Metal and jewellery
⬜ placeholder · a skeleton only: ask for this method and it reports “not decided yet” · the worked example’s picture has none · the method name and where a person writes it: appendix G
How an artist paints it
Metal works by contrast: a hard-edged highlight and a hard-edged dark reflection pressed right against each other, with the local colour only in between; on a curved surface the highlight is a band and on a flat one a patch; and there is a brighter reflection around the edge. A gem is several hard-edged light and dark patches (its facets) plus one highlight point. Jewellery is small and often just a few strokes: one bright band, one dark one, one point.
What it looks like in the source
A diffusion model paints metal with strong contrast and hard edges, distinguishable from fabric; but a small piece of jewellery is only a few pixels at 1x, and segmentation tends to merge it into the part beside it.
Our method ⬜
No code. Choosing method="metal" passes the parts table and reports “the method for metal and jewellery is not decided yet” when painting starts.
Layers (as envisaged)
Metal/: Shape -> _Flat -> _Deep/ (the dark reflection) -> _Light/ (the highlight band and the highlight point) -> _Line.
How a person writes it in
"Brooch": dict(method="metal"), # not decided yet; painting reports it
Criteria
The per-group rulers, and whether the highlight and the dark reflection really are pressed against each other (for a person to look at).
What has to be decided
- Whether these hard edges belong to a Shape or to strokes.
- Whether a piece of jewellery only a few pixels across is banded at all, or treated whole as one
lightpoint. - Whether a reflection’s colour is sampled from its surroundings or fixed.
- Segmentation: whether jewellery needs a group of its own, and which SAM word.
On origin
The worked example’s picture has no metal or jewellery.