1860 - fotojockovic.com/1860
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Wet-plate collodion portrait (tintype / ambrotype / daguerreotype) from the phone camera.
Everything runs in the browser; no image leaves the device.

Our own work: exposure integration and stabilisation, Petzval optics, the two-hit tone model and its
calibration, plate defects and ageing, presentation, UI. Sources and licences of everything else:

1. stoatworks-labs/wetplate (MIT) - https://github.com/stoatworks-labs/wetplate
   Ideas and code patterns reused and adapted: thin-film drainage coating (thickness ~ sqrt of distance
   drained, after Jeffreys 1930), the seeded ragged bare edge, comets running down the drain direction,
   PCG hashing, and the presentation rule "silver intercepts 1 - 10^-D of the light, mix with the backing".
   Licence text below.

2. Spectral sensitivity of wet collodion: P. Skladnikiewitz, D. Hertel, I. Schmidt, "The Wet Collodion
   Process - A Scientific Approach", J. Imaging Sci. Technol. 42(5):450-458 (1998). The 40/60 Br/I curve
   as digitised by stoatworks. Our 3 linear-RGB weights (R 0.0768, G 0.0140, B 0.9092) are a least-squares
   fit of that curve over 190 measured reflectances under D65 (0.20 stop RMS on the ColorChecker); see
   dokumenta/tools/WETPLATE_RESEARCH.md. The daguerreotype weights come from an inferred AgI-only curve.

3. Tone model: developability as a Poisson two-hit process, D = Dmax (1 - e^-x (1 + x)), x = H/H0,
   with Dmax 1.35 and H0 0.241 (tintype). Fitted to tonal relations (backdrop / skin / dark wool) measured
   on The Met CC0 tintype 301944; highlight colour and black level calibrated on 301944 and ambrotype 291942.
   The mild over-exposure roll-off ("bromisation") is an inference, not a measured curve.

4. MediaPipe Tasks Vision (Image Segmenter) and the Selfie Segmenter model, Google LLC - Apache License 2.0.
   https://github.com/google-ai-edge/mediapipe , npm @mediapipe/tasks-vision 1.1.1,
   model: https://storage.googleapis.com/mediapipe-models/image_segmenter/selfie_segmenter/float16/latest/selfie_segmenter.tflite
   (model card: Apache-2.0). Files unchanged except the source-map comment removed from vision_bundle.js.
   Licence: mp/LICENSE-Apache-2.0.txt

5. Case, velvet pad and brass mat photographs: The Metropolitan Museum of Art, Open Access, CC0 1.0.
   - Object 301944, "Corporal Hiram Warner, Company C, Second United States Sharpshooters", tintype, 1861-62.
     https://www.metmuseum.org/art/collection/search/301944  (img/case_t.jpg)
   - Object 291942, "[Barrel Maker]", ambrotype, 1850s-60s, Bequest of Herbert Mitchell, 2008.
     https://www.metmuseum.org/art/collection/search/291942  (img/case_a.jpg)
   Public-domain status checked through the Met Collection API (isPublicDomain: true, 2026-10-14); the Met
   Open Access policy (github.com/metmuseum/openaccess) waives rights under CC0 for public-domain objects.
   The object pages themselves were behind a bot checkpoint at the time of checking.
   The original plates are covered by our rendering; the cases and mats are reproduced resized.

6. Table: "Dark Wood" texture, Poly Haven (Dario Barresi, Dimitrios Savva, Rico Cilliers), CC0.
   https://polyhaven.com/a/dark_wood  (img/wood.jpg, resized)

7. mp4-muxer 5.2.2, Vanilagy - MIT. https://github.com/Vanilagy/mp4-muxer  Licence: LICENSE-mp4-muxer.txt

8. Fonts (Google Fonts, SIL Open Font License 1.1): Playfair Display (Claus Eggers Sorensen),
   Old Standard TT (Alexey Kryukov), and as fallbacks for Greek text
   GFS Didot (Greek Font Society) and Noto Serif Display (Google). Only the glyph subsets a page needs are downloaded.

8a. Language flags in the language picker (/static/tools/common/i18n.js): simplified flag drawings made
   for these tools, our own work, no third-party artwork. The national flags themselves are public-domain
   symbols. Translations of the interface are our own.

9. Test images in test/ (debug mode only): NASA official portraits via Wikimedia Commons, public domain
   (Victor J. Glover, Kayla Barron, Michael Fincke, Artemis II crew).

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stoatworks-labs/wetplate licence:

MIT License

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furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
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SOFTWARE.