lhk229
b0a634dfd4
Add bgfilter/recolor.py: after despill, propagate clean neighbour chroma into pixels whose colour is still off (residual green, or the magenta a green unmix overshoots into), keeping luminance partway so hair texture survives. It installs a real observed colour rather than subtracting, so it cannot overshoot. Despill already neutralises the matte edge (off ~ 0 there), so recolor only touches the contaminated interior and the wisps the dropout-fill rescued. Runs as a final colour pass on the despilled foreground; pymatting + despill keep their stronger edge handling. On the samples the magenta fringe drops sharply (TestImage vis-magenta 0.065->0.014, TestImage2 0.085->0.031) with edge green unchanged (vis-green ~0.02). Debug output color_mask.png replaces the despill / foreground-background / foreground-correction maps; smoke updated. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
121 lines
4.0 KiB
Python
121 lines
4.0 KiB
Python
from __future__ import annotations
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from dataclasses import dataclass
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@dataclass(frozen=True)
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class ChromaSettings:
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green_margin: float = 0.08
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min_green_value: float = 0.22
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min_saturation: float = 0.20
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hue_low: float = 35.0
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hue_high: float = 95.0
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border_ratio: float = 0.04
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min_samples: int = 2048
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hue_sigma_min: float = 7.0
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lab_sigma_min: float = 10.0
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rgb_sigma_min: float = 0.08
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@dataclass(frozen=True)
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class TrimapSettings:
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sure_bg_threshold: float = 0.92
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sure_fg_threshold: float = 0.12
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unknown_radius_ratio: float = 0.012
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fg_safe_radius_ratio: float = 0.006
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min_unknown_radius: int = 4
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min_fg_safe_radius: int = 2
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# Semantic fusion thresholds (used by fuse_trimap when segmentation is on).
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seg_core_threshold: float = 0.60
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seg_loose_threshold: float = 0.08
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@dataclass(frozen=True)
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class AlphaPostSettings:
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min_component_area_ratio: float = 0.00001
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fill_hole_area_ratio: float = 0.00002
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alpha_floor: float = 0.002
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alpha_ceil: float = 0.998
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# Chroma-guided alpha suppression: in the unknown band, pull alpha toward 0
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# where background (green) confidence is high, clearing spill in gaps/holes.
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chroma_suppress: bool = True
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chroma_suppress_bg_low: float = 0.35
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chroma_suppress_bg_high: float = 0.80
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chroma_suppress_strength: float = 1.0
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# Segmentation dropout-fill: rescue alpha where ViTMatte cut a region the
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# semantic mask asserts is foreground (green-contaminated wisps it cannot see).
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seg_fill: bool = True
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seg_fill_alpha_max: float = 0.10
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seg_fill_seg_min: float = 0.10
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seg_fill_strength: float = 0.70
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@dataclass(frozen=True)
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class ForegroundSettings:
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enabled: bool = True
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method: str = "ml" # "ml" (pymatting) or "unmix" (legacy heuristic)
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fallback_to_unmix: bool = True
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ml_regularization: float = 1e-5
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# Legacy "unmix" method parameters (used only when method == "unmix").
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edge_low: float = 0.005
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edge_high: float = 0.995
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min_unmix_alpha: float = 0.08
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unmix_strength: float = 0.70
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local_strength: float = 0.45
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local_blur_radius: int = 11
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local_alpha_threshold: float = 0.92
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local_bg_confidence_max: float = 0.20
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green_excess_margin: float = 0.015
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bg_confidence_weight: float = 0.70
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@dataclass(frozen=True)
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class DespillSettings:
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enabled: bool = True
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edge_low: float = 0.005
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strength: float = 0.92
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green_excess_margin: float = 0.015
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edge_expand_radius: int = 2
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alpha_weight_floor: float = 0.35
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@dataclass(frozen=True)
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class RecolorSettings:
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enabled: bool = True
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person_threshold: float = 0.5 # clean reference = subject above this seg/alpha
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coverage_soft: float = 0.08 # recolour ramps in over alpha 0..this
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contam_low: float = 0.02 # residual off-colour where recolour starts
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contam_high: float = 0.12 # residual off-colour for full recolour
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clean_dom_max: float = 0.03 # reference = subject pixels below this off-colour
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propagate_radius_ratio: float = 0.02
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min_reference_weight: float = 0.05
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luminance_strength: float = 0.5 # how far to pull luminance to the clean neighbour
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@dataclass(frozen=True)
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class ModelSettings:
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model_name: str = "hustvl/vitmatte-small-composition-1k"
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device: str = "cuda"
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matting_method: str = "vitmatte"
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fallback_to_chroma_alpha: bool = False
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@dataclass(frozen=True)
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class SegmentationSettings:
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enabled: bool = True
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model_name: str = "ZhengPeng7/BiRefNet"
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device: str = "cuda"
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input_size: int = 1024
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@dataclass(frozen=True)
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class PipelineSettings:
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chroma: ChromaSettings = ChromaSettings()
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trimap: TrimapSettings = TrimapSettings()
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alpha_post: AlphaPostSettings = AlphaPostSettings()
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foreground: ForegroundSettings = ForegroundSettings()
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despill: DespillSettings = DespillSettings()
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recolor: RecolorSettings = RecolorSettings()
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model: ModelSettings = ModelSettings()
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segmentation: SegmentationSettings = SegmentationSettings()
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