remove-ai-watermarks/data/fixtures/visible/README.md

Visible-mark example gallery

One committed example per registered visible mark, so the repository carries a working sample of everything it supports. tests/test_visible_examples.py holds both sides to it: a mark registered without an example fails the suite, and so does an engine that stops detecting its own example.

What these files are

Every example is SYNTHETIC: scripts/render_visible_examples.py composites the mark's committed silhouette (the same font-rendered asset the detector matches) onto a deterministic generated base photo at the engine's measured geometry. The silhouettes are repository-owned font renders generated by scripts/render_vendor_silhouettes.py; the gallery does not copy vendor raster assets.

The examples demonstrate DETECTION geometry and house style, not vendor raster fidelity; real-world variants (fonts, opacities, sizes) are covered by the engines' recorded calibration evidence.

Regeneration

uv run python scripts/render_visible_examples.py

The generator self-verifies: it fails (exit 1) if any registered mark does not detect on its own example, so regeneration is the fix point for drift.

Layout

<mark-key>/example.png   1536x2048..2048x2048 PNG, one per image mark
<mark-key>/example.mp4   960x540 90-frame clip, one per video mark
                        (kling carries both: it is registered in both registries)

Special cases: gemini composites the sparkle alpha map at the provider's configured position; jimeng_pill is the capture-less pill at the measured 3:4 portrait geometry; microsoft is the opaque white pill with dark text holes (the discriminator its detector keys on). Video examples composite the detector's own synthetic template on every frame; where two marks share a shape family the example carries the discriminative variant (veo the legacy text form, kling the logo-plus-wordmark pair flush to the edge), because the temporal selection resolves cross-template ties by table order.