code: def _parse_bbox(self, obj):
      # Format reference:
      # www.tensorflow.org/datasets/api_docs/python/tfds/features/BBoxFeature
      ymin, xmin, ymax, xmax = obj[self.bounding_box_field]
      w = xmax - xmin
      h = ymax - ymin
      return xmin, ymin, w, h
  
imports: import fiftyone.core.labels
  import fiftyone.core.utils
  import fiftyone.types
  import fiftyone.utils.imagenet
  import fiftyone.utils.data
  import fiftyone.zoo.datasets
label_desc: Use image node_id 5 for calling the _TFDSImageDetectionSampleParser obj's underlying member method code with example usage: obj._parse_bbox(obj) and returns: xmin,  ymin,  w,  h