Compare VTK vs ITK and see what are their differences.


Mirror of Visualization Toolkit repository (by Kitware)


Insight Toolkit (ITK) -- Official Repository. ITK builds on a proven, spatially-oriented architecture for processing, segmentation, and registration of scientific images in two, three, or more dimensions. (by InsightSoftwareConsortium)
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5 7
2,173 1,200
2.3% 1.3%
9.9 9.8
2 days ago 8 days ago
C++ C++
GNU General Public License v3.0 or later Apache License 2.0
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.


Posts with mentions or reviews of VTK. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-04-05.


Posts with mentions or reviews of ITK. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-02-10.
  • Create Elegant C++ Spatial Processing Pipelines in WebAssembly
    8 projects | dev.to | 10 Feb 2023
    The itkImage.h header is ITK's standard n-dimensional image data structure.
  • Welcome and guide first-time contributors with a GitHub Action
    2 projects | dev.to | 12 Jan 2023
    In this post, we review how the Insight Toolkit (ITK) leverages the first-interaction GitHub Action to communicate our appreciation of the efforts of first-time contributors, establish norms for behavior, and provide civil pointers on where to find more information.
    2 projects | dev.to | 12 Jan 2023
    Our comment starts with a note of welcome to the community and gratitude for the effort made to contribute back to the project. Software development, regardless of the cold and mechanical nature of computers, is a social endeavor; we respect and acknowledge this by beginning with our gratitude.
  • How to raise the quality of scientific Jupyter notebooks
    9 projects | dev.to | 11 Jan 2023
    Jupyter has emerged as a fundamental component in artificial intelligence (AI) solution development and scientific inquiry. Jupyter notebooks are prevelant in modern education, commercial applications, and academic research. The Insight Toolkit (ITK) is an open source, cross-platform toolkit for N-dimensional processing, segmentation, and registration used to obtain quantitative insights from medical, biomicroscopy, material science, and geoscience images. The ITK community highly values scientific reproducibility and software sustainability. As a result, advanced computational methods in the toolkit have a dramatically larger impact because they can be reproducibly applied in derived research or commercial applications.
  • Ask HN: What is a cool technology to learn?
    2 projects | news.ycombinator.com | 1 Jul 2021
    Yeah, Prolog is pretty cool!

    Another technology I found interesting too learn is ITK (https://itk.org/). You need a different mindset using ITK than other image processing libraries.

    Lisp is cool as well.

    And fully homomorphic encryption.

  • Give me a starting nudge: microscopy image processing in python
    3 projects | /r/Python | 27 May 2021
    VTK is a powerful visualization package, but it's more for working with 3D FEM/CFD data. There are lots of things in there though, so it may be useful. The sister project Paraview is an application which can be used to work with data interactively. Both have great Python support. There is also ITK which is focused on with image data, like medical scans - never used it, though.

What are some alternatives?

When comparing VTK and ITK you can also consider the following projects:

OpenCV - Open Source Computer Vision Library

SVG++ - C++ SVG library

OpenMVG (open Multiple View Geometry) - open Multiple View Geometry library. Basis for 3D computer vision and Structure from Motion.

Video++ - Video++, a C++14 high performance video and image processing library.

GDCM - Grassroots DICOM read-only mirror. Only for Pull Request. Please report bug at http://sf.net/p/gdcm

tesseract-ocr - Tesseract Open Source OCR Engine (main repository)

CImg - The CImg Library is a small and open-source C++ toolkit for image processing

Flutter - Flutter makes it easy and fast to build beautiful apps for mobile and beyond