ITK  5.0.0
Insight Segmentation and Registration Toolkit
Insight Toolkit


Welcome to the National Library of Medicine Insight Segmentation and Registration Toolkit (ITK). ITK is an open-source sofware system to support the Visible Human Project. Currently under active development, ITK employs leading-edge segmentation and registration algorithms in two, three and more dimensions.

Home Page

The Home Page of the Insight toolkit can be found at :

How to use this documentation

This documentation describes the API of the Toolkit. The Modules link presents a hierarchy of classes organized according to their functionality. The Related Pages link presents design details, in particular the use of the data pipeline model and the philosophy of iterators.