fix(yolo): round polygon coords before int cast to improve mask accuracy

supervision/dataset/formats/yolo.py

@@ -117,7 +117,8 @@ def yolo_annotations_to_detections(
         return Detections(class_id=class_id, xyxy=xyxy, data=data)
 
     polygons = [
-        (polygon * np.array(resolution_wh)).astype(int) for polygon in relative_polygon
+        np.round(polygon * np.array(resolution_wh, dtype=np.float32)).astype(int)
+        for polygon in relative_polygon
     ]
     mask = _polygons_to_masks(polygons=polygons, resolution_wh=resolution_wh)
     return Detections(class_id=class_id, xyxy=xyxy, data=data, mask=mask)

test/dataset/formats/test_yolo.py

@@ -168,6 +168,24 @@ def test_with_mask(
             ),
             DoesNotRaise(),
         ),  # yolo annotation file with two lines - one box and one polygon
+        (
+            ["0 0.4056 0.4078 0.5967 0.4089 0.5978 0.6012 0.4067 0.5989"],
+            (1000, 1000),
+            True,
+            Detections(
+                xyxy=np.array([[405.6, 407.8, 597.8, 601.2]], dtype=np.float32),
+                class_id=np.array([0], dtype=int),
+                mask=np.array(
+                    [
+                        _mock_simple_mask(
+                            resolution_wh=(1000, 1000), box=[406, 408, 598, 601]
+                        )
+                    ],
+                    dtype=bool,
+                ),
+            ),
+            DoesNotRaise(),
+        ),
     ],
 )
 def test_yolo_annotations_to_detections(