PGNet baseline finalized at step1-20260520_0937 (epoch 8, f_score_e2e 0.144).
Documented diagnostic history including misdiagnoses (cv2 viz misled "Korean
failure", char-level polygon hypothesis disproved by code reading) and
verified facts (single-line Korean works, two-line region names fail,
official PGNet step1 is "still low" by design, no Korean PGNet pretrained
publicly exists).
Next direction shifted toward YOLO + PaddleOCR 2-stage given (a) no Korean LP
PGNet validation cases in literature, (b) standard Korean LP pipeline uses
2-stage with reported 95%+ accuracy, (c) PGNet step2 effect unverifiable
without real data.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
songhyeonsoo