About RelightLab
Relight is a library and set of tools to create and view relightable images (RTI).
RelightLab 2026.01
A RTI app for creating and visualizing Reflectance Transformation Imaging
- By Visual Computing Lab - ISTI - CNR
- Open Source
- Updated Feb 20, 2026
What's new in 2026.01
Improved blur based normal flattening (faster, more accurate).
Much more accurate sphere reflections computation.
Queue tabs now working properly.
Bugfixes.
Technical details
| Publisher | Visual Computing Lab - ISTI - CNR |
|---|---|
| Version | 2026.01 |
| Release date | 2026-02-20 |
| License | GPL-3.0 |
| Installer type | zip, nullsoft |
| Architecture | x64 |
| Package ID | CNRISTI.RelightLab |
| Install scope | All users |
Install RelightLab from the command line
- Install with Windows Package Manager
winget install --id=CNRISTI.RelightLab -e- Update to the latest version
winget upgrade --id=CNRISTI.RelightLab -e- Uninstall
winget uninstall --id=CNRISTI.RelightLab -e- Silent install with the offline installer
"RelightLab2026.01-windows.exe" /S
RelightLab version history
2025.12 Dec 18, 2025
Frequently asked questions
Is RelightLab free?
Yes. RelightLab is free and open-source software released under the GPL-3.0 license.
What is the latest version of RelightLab?
The latest version is 2026.01, released on Feb 20, 2026.
Is it safe to download RelightLab?
The download button links to the official installer published on github.com, the same file Windows Package Manager installs. You can verify the downloaded file by comparing its SHA-256 checksum with 776a536eba91bf682f2e0c2b2d473d0c19ed4296d80043fdf5c6c66983a3f8be.
Which Windows versions does RelightLab support?
RelightLab runs on Windows and is available for 64-bit (x64) systems.
How do I install RelightLab silently?
Run the offline installer with "RelightLab2026.01-windows.exe" /S, or install it with Windows Package Manager: winget install --id=CNRISTI.RelightLab -e --silent.
How do I uninstall RelightLab?
Open Settings › Apps › Installed apps, find RelightLab and select Uninstall. From the command line, run winget uninstall --id=CNRISTI.RelightLab -e.
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