Support dense full-AOI building evaluation

scripts/evaluate_belgium_building_candidate.py

@@ -82,6 +82,12 @@ def main() -> int:
     parser.add_argument("--split", default="val")
     parser.add_argument("--augment", action="store_true", help="Enable deterministic YOLO test-time augmentation.")
     parser.add_argument("--imgsz", type=int, default=640)
+    parser.add_argument(
+        "--max-det",
+        type=int,
+        default=1000,
+        help="Maximum detections retained per tile; dense Belgian urban tiles exceed YOLO's default 300.",
+    )
     args = parser.parse_args()
 
     from ultralytics import YOLO
@@ -106,6 +112,7 @@ def main() -> int:
         device=args.device,
         augment=args.augment,
         imgsz=args.imgsz,
+        max_det=args.max_det,
         verbose=False,
     )
     observations: list[dict[str, Any]] = []
@@ -155,6 +162,7 @@ def main() -> int:
         "match_iou": args.match_iou,
         "test_time_augmentation": args.augment,
         "inference_imgsz": args.imgsz,
+        "max_detections_per_tile": args.max_det,
         "tile_count": len(tiles),
         "sweeps": sweeps,
     }