[Insight-users] Geospatial registration

Garrett Potts potts at cfl.rr.com
Tue Oct 26 10:58:49 EDT 2004


Hello All:

First,  congratulations on building a NICE open  source Registration 
library.

I have a question and I am not completely sure how to word it without 
being long winded.  So I'll keep it short.

I have been working on an Open source Geospatial package called OSSIM 
that performs mosaicing, tonal balancing, elev pseudo shading ... etc.  
The only part missing is registration.  I am currently trying to adapt 
some of your registration classes.  We use a similar chain based image 
processing approach and we have a generic sensor adjustment interface 
which uses an adjustable parameter concept much like what you have.

I have adapted our image processing chain by using your import image 
filter that takes a raw buffer and adapts it into your processing 
chain.   Our transformation parameters are normalized between -1 and 1 
and act as multipliers on the sensor's adjustable sigma values.  I have 
adapted the Transform to use our image to view transformation mechanism 
and map the parameters you send to our internal parameters.   What I am 
now trying to do is not let the Registration code do its own 
transformation but instead set the floating image manually after each 
parameter adjustment then let it do the image comparison to the fixed 
image.  Is there a way to override the current registration's internal 
resampling of the pixels?  If so this will allow me to adapt the output 
of my resampling process and feed it directly to the registration 
engine on every parameter adjustment.


Thank you in advance for any help


Take care

Garrett Potts



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