We are happy to announce the Insight Toolkit (ITK) Release Candidate 1! 
As the first release candidate, the major advancements for ITK 5 have matured, and the community is encouraged to adopt the release candidate in ITK-based applications.
To install the 5.0 Release Candidate 1 Python packages, run
python -m pip install --upgrade pip
python -m pip install --upgrade --pre itk
This release improves Mesh support in Python though simplification and extension of Mesh and PointSet wrapping. In general, this release makes improvements to the modernization of the toolkit staged in ITK 5.
The C++ range classes continue to advance, including the experimental itk::ImageBufferRange, itk::IndexRange, and itk::ShapedImageNeighborhoodRange. Our migration to GitHub was overwhelmingly successful, but it continues to improve. Pull requests now receive a helpful CDash build analysis GitHub Check.
For an overview of ITK 5’s transition to modern C++, performance-related changes, the new, Pythonic API, and the project’s migration to GitHub, see the ITK 5 Alpha 1: Modern C++, ITK 5 Alpha 2: Performance, ITK 5 Beta 1: Pythonic Interface, and ITK 5 Beta 3: GitHub release announcements.
Performance Improvements
-
N4BiasFieldCorrectionImageFilteraccelerated throughitk::ImageBufferRangeand other optimizations. - Various modern C++ improvements related to default constructors, move operations, etc.
Documentation
- ITK Software Guide PDF is now updated for ITK 5.
-
TransformIndexToPhysicalPointnotation is improved.
Infrastructure
- Mesh IO classes, e.g. Gifti, OBJ, OFF, FreeSurfer, BYU, STL, are now split into separate modules for better modularity.
- A CDash build analysis summary and link is provided as a GitHub Check.
- Added new C++11 member functions from
std::vectortoitk::VectorContainer.
Third Party
- DCMTK 3.6.4 is now supported.
-
CanReadis now faster for inspection of potential DICOM files, both with the GDCM and DCMTK DICOM backends. - Eigen updated to 3.3.7.
- Improved support for integration of a system Eigen.
- Improved compatibility with system HDF5.
Python
- Wrapping for
MeshandPointSetclasses was simplified and extended. -
BinaryMaskToNarrowBandPointSetFilteris now available in Python. - Better
itk.ImageNumPy buffer management for advanced pipeline grafting.
What’s Next
There are many more bug fixes and improvements not mentioned above. For more details, please see the change log below. Congratulations and thank you to everyone who contributed to this release.
The ITK 5 Migration Guide is available to help transition a code base from ITK 4 to ITK 5. Please discuss your experiences on Discourse.
We are approaching the 5.0.0 final release! The next release will be the second ITK 5 release candidate; it is scheduled for March.
Enjoy ITK!
Changes from v5.0b03 to v5.0rc01
-----------------------------------------------
Bradley Lowekamp (2) @blowekamp:
BUG: Use compatible ITKv4 computation
BUG: Fix Ostu test to work with ITKv4 default options
Dženan Zukić (9) @dzenanz :
ENH: updating ITKMontage module
DOC: trying to fix the doxygen warning
ENH: Updating Visual Studio debug visualizer definitions
DOC: removing long outdated comment
ENH: updating Montage module
STYLE: minor fixes to release notes
COMP: a fix for system double-conversion build
ENH: updating Montage: fix double-conversion include directory
ENH: update ITKMontage: Fix crash when setting tiles from memory
Eigen Upstream (1):
Eigen3 2019-01-14 (16812519)
Francois Budin (1) @fbudin69500 @fbudin :
BUG: Missing ITK_WRAP_rgba_* variables in WrapITKConfig.cmake.in
Hans Johnson (7) @hjmjohnson @hjmjohnson :
STYLE: rm initializer list extra lines
ENH: DCMTK 3.6.4 api changes accomodated
ENH: Move default [con/de]strutor to .h
COMP: Protected static function must be public
PERF: GDCM & DCMTK CanRead fails very slowly for non-DICOM files.
PERF: readability container size empty
STYLE: Prefer = default to explicit constructor(){}
Jon Haitz Legarreta Gorroño (1) @jhlegarreta @jhlegarreta :
DOC: Adjust the CoC Committee to the 01/09/2019 meeting decision.
Matthew McCormick (31) @thewtex @matt.mccormick :
ENH: Update Azure Pipelines CI testing cache to 5.0b03
DOC: Releasing ITK updates for 5.0b03
BUG: Exercise BinaryMaskToNarrowBandPointSetFilterTest
BUG: BinaryMaskToNarrowBandPointSetFilter GenerateData protected
BUG: Remove unused FixedDensityFunction in JensenHavrdaChatvatTsallis
BUG: Do not build/use PoolMultiThreader without WinThreads or PThreads
BUG: ShapeDetectionLevelSetFilter outputs
BUG: ShapeDetectionLevelSetFilter outputFileName
COMP: Remove itk::ThreadPool::GetGlobalDefaultNumberOfThreadsByPlatform
DOC: Add 5.0 Beta 3 release notes
DOC: Fix link to UpdatingThirdParty.md in CONTRIBUTING.md
ENH: Add wrapping for BinaryMaskToNarrowBandPointSetFilter
COMP: Mark DCMTKImageIO::CanWriteFile argument as unused
COMP: Fix Software Guide line length too long warnings
COMP: Fix Software Guide line length too long warnings
ENH: Use CompensatedSummation in point set metrics to improve robustness
COMP: ShapedImageNeighborhoodRangeGTest array initialization
ENH: Move Gifti Mesh IO into a separate module
ENH: Consistency in wrapped mesh types
PERF: Parallelize ManifoldParzenWidnowsPointSetFunction::SetInputPointSet
ENH: Move OBJ Mesh IO into a separate module
ENH: Migrate OFF IO into ITKIOMeshOFF
ENH: Update IOSTL to 2019-01-16 master
COMP: Do not use readNoPreambleDICOM with Emscripten
BUG: Fix Azure Pipelines commit checkout
BUG: Fix Azure Pipelines master checkout on Windows
BUG: Default MeshIOBase PointDimension is 3
ENH: Update IOMeshSTL remote module and update name
ENH: Improve loading to help pyinstaller can analyze module dependencies
COMP: Wrapping of VectorContainer and DefaultStaticMeshTraits
ENH: Add legacy multi-frame DICOM MD5 content links
Niels Dekker (19) @N-Dekker @Niels_Dekker :
DOC: issue #273: SyNImageRegistrationMethod default member initializers
STYLE: Small improvements ImageBase constructor, SetRequestedRegion, '\'
COMP: Fix "unreachable code" MakeOutput RegistrationMethods
PERF: N4BiasFieldCorrectionImageFilter implementation using ImageRange
STYLE: Renamed ImageRange to ImageBufferRange
PERF: Remove SystemInformation data from ResourceProbe, fix issue #350
STYLE: Remove dynamic_cast from CastToSTLContainer(), add noexcept
PERF: N4BiasFieldCorrectionImageFilter adds points + weights ~20% faster
PERF: Fast assign point data, weights BSplineScatteredData filter
COMP: ImageBufferRange iterator same as const_iterator, for const image
PERF: BSplineDecompositionImageFilter now calls ImageAlgorithm::Copy
ENH: Add default-constructor and empty() to ShapedImageNeighborhoodRange
ENH: Made ShapedImageNeighborhoodRange assignable and tested copy + move
STYLE: C++ "Rule of Zero" for iterator classes of Range types
PERF: Add fast noexcept move semantics to Neighborhood and its Allocator
BUG: ResourceProbe::Reset() should set m_MaximumValue to lowest value
BUG: Fixed MoveAssignedRangeHasSameIterators GTest of two range types
STYLE: Move test utils default-constructed ranges to RangeGTestUtilities
ENH: Add default-constructor and empty() to IndexRange
Pablo Hernandez-Cerdan (14) @phcerdan @phcerdan :
DOC: Fix doxygen in SymmetricEigenAnalysis
ENH: Python, wrap complex in NumericTraits
ENH: Update IsotropicWavelets module
BUG: Fix failure of ITK_EIGEN macro expansion
ENH: Add test checking noexcept moves in FixedArray
STYLE: Change EXPECT_EQ to EXPECT_TRUE|FALSE in CommonTypeTraitGTest
ENH: Add python wrapping for std::pair and other int containers
ENH: Add internal/external eigen3 libraries
ENH: Update IsotropicWavelets
ENH: Add new c++11 member functions of std::vector to itk::VectorContainer
ENH: Simplify specialization of NumericTraits<std::complex<TComponent>>
BUG: itkMatrix: Use NumericTraits::Zero instead of literal 0
DOC: SoftwareGuide: improve TransformIndexToPhysicalPoint notation
COMP: Fix multi-line comment warning generated by latex notation
Roman Grothausmann (1) @romangrothausmann @grothausmann.roman :
BUG: avoid overwriting output in 2nd run used for comparison in test:
Simon Rit (1) @SimonRit @simon.rit :
BUG: python itk.Image returned by GetImageFromArray now manages its own buffer
@ihnorton (1):
COMP: use HDF5 library names only to avoid abspaths w/ SYSTEM_HDF5