v0.2.12 release notes
v0.2.12 was released on August 31, 2026. It adds validated geometry-aligned DICOM SEG composition, publishes the editor through Open VSX for Cursor, and introduces a reproducible attributed-media workflow.
Geometry-aligned DICOM SEG overlays
Section titled “Geometry-aligned DICOM SEG overlays”- Pixel Preview remains the default. The viewer composes a SEG mask only when the selected SEG frame resolves to exactly one compatible local source frame.
- Explicit per-frame derivation references take precedence. When only top-level source instances are declared, the viewer can match classic single-frame source series through Frame of Reference, position, orientation, and pixel spacing.
- Compatible source and SEG grids may use different matrix dimensions. Binary and fractional masks are nearest-neighbor resampled through patient coordinates into a transparent source-sized overlay.
- Missing, ambiguous, non-coplanar, non-overlapping, and incompatible mappings remain unavailable with an explicit reason instead of being guessed.
Eligibility establishes a bounded display mapping, not clinical segmentation correctness. Recommended Display CIELab values are not yet interpreted, and ROI editing, interactive window/level, and cine are disabled in the composed view.
Internal API addition
Section titled “Internal API addition”GET /api/file/:index/frame/:frame/segmentation-overlay returns the validated transparent PNG. A successful response includes X-Cache; unavailable semantic mappings return HTTP 422 with semantic_mapping_unavailable. The viewer API remains an internal debugging and automation surface, not a stable third-party contract.
VS Code and Cursor
Section titled “VS Code and Cursor”The four target-specific VSIX packages are published under beatricebm.dcmview for Linux x64, macOS x64, macOS arm64, and Windows x64. VS Code uses the Visual Studio Marketplace; Cursor uses Open VSX. Both packages retain the existing workspace bridge, terminal interception, custom editor, and binary override behavior.
Reproducible release media
Section titled “Reproducible release media”The release gallery covers SEG, CT, radiography, mammography, PET, ultrasound, RT Dose, WSI, and the real VS Code Explorer workflow. Its lock binds the approved outputs to source checksums, capture inputs, the release commit, dimensions, tool versions, capture time, and reviewed modification summaries. Source imagery and licenses are listed in media attribution.
Compatibility
Section titled “Compatibility”v0.2.12 removes no CLI options and introduces no incompatible package-manifest changes. The v0.2.11 compatibility campaign remains the current broad qualification evidence because the new release changes bounded SEG geometry and composition rather than the qualified transfer-syntax table.
The campaign executed 169 valid objects, one legacy object, 15 negative cases, 139 stress files, and 24,465 deterministic fuzz target operations without crashes, timeouts, unacceptable outcomes, or failed required assertions. This is research-inspection evidence, not clinical validation or a DICOM conformance certificate.
See DICOM and pixel support for the interpreted boundary and documentation source for the exact release commit.