Two things, and the second is why the first matters more than expected.
Mask layers gain a feather, a falloff curve and a morphology, all defined
against a signed distance from the boundary rather than as separate
features — one exact distance field answers "how soft" and "how far" at
once, so dilation is a threshold at -r, erosion one at +r, and closing and
opening are one of each in sequence. The compound pair costs a second
distance field, which is why they are named rather than presented as a
radius that happens to be signed. Types, defaults and sidecar round-trip
only; the field itself is next.
`edge-feather` and `edge-falloff`, not `feather` and `falloff`, because a
radial mask already writes `feather` for the fraction of its radius it
ramps over. Same word, different quantity, different units — sharing the
key would have made an existing file ambiguous.
The diagnostic that provoked this is committed as an ignored test, because
"does the ladder land on things a person means" is the question S15 exists
to answer and it should not depend on whoever still has the script. On
bus.jpg it answers badly: 35,075 regions at blur 2 over an 810x1080 frame,
and cutting that to 400 gives *one* region covering nearly the whole
picture plus 399 noise specks. Not over-segmentation — collapse. Almost
every saddle is near zero, so the merge order joins everything meaningful
before it joins anything spurious, and a global cut spends its entire
budget on grain.
So the granularity ladder does not currently work on a photograph, and the
region masks built on it inherit that. Recorded rather than worked around:
the next commits move local masking onto the model's instances, where the
edge treatment above is what makes a quarter-resolution mask usable.
dtourolle
b1433ad4a9
