New engines, each calibrated on its TC260 USCC cohort and validated by a
full-corpus sweep (42009 files):
- runninghub: top-left corner (new corner="tl"), faint mid-gray text via
the new raw-grayscale "gray" detection front-end, anchor-position gate
- baidu: text-run-only template (pill is a bright-blob magnet), load-bearing
Doubao+Qwen rival margins, corner-extended footprint for the white tag
- liblib: bottom-center (new corner="bc"), Arial silhouette (font is the
discriminative lever against latin UI text), logo-extended footprint
Qingyan parked (no clean-arm separation at any render/box), MiniMax/Hailuo
parked (1 visible frame, the xinghui rule); silhouettes kept as starting
points.
Kling (USCC cohort 91110108335469089C, n=30): kling_engine.py, gate 0.35
(clean p99 0.304 / max 0.320), strict-only, unimodal 0.12/short on the
shared ladder, fitted locate box, no rival margin (crossfire 1/400 doubao
below gate, 0 jimeng, 0 clean), parity 9/9 detect->fill->re-detect.
Suppresses the jimeng pill like doubao/qwen. identify gains visible_kling.
Yuanbao: measured negative -- the two-line italic block does not separate
from clean corners on either front-end at any render/box/font setting;
the fitted recipe stays in render_vendor_silhouettes.py MARK_OPTS.
cat-logo: cohort has only 2 unique carriers, parked on evidence; the
draw_catlogo silhouette already separates (0.50 vs clean max 0.333), so
registration is a gate pick once more uniques arrive.
vendor_mark_calibrate: --fit-geometry takes locate-box overrides (two-line
marks were clipped by the inherited box) and the aspect sweep reaches 0.62.
Calibrated on the 117-frame TC260-producer cohort (vendor_cohort_harvest +
vendor_mark_calibrate, both committed here): per-mark 2-rung ladder
(0.78, 1.27) for the two measured size modes, fitted locate box (the mark
sits ~0.025 of the short side off the edge; doubao's box clipped the first
glyph), measured template aspect 0.26, gate 0.45 (clean p99 0.301).
Strict-only (the sub-gate band is non-Qwen banners), no rival margin
(0 cross-fires on 400 doubao / 298 jimeng / 286 clean frames).
83/83 real marks detector-clean after cv2 fill.
TextMarkConfig gains a per-mark ladder field; the shipped 3-rung default
is unchanged for every other mark.
Victor Kuznetsov