Update app.py

added calc area function

app.py

@@ -77,6 +77,12 @@ def load_sam_predictor():
                 return False
     return sam_predictor is not None
 
+def calculate_bbox_area(bbox: List[float]) -> float:
+    """Calculate the area of a bounding box [x1, y1, x2, y2]"""
+    width = abs(bbox[2] - bbox[0])
+    height = abs(bbox[3] - bbox[1])
+    return width * height
+
 def filter_bbox_outliers(detections: List[Dict], 
                         method: str = 'iqr', 
                         threshold: float = 1.5,