lhk229
c56e58affe
Backports master's non-flat matting (chroma.enabled: false + the hue-free cross-check gate) into server-edition, and exposes it over HTTP without surfacing the internal "chroma" wording: /remove-background gains a background_mode form field (flat, default | complex). complex maps to chroma disabled -- no colour key, segmentation alone drives the trimap and every colour-keyed stage (auto-detect, hue split, chroma suppression, despill) is bypassed. The cross-check veto still works in complex mode via its second-opinion-confidence gate (cross_check.second_lo/hi) but defaults OFF there (it costs the HR-matting forward); an explicit cross_check=on re-enables it. No new model weights: complex mode reuses the already-provisioned BiRefNet seg + ViTMatte (+ optional HR-matting cross-check). Flat mode is unchanged (bit-identical), and server-edition's own extras (cross_check.lock, foreground.use_gpu CuPy path) are preserved -- the port is surgical, not a copy of master's files. - settings: ChromaSettings.enabled, CrossCheckSettings.second_lo/hi - config: override_settings chroma passthrough - despill/foreground: model=None safe guards (foreground keeps GPU path) - alpha_post: cross_check_alpha hue-free gate when proj is None - pipeline: _process_rgb complex branch (seg-only trimap, skip colour stages) - service/app: process(chroma=), background_mode field, complex-defaults-off cross-check, X-BGFilter-Background-Mode header - cli: --chroma/--no-chroma - configs/docs: gpu.yaml + default.yaml + README/README_ZH Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
76 lines
2.1 KiB
YAML
76 lines
2.1 KiB
YAML
# GPU lane: CUDA + bf16 across all three models. Full pipeline (BiRefNet seg +
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# ViTMatte + HR-matting cross-check). Foreground estimation auto-uses the CuPy GPU
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# backend when cupy is installed (see foreground.use_gpu, default on). despill is
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# off (it false-positives on subjects sharing the background hue).
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screen_color: null
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chroma:
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# true = flat-colour background (default). false = non-flat/complex background
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# mode: no colour key; segmentation alone drives the trimap (mode forced to
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# "seg") and the colour-keyed stages are bypassed (auto-detect, hue split,
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# chroma suppression, despill). The cross-check veto still runs if enabled,
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# using its hue-free gate (cross_check.second_lo/hi). The service selects this
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# per request via background_mode=flat|complex; this is only the base default.
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enabled: true
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model:
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model_name: hustvl/vitmatte-base-composition-1k
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device: cuda
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matting_method: vitmatte
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fallback_to_chroma_alpha: false
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precision: bf16
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attn_query_chunk: 2048
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segmentation:
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enabled: true
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backend: birefnet
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model_name: ZhengPeng7/BiRefNet
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device: cuda
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input_size: 1024
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precision: bf16
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trimap:
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sure_bg_threshold: 0.92
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sure_fg_threshold: 0.12
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unknown_radius_ratio: 0.012
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fg_safe_radius_ratio: 0.006
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seg_core_threshold: 0.60
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seg_loose_threshold: 0.08
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mode: directional
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seg_low: 0.15
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bg_hue_proj_min: 4.0
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seg_force_fg: 0.98
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alpha_post:
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chroma_suppress: true
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chroma_suppress_bg_low: 0.35
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chroma_suppress_bg_high: 0.80
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chroma_suppress_strength: 1.0
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suppress_raw_lo: 0.85
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suppress_raw_hi: 0.98
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cross_check:
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enabled: true
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model_name: ZhengPeng7/BiRefNet_HR-matting
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input_size: 2048
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reuse_as_seg: false
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precision: bf16
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proj_min: 3.0
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l_min: 45.0
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feather_sigma: 2.0
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gate_lo: 0.70
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gate_hi: 0.95
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# Complex-background (non-flat) mode only: no hue-defined suspect zone, so the
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# veto requires the second opinion itself to be confidently near-empty -- full
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# strength at/below second_lo, fading to none at/above second_hi.
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second_lo: 0.15
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second_hi: 0.40
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foreground:
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enabled: true
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method: ml
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ml_regularization: 0.00001
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despill:
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enabled: false
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