fix: id type

README.md

@@ -1,4 +1,5 @@
 ---
+license: cc-by-nc-nd-4.0
 dataset_info:
   features:
   - name: id

helmet_detection.py

@@ -30,7 +30,7 @@ class FaceSegmentation(datasets.GeneratorBasedBuilder):
         return datasets.DatasetInfo(
             description=_DESCRIPTION,
             features=datasets.Features({
-                'id': datasets.Value('string'),
+                'id': datasets.Value('int32'),
                 'image': datasets.Image(),
                 'mask': datasets.Image(),
                 'bboxes': datasets.Value('string')