Scientific data processing and visualization leveraging the Visualization Toolkit (VTK) library. The package provides a Unity wrapper around VTK for your scientific and medical imaging needs.
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This package is provided solely for evaluation, learning, or testing purposes before purchase and is not permitted for commercial use.
VTKUnity-Activiz v2.0.0 (Latest version)
“If possible, please buy the package to support the developer”
Description
Kitware provides this asset to enable quick integration of the Visualization Toolkit (VTK) in Unity.
VTK is a (BSD-style) open source software for manipulating and displaying scientific data. It includes many advanced algorithms to load and process data, as well as state-of-the-art rendering techniques.
VTK is used by academicians for teaching and research, by government research institutions, and by many commercial companies that use VTK to build or extend products. It exists for 30 years and has been downloaded more than 2 millions times.
For examples, please see VTK in Action.
This asset enables rendering of VTK scenes into the Unity rendering pipeline using Unity low-level native plug-in interface.
The VTK C# API to be used from Unity scripts is provided through ActiViz.
ActiViz is a closed source software system that wraps VTK for C#. It allows developers to quickly develop production-ready, interactive 3D applications in the .NET environment.
Purchasing this asset gives you access to the full set of Activiz capabilities hence VTK.
Technical details
The documentation and the example scenes shipped with this asset show how to set up a VTK scene within your Unity project.
The non-exhaustive list below highlights the features provided by this asset:
I/O:
OBJ, PLY, STL, GLTF file readers
MHA, MHD, DICOM, NRRD, NIFTI file reader
VTK, VTP, VTI, VTU, VTS, VTR file readers and parallel file readers
CGNS, FLUENT, FLUENT CFF file readers
STEP, IGES CAD file readers
LIDAR data in LAS format
A complete description of the supported file formats is available here.
Processing:
Clip filter
Contour filter
Streamlines
Probing, Resampling
Marching cubes, marching squares, flying edges, surface nets
Mesh smoothing
Mesh decimation
Delaunay, Voronoy
Octree, KdTree
Edges extraction
Point cloud reconstruction
Normals, tangents and texture coordinates computation
Selection extraction
Imaging:
Color transfer functions
Window Level rendering
Maximum Intensity Projection (MIP) rendering
MPR and Oblique rendering
Image mask and stencil
Image mathematics
Blend images, Stack images
Surface to image and image to surface conversion
Image threshold
Gaussian smoothing
Gradient, Laplacian computation
Interacting:
Point and cells picking
Rubber band selection
Line, spline, contour widgets
Distance and bi-dimensional ruler widget
ROI box widget
Plane widget
Point handle widget with arbitrary geometry
Interactive text widget
Rendering:
Order-independent transparency
Depth Peeling – Dual Depth Peeling
Line Integral Convolution
Iso value rendering
Physically Based Rendering
SSAO for meshes
SSAO for volumes
Light scattering model for volume rendering
Limitations
– OS support:
The VTK plugin has been implemented and tested for Windows only. Support for Linux, MacOS and Android might come in future versions.
– Unity Graphics API:
VTK relies on the OpenGL rendering backend, thus Unity graphics API must be set to OpenGLCore.
– Virtual and Augmented Reality:
Although VTK and ActiViz natively support rendering in VR and AR headsets such as the Hololens 2, the Unity support for OpenXR does not work with the OpenGLCore rendering backend. For this reason, the plugin only supports rendering in VR headsets using the Unity legacy VR support that is based on OpenVR and available in Unity 2019.
