OpenCV any Users on List?

[Bruce Labitt]

It has been suggested to me to look into OpenCV for some matrix math 
capabilities.  Anyone use it?

Can it handle double precision complex numbers?  From reading the 
documentation, it leads me to think it could, if one defines the matrix 
as double precision 2 channel.  OpenCV appears to require a good C++ 
background, which I don't have now.  Is it ugly to use?  Do I want to go 
there?

Any advice?  (Besides drowning myself now?)
-Bruce