good_min_area = 0 disabled visioncortex's thread-like rejection (which was
gated on good_min_area > 0). Reintroduce it in our repo as a finish-phase
step: Segmentation::filter_thin drops regions whose perimeter >= area
(average thickness under ~2px), using the same Shape::image_boundary_list
metric so the heuristic matches. It's toggleable on a cached segmentation
(Config::filter_thin, on by default), unlike the clustering-time version.
Exposed via CLI --keep-thin, Python filter_thin, and Node filterThin. Adds
RegionMask::perimeter/is_thin and a reuse test toggling it on one cached
segmentation. Clean-image goldens are unaffected (large regions aren't thin).
BinaryFrontend gains a Threshold enum: Fixed(u8) (now tunable, was
hardcoded to 128) and Adaptive { window, t } — Bradley–Roth adaptive
thresholding computed via visioncortex's SummedAreaTable, O(pixels)
regardless of window size, for images with uneven lighting. Both use a
shared (r+g+b)/3 intensity so they agree on "dark"; the grayscale
checker_bw golden is unaffected.
Exposed through Config and all bindings: CLI (--threshold, --adaptive,
--adaptive-window, --adaptive-t), Python (constructor kwargs + getters/
setters), and the Node package (binaryThreshold, adaptive, adaptiveWindow,
adaptiveT). Adds tests covering fixed tunability and adaptive recovering
locally-dark marks under a brightness gradient that a global cutoff can't.
image-webp is pure Rust and compiles to wasm32; brings the npm
package's input formats closer to the CLI/Python surface. Wasm grows
~115 KB (486 KB -> 601 KB). Also gitignore nodejs/.npmrc.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Publish under the @visioncortex npm org. Add publishConfig.access=public for
the scoped package and update the install/require examples in both READMEs.
nodejs/scripts/publish.mjs builds the wasm (wasm-pack), runs the smoke test,
then `npm publish` to a configurable registry (default a local one at
http://localhost:4873; override via --registry= or NPM_REGISTRY). Supports
--dry-run. Wired as `npm run publish:local`.
New nodejs/ package: a wasm-bindgen crate (vtracer-wasm) built with wasm-pack
that wraps the vtracer framework, plus a thin JS layer for file I/O. Image
decoding (png/jpeg/gif/bmp via the image crate) runs in wasm too, so the
package has zero native dependencies — no sharp, no node-gyp.
No separate general-purpose wasm crate: the Node package directly owns and
wraps the wasm. Excluded from the cargo workspace (wasm-bindgen cdylib), built
with wasm-pack.
JS API (camelCase options): convertBuffer, convertPixels, convertFile,
convertFileSync — each taking an Options object (preset, colorMode,
hierarchical/cutout mosaic, mode, palette, maxColors, optimize, ...). Ships
index.d.ts types and a node smoke test. README updated.
Verified: builds to wasm32-unknown-unknown; `node test.js` passes; output
matches the CLI/Python bindings (253 paths on the tank sample).
Chris Tsang