Raspberry Pi Camera Tuning Tool (CTT)

Camera Tuning Tool for generating libcamera JSON tuning files for Raspberry Pi cameras. Takes DNG calibration images and produces tuning parameters for the PiSP or VC4 ISP platforms.

Documentation

• Installation — installing from PyPI or a local checkout, optional extras, Raspberry Pi notes
• CTT server — web UI for capturing, tuning and inspecting results, served from the Pi
• CTT CLI — command-line usage, options, configuration and calibration image requirements
• Device control — USB lightbox control and light-meter readout (APIs plus the ctt-lightbox and ctt-lightmeter CLIs)
• Developers — repository layout, linting, tests and packaging

License

BSD-2-Clause - Copyright (C) 2026, Raspberry Pi