Add foreground color estimation pass

bgfilter/config.py

@@ -8,6 +8,7 @@ from .settings import (
     AlphaPostSettings,
     ChromaSettings,
     DespillSettings,
+    ForegroundSettings,
     ModelSettings,
     PipelineSettings,
     TrimapSettings,
@@ -41,7 +42,7 @@ def _update_dataclass(instance: T, values: dict[str, Any] | None) -> T:
 
 
 def settings_from_dict(data: dict[str, Any]) -> PipelineSettings:
-    allowed_sections = {"chroma", "trimap", "alpha_post", "despill", "model"}
+    allowed_sections = {"chroma", "trimap", "alpha_post", "foreground", "despill", "model"}
     unknown_sections = sorted(set(data) - allowed_sections)
     if unknown_sections:
         raise ValueError(f"Unknown config section(s): {', '.join(unknown_sections)}")
@@ -50,6 +51,7 @@ def settings_from_dict(data: dict[str, Any]) -> PipelineSettings:
         chroma=_update_dataclass(ChromaSettings(), data.get("chroma")),
         trimap=_update_dataclass(TrimapSettings(), data.get("trimap")),
         alpha_post=_update_dataclass(AlphaPostSettings(), data.get("alpha_post")),
+        foreground=_update_dataclass(ForegroundSettings(), data.get("foreground")),
         despill=_update_dataclass(DespillSettings(), data.get("despill")),
         model=_update_dataclass(ModelSettings(), data.get("model")),
     )
@@ -65,6 +67,7 @@ def override_settings(settings: PipelineSettings, **overrides: Any) -> PipelineS
     chroma = settings.chroma
     trimap = settings.trimap
     alpha_post = settings.alpha_post
+    foreground = settings.foreground
     despill = settings.despill
     model = settings.model
 
@@ -91,6 +94,7 @@ def override_settings(settings: PipelineSettings, **overrides: Any) -> PipelineS
         chroma=chroma,
         trimap=_update_dataclass(trimap, trimap_updates),
         alpha_post=alpha_post,
+        foreground=foreground,
         despill=_update_dataclass(despill, despill_updates),
         model=_update_dataclass(model, model_updates),
     )