ITK 5.1.2 available for download

December 8, 2020

We are happy to announce the Insight Toolkit (ITK) 5.1.2! ITK is an open-source, cross-platform toolkit for N-dimensional scientific image processing, segmentation, and registration.

Python Packages

Install ITK Python packages with:

pip install --upgrade itk


conda install -c conda-forge itk

Library Sources

Testing Data

Unpack optional testing data in the same directory where the Library Source is unpacked.


ITK 5.1.2 is a patch release that makes improvements to issues found in the 5.1.1 release. For more details on ITK 5.1, see the ITK 5.1.0 Release Notes.

This release addresses various issues such as HDF5 install paths and MRC and TIFF pixel type support — details can be found in the change log below. Cross-platform Python packages are available for Python 3.6, 3.7, 3.8, and 3.9. Packages for Python 3.5 are no longer provided following CPython’s deprecation schedule.

What’s Next

Join us in the creation of advanced, open source scientific image analysis tools. Take part in the community discussion at Contribute with pull requests, code reviews, and issue discussions in our GitHub Organization.

The first release candidate for ITK 5.2, which provides many new features and updates for Project MONAI, is anticipated over the next two weeks.

Enjoy ITK!

Changes from 5.1.1 to 5.1.2

Bradley Lowekamp (4):

Platform Fixes

  • Updating ITKSimpleITKFilters remote module (e3ba060fe5)

Bug Fixes

  • Address divide by zero error in SignedMaurerDistance (4fb2831d62)
  • Support MRC2014 mode 0 as signed 8-bit integer (f7d72576bf)

Style Changes

  • Improve function types used in SignedMaurerDistanceMap (b706cf64c7)

Hans Johnson (1):

Bug Fixes

  • itkhdf5 installed paths were incorrect with recent hdf5 versions (fd4a438042)

Lee Newberg (1):

Bug Fixes

  • MinPriorityQueueElementWrapper constructor needs default constructor (b027780259)

Matt McCormick (3):


  • Update ITK CMake version for 5.1.2 (39d9b1712f)
  • Add int.tiff.md5 content link for 5.1.2 release (a0125aa894)

Bug Fixes

  • Add TIFFImageIO support for unsigned int and int pixel types (241953dd23)

Niels Dekker (1):

Bug Fixes

  • Fix MatrixOffsetTransformBase SetFixedParameters if too few params (33e9e6bdba)

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