Description:

ITK is an open-source software toolkit for performing registration and
segmentation. Segmentation is the process of identifying and classifying data
found in a digitally sampled representation. Typically the sampled
representation is an image acquired from such medical instrumentation as CT or
MRI scanners. Registration is the task of aligning or developing
correspondences between data. For example, in the medical environment, a CT
scan may be aligned with a MRI scan in order to combine the information
contained in both.

ITK is implemented in C++ and its implementation style is referred to as
generic programming (i.e.,using templated code). Such C++ templating means
that the code is highly efficient, and that many software problems are
discovered at compile-time, rather than at run-time during program execution.