gramps
9f3c154d84
- Model: Google's official MediaPipe Selfie Segmenter (landscape, Apache-2.0 per model card), converted to ONNX by tools/selfie-seg/convert_tflite_to_onnx.py (custom op Convolution2DTransposeBias -> ConvTranspose) and verified against MediaPipe's own runtime (verify_against_mediapipe.py: max |diff| 5e-5, 100% binary agreement). Embedded resource, 430 KB. - Services/BackgroundEffects: IPersonSegmenter seam, OnnxPersonSegmenter (onnxruntime 1.31.0 CPU, never throws), BackgroundEffectProcessor (None passthrough, Remove = alpha mask). Not wired yet. - Tests: Remove integration test (fake segmenter) + bundled-model contract test vs MediaPipe reference mask. Full suite 407/408 — the one failure is the documented interactive-desktop flake RealMouseDrag_OnTheLayerList_PersistsTheReorder (passed in the run before; code path untouched). - Docs: ai.md reversal + section + licensing guard, THIRD-PARTY-NOTICES 11-12, TASK 51, indexes, MyMistakes recipe, HANDOFF. References: obs-backgroundremoval (approach only — ONNX Runtime on CPU, 2 threads; GPL-3.0, no code used) https://github.com/royshil/obs-backgroundremoval ; MediaPipe image segmenter https://ai.google.dev/edge/mediapipe/solutions/vision/image_segmenter
43 lines
2.6 KiB
Markdown
43 lines
2.6 KiB
Markdown
# HANDOFF — 2026-10-09 (TASK 51 slice 1 shipped: background-effects engine)
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## Branch
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- main (no feature branch). Pushed through `f8dd107`; the TASK 51 slice-1 commit sits on top,
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**not pushed** (push at the user's call).
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## Dirty files (NOT mine — do NOT commit or co-edit)
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- The in-flight "pinned chat" work unit: `Models/YouTube.cs`, `ViewModels/MainViewModel.Chat.cs`,
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`Controls/LeftPanel.xaml`, untracked `Helpers/RelayCommandGeneric.cs`.
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- The creator's untracked logo art in `Assets/` (`llamacasty text.*`, `llamacasty-text-nobg*.png`,
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`thin logo wordmark.png`).
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## What just happened — TASK 51 slice 1 (engine)
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- **Model:** Google's official MediaPipe Selfie Segmenter (landscape, 144×256, Apache-2.0),
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converted to ONNX by our own `tools/selfie-seg/convert_tflite_to_onnx.py` and **verified against
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MediaPipe's own runtime** (`verify_against_mediapipe.py`, max |diff| 5e-5). Embedded in the exe
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(`Assets/Models/selfie_segmenter_landscape.onnx`, 430 KB, in git).
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- **Code:** `Services/BackgroundEffects/` — `IPersonSegmenter` seam, `OnnxPersonSegmenter`
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(onnxruntime 1.31.0 CPU, never throws), `BackgroundEffectProcessor` (None passthrough, Remove =
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alpha mask, Blur = passthrough until slice 2). `Models/BackgroundEffect.cs` enum.
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- **Not wired:** nothing calls it yet — no config, UI, or camera hookup. Zero risk to the live path.
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- **Docs:** ai.md (stale "background removal PERMANENTLY OUT" bullet replaced by the reversal + a
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"Webcam background effects" section + a model-provenance licensing guard), THIRD-PARTY-NOTICES
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items 11 (ONNX Runtime, MIT) + 12 (MediaPipe model, Apache-2.0 with §4b change note),
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TASK 51 file + TASKS.md row, Services/Models indexes, MyMistakes conversion recipe.
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## Tests
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- Full suite **408 passed / 0 failed**, 0 build warnings. New: `BackgroundEffectEngineTests` (Remove
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integration test with a fake segmenter; bundled-model contract test vs a MediaPipe reference mask,
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fixtures in `ytLive.Tests/Fixtures/`).
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## Known issues / follow-ups
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- `onnxruntime.dll` is ~17 MB; an RID-less build copies every RID's native folder — TASK 48's MSIX
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publish must pin win-x64.
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- `THIRD-PARTY-NOTICES.txt` header still says "paid, closed-source product" (pre free-forever) — noted,
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not changed (out of scope).
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- Carried: "Use default background" toggle still not working (from 2026-10-07).
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## Next step
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- TASK 51 slice 2: **Blur** in `BackgroundEffectProcessor` (separable box/gaussian, strength), one
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integration test. Then slice 3 config + persistence, slice 4 camera-path hookup + perf check on the
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creator's box, slice 5 properties-panel UI.
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