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scikit-surgeryutils - Tests/demos utilities, based around opencv-contrib-python-headless and PySide2

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scikit-surgeryutils is part of the SciKit-Surgery software project, developed at the Wellcome EPSRC Centre for Interventional and Surgical Sciences, part of University College London (UCL).

scikit-surgeryutils containing small demo apps and utilities.


  • Common overlay apps - Examples of common uses of scikit-surgeryvtk’s VTKOverlayWindow. Includes overlaying on a video feed, duplicating a feed.

Command Line Apps

  • - shows a millisecond timer and video image to crudely measure measure lag.

  • - extracts charuco points and annotates video image with each id detected.

  • - renders a VTK model, over background image, using OpenCV camera intrinsics.

  • - Create a calibraiton dot pattern.

  • - DICOM reslice widget demo.

  • - VTK text overlay demo.

  • - Read a surface mesh (.vtk,.vtp,.stl,.ply file), transform by 4x4 matrix and write as .vtk.


You can pip install directly from the repository as follows:

pip install git+



You can clone the repository using the following command:

git clone

Running the tests

You can run the unit tests by installing and running tox:

pip install tox


Please see the contributing guidelines.


Supported by Wellcome and EPSRC.

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