Victor Kuznetsov
95f467b4ad
detect_doubao_frame reuses the image engine's synthetic doubao alpha as its video template, so the glyph cannot drift between registries. The policy is seedance-style single-floor, calibrated by sequential decode over 39 TC260-confirmed Doubao corpus videos and 25 negatives: a 12-frame stable run at 0.35 accepts 33/39 positives and 0/25 negatives (0.30 already accepted a negative), and through the shipped arbiter identify_video selects 32/39 with no false selection. Also documents the measured impossibility of a bare-pill removal arm with the current detector (68 OCR-confirmed pills max 0.317 vs clean negatives max 0.353 -- no separating threshold exists).
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.