TRUNCATED_WIDTH_RATIOをコンフィグ化してdefault.yamlから変更できるように

src/face_geometry.py

@@ -3,8 +3,6 @@
 from .config_loader import FaceSettings
 from .models import FaceROI, TrackedPerson
 
-TRUNCATED_WIDTH_RATIO = 0.45
-
 def create_face_roi(person: TrackedPerson, frame_width: int, frame_height: int, config: FaceSettings) -> FaceROI | None:
     """Create a clipped upper-body ROI or return None when the track is ineligible."""
     if config.require_confirmed_track and not person.is_confirmed:
@@ -14,7 +12,7 @@ def create_face_roi(person: TrackedPerson, frame_width: int, frame_height: int,
     bbox = person.bbox
     candidate_height = bbox.height * config.roi_height_ratio
     if bbox.y2 >= frame_height - 2:
-        candidate_height = max(candidate_height, bbox.width * TRUNCATED_WIDTH_RATIO)
+        candidate_height = max(candidate_height, bbox.width * config.roi_truncated_width_ratio)
     expand_x = bbox.width * config.roi_expand_ratio
     expand_y = candidate_height * config.roi_expand_ratio
     y1 = max(0, round(bbox.y1 - expand_y))