📦 WP-094 — feat(data): DOTA tiles into a trainable layout¶
Engineering log · Phase 8 — Oriented detection, v0.3.0
🔗 Depends on WP-057, WP-088 · Needed by WP-095, WP-096, WP-098, WP-100
WP-094 — the difficult flag died at the loader¶
WP-057 manufactures difficult instances at crop time and A51 defines the channel they are supposed to travel on, but nothing connected the two: the reader did not forward difficult out of the annotation record, so every instance the tiler had flagged arrived at the loss indistinguishable from a whole one. Nothing disagreed anywhere — the counts are right, the boxes are right, and the only thing wrong is that a protocol decision the register spent a row on was not in force.
A53's non-schema keys are what make the flag survivable through a COCO container at all, since COCO's schema has no field for it or for the tile's window provenance, and a standard reader ignores both and still sees an ordinary detection set.