor's
web site:
http://www.ima.umn.edu/~arnold/moebius/
Then, once your spherical images have been mapped to the plane, maybe
you can align the images in the plane using more traditional
registration techniques, and then map back onto your sphere.
Regards,
ImageAnalyst
.
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