3 people 401abc48a9 Content-Aware tools: Photoshop's behaviour, measured (#2202) ...

* Content-Aware tools: Photoshop's behaviour, measured

Photoshop 25.4 was measured as a black box (synthetic and public-domain
images, results read back exactly) and the content-aware family follows it:

- Fill (inpaint): coarse to fine with the coarser level's matches scaled up
  and voted with the finer level's own pixels, the coarsest level filled
  from the hole's edge inwards, a shallower pyramid. The fill is pieces of
  the image copied pixel for pixel with narrow seams, as Photoshop's;
  before, it was visibly blurred. Pixels have roles (hole, context,
  source, void), so excluded areas stay context instead of being filled.
- Colour adaptation: Image Melding's per-patch gain and bias, limited per
  level, instead of a low-frequency membrane pull.
- Sampling window: Photoshop's square of side 4·√(max(w,50)·max(h,50))
  centred on the selection, slid inside the canvas; Edit › Fill,
  Rectangular, Auto, Delete and Fill and Spot Healing use it.
- Auto sampling area: what looks like the selection's surroundings (local
  colour and contrast, one min cut), fitted to Photoshop's overlay.
- Patch Tool: a Content-Aware mode (Structure, Color, Sample All Layers).
- Content-Aware Move: Structure 3..7 alike, a band about a patch wide;
  Color as a gain/bias limited to about 0.04 per step.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

* Remove tool: keep its own sampling margin (fill_cmds::sampling_margin is gone)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

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Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Co-authored-by: Brandon Thomas <echelon@gmail.com>

2026-10-10 06:08:47 -04:00

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tests.rs

Content-Aware tools: Photoshop's behaviour, measured (#2202)

2026-10-10 06:08:47 -04:00