Emimal Jabason wrote:
How do we know that two images of different modalities are already registered into a common coordinate system?
An interesting question. The answer, I
suspect, is "it depends". With satellite
images of the earth's surface, different
wavebands tend to be correlated,
particularly if they are reflected sunlight.
However, if the images are from different
dates then not only does the correlation
tend to be less, but there will be geometric
distortions between the images.
This geometric distortion can be removed by
registration/resampling, but that leaves
your question of how do we know it exists?
The answer is the prior knowledge that it
always exists.
I am aware that I have not answered your
question. Perhaps you need a better
question. That is to say, a more specific
answer would require a more specific problem.
Images of what? What modalities? What
lineage (from where do the images originate)?
--
Regards,
Martin Leese
E-mail:
please@see.Web.for.e-mail.INVALID
Web:
http://members.tripod.com/martin_leese/
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