The upstream repository ships float32 only, at 105 MB, which is more than a web
page should ask a visitor to download before it can show anything. This export
is 28.9 MB.
Fidelity
Measured against the float32 original on three scenes, at 322 px input:
Scene
Pearson r
float32 time
8-bit time
Portrait, deep background
0.9977
218 ms
101 ms
Indoor, mid range
0.9902
171 ms
113 ms
Indoor, close range
0.9984
127 ms
90 ms
Distinct depth levels surviving in the far third of the frame, after the
percentile normalisation and 8-bit transport a real viewer applies: 179 → 177,
84 → 91, 50 → 53. The quantisation does not cost background structure.
