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Automatic warping of an image
| Automatic warping of an image [message #42585] |
Tue, 15 February 2005 01:04 |
helaha
Messages: 26
Registered: March 2004
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Junior Member |
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Dear all!
I want to warp automatically an image so that the result is as near as
possible as compared to a reference image. I'm aware of the functions
TRIGRID and WARP_TRI. This routines work fine, if some control points
(x,y) are known. But I want to do this warping automatically without
such user predefined control points by minimizing the resulting error
(difference of warped image wit the reference image).
For example: There is a reference image of an object (e.g. a face of a
person) and there is a second image of this object with some
distortions, such as different light intensities or different shape of
the object due to a different image aqusition. Then the algorithm
should warp the second image as near as possible to the reference
image.
There are some algorithms in Java or in C using flexible meshes and an
error minimizing procedure, but can this be done in IDL without much
troubles.
Best wishes,
Helmut Ahammer
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