CWI partners with startup Raynetics on advanced 3D image reconstruction

Centrum Wiskunde & Informatica (CWI) has partnered with Raynetics, an Amsterdam-based deep-tech startup specializing in AI-driven 3D image reconstruction. As part of this collaboration, CWI group leader Tristan van Leeuwen has joined Raynetics' advisory board, contributing his expertise in computational imaging. In return, CWI has acquired a minority stake in the company.

Publication date
3 Jun 2025

Raynetics, co-founded by former CWI postdoctoral researcher Ajinkya Kadu, develops artificial-intelligence-based software that turns raw microscopy data into high-fidelity three-dimensional (3D) reconstructions. This enables atomic- to micro-scale characterization of materials in a relatively short time. The software can ingest datasets from scanning transmission electron microscopy (STEM), focused ion-beam scanning electron microscopy (FIB-SEM) and energy-dispersive X-ray spectroscopy (EDXS) elemental maps. Raynetics uses AI methods to generate volumetric models based on these datasets, to help analyze structure and composition of materials.

Identifying defects

Their technology is particularly valuable in many critical fields. In semiconductor manufacturing, engineers may be able to identify defects earlier and improve design processes. In advanced materials research, scientists can correlate internal architecture with mechanical, thermal and electrical performance, supporting the development of new materials with tailored properties. Manufacturers in additive manufacturing, energy storage and aerospace likewise can validate complex geometries and certify performance-critical parts.

Looking ahead, Raynetics is building a cloud-native platform where any user, anywhere, can drop in a dataset and access high-quality 3D visualization and analytical tools without needing in-house computational or imaging expertise.

Computational Imaging at CWI

CWI's Computational Imaging group, led by Tristan van Leeuwen, is internationally recognized for its work on mathematical techniques for image reconstruction. In 2017, the group established the FleX-ray Lab, a custom-built, fully automated X-ray CT scanner integrated with high-performance computing resources. This facility supports research into advanced 3D imaging methods in collaboration with partners across healthcare, science, industry, and cultural heritage sectors.

“Through the collaboration with Raynetics, CWI will gain broader insights into the commercial use-cases of computational imaging”, Van Leeuwen explains. “My role is to provide scientific and technological guidance to the company, ensuring it remains aligned with the latest developments in computational imaging.”