LightCraft
Copyright (c) 2026 ArtCraft Team and the LightCraft contributors.
Licensed under the MIT License or the Apache License, Version 2.0, at your option
(LICENSE-MIT, LICENSE-APACHE).

The ArtCraft name, wordmark and logos in docs/brand/ are trademarks of the ArtCraft Team. They are
not open source and are not covered by the license above; their terms are in
docs/brand/LICENSE-brand.txt.

Third-party material

This product bundles third-party material under its own licenses, listed below. The per-file
list (author, source, license) is in assets/ATTRIBUTION.md.

Inter (assets/fonts/Inter-*.ttf) — SIL Open Font License 1.1. See assets/fonts/OFL-Inter.txt.
Showcase photographs by Ansel Adams, Dorothea Lange and NASA (docs/images/) — public domain. See assets/ATTRIBUTION.md.

crates/raw/src/spectral_table.rs (lightcraft-raw) holds camera colour matrices derived from the
camera spectral sensitivities, training reflectances and model alias list of rawtoaces-data
(https://github.com/AcademySoftwareFoundation/rawtoaces-data, v1.1.0), an Academy Software
Foundation project licensed under the Apache License 2.0, and from the CIE 1931 colour-matching
functions it ships (CIE, CC-BY-4.0). The matrices were fitted by the LightCraft contributors
(2026) with tools/spectral_camera_table.py. See assets/ATTRIBUTION.md.

crates/inpaint (lightcraft-inpaint) ports the inpainting (PatchMatch completion) and Poisson membrane
fill code of PhotoCraft (https://github.com/storytold/photocraft, crates/algo/src/inpaint.rs and
poisson.rs), Copyright the PhotoCraft contributors, licensed under the MIT License or the Apache
License 2.0, at your option. The port was modified by the LightCraft contributors (2026); each
ported file says so.

crates/segment (lightcraft-segment) ports the SAM 3 model code of Hugging Face Transformers
(https://github.com/huggingface/transformers, src/transformers/models/sam3 and sam3_tracker),
Copyright The HuggingFace Team and Meta Platforms, Inc., licensed under the Apache License 2.0.
The port was modified by the LightCraft contributors (2026): translated from Python/PyTorch to
Rust on candle and restructured; each ported file says so. Because of this, crates/segment is
licensed under the Apache License 2.0 only (LICENSE-APACHE), not under the MIT option.

The SAM 3 weights are not part of LightCraft and are never distributed with it. A user downloads
the facebook/sam3 checkpoint only when they choose to (in the app, or by hand), under Meta's SAM
License (https://github.com/facebookresearch/sam3/blob/main/LICENSE), a separate, non-OSI
licence. See docs/ai-masks.md.

AI denoise weights are not part of LightCraft and are never distributed with it.
The default build offers user-supplied models only. The optional rawnind-model
feature offers a separately downloaded RawNIND UtNet2 Bayer checkpoint under
GPL-3.0 (https://www.gnu.org/licenses/gpl-3.0.html), after the user accepts its terms.
Commercial use is subject to those terms, including applicable source, licence and
notice obligations on redistribution. Enabling that offer in releases remains a
maintainer decision. The ONNX reader and CPU/GPU executor are our Rust implementation;
no darktable, RawSpeed, LibRaw or other GPL decoder/runtime code is included.

Builds made with craft-fonts (the optional CRAFT_FONTS_DIR build input; all official releases)
also embed the fonts listed in https://github.com/storytold/craft-fonts/blob/main/ATTRIBUTION.md
(BIZ UDPGothic, BIZ UDMincho, Shippori Mincho, Noto Sans CJK SC, Noto Sans Arabic and Noto Sans
Thai), under the SIL Open Font License 1.1. The web build embeds BIZ UDPGothic Regular and Noto
Sans Thai Regular, and loads Noto Sans CJK SC separately. Release packages include each font's
licence as OFL-<family>.txt; Windows installers include their texts in FONT-LICENCES.txt.

Place names for reverse geocoding (Photo > Fill Location from GPS) are not part of LightCraft and
are never distributed with it. On the user's request (Photo > Download Place Names) the app
downloads cities15000.zip, admin1CodesASCII.txt and countryInfo.txt from GeoNames
(https://download.geonames.org/export/dump/) into the settings folder. GeoNames data is licensed
under Creative Commons Attribution 4.0 (https://creativecommons.org/licenses/by/4.0/);
attribution: "GeoNames, geonames.org". The lookup code (crates/geocode) is our own.