This is Open Source Computer Vision Library 2.2.
For more information and the detailed ChangeLog see
http://opencv.willowgarage.com
These are v2.2 packages for Windows:
OpenCV-2.2.0-win32-vs2010.exe
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installation package containing OpenCV source code,
documentation, samples and pre-compiled
32-bit binaries for Visual Studio 2010 developers.
It does not contain 64-bit binaries, binaries
for other compilers, such as VS2008 or MinGW.
It does not have TBB or IPP support built-in.
If you need those, reconfigure and rebuild OpenCV from the source code
OpenCV-2.2.0-win.zip
--------------------
A subset of the above package that does not contain
pre-compiled binaries. If you are going to rebuild
OpenCV for your development environment,
which is recommended to do, you can download this smaller package.