CLAHE, TILE BY TILE
THE FOUR TILE CURVES
BILINEAR WEIGHTS
THIS TILE'S HISTOGRAM — GOLD EXCEEDS THE CEILING — CLIPPED OFF, SPREAD EVENLY
4.0× uniform — caps every curve's slope at 4.0× Drag the probe. Its input value crosses the four surrounding tiles' curves; the rectangle diagram weighs the four answers by closeness. Switch to nearest tile only to see why the blending exists.