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Process images and create 3D computer graphics with the Visualization Toolkit.
The Visualization Toolkit (VTK) is open source software for manipulating and displaying scientific data. It comes with state-of-the-art tools for 3D rendering, a suite of widgets for 3D interaction, and extensive 2D plotting capability.
VTK is part of Kitware’s collection of supported platforms for software development. The platform is used worldwide in commercial applications, as well as in research and development. For examples, please see VTK in Action.
Post-processing Smoothed-Particle Hydrodynamics (SPH) using ParaView
Following Kitware’s participation in the PARTICLES25 conference last October, including the presentation of a survey paper, this article provides an overview of current approaches for post-processing SPH data in ParaView.
Smoothed Particles Hydrodynamics, or SPH for short, is a mesh-free fluid simulation method used in a variety of fields, including hydrodynamics and astrophysics. SPH uses particles to represent mass: each particle has a position, a velocity, and discretizes continuous fields such as pressure in space using kernel functions around their position. Many physics solvers using SPH, such as DualSPHysics or OpenRadioss, can run in parallel on supercomputers, simulating billions of particles at once. This creates a challenge for visualization, as direct rendering of a large number of particles as points or spheres does not always give scientifically interesting results.
🐝 VESPA 1.0 is out now!
We are excited to announce that VESPA is mature enough for its official 1.0 release! VESPA (VTK Enhanced with Surface Processing Algorithm) is a VTK module and a ParaView plugin dedicated to mesh and surface processing. VESPA brings the power of the CGAL (Computational Geometry Algorithms Library) library into VTK and ParaView workflows. By wrapping […]
VTK Hackathon – May 13, 2026
On May 13, 2026, the Visualization Toolkit (VTK) developer community gathered for a hands-on hackathon. As an open source project, VTK relies on the contributions of its community, and this event highlighted the collective effort to maintain and improve the toolkit. The objectives for the day included reducing technical debt, triaging issues, stabilizing builds, and […]