class_docstr: RoI head for `Double Head RCNN <https://arxiv.org/abs/1904.06493>`_.
  
  Args:
      reg_roi_scale_factor (float): The scale factor to extend the rois
          used to extract the regression features.
code: def __init__(self, reg_roi_scale_factor: float, **kwargs):
      super().__init__(**kwargs)
      self.reg_roi_scale_factor = reg_roi_scale_factor
  
file_path: mmdetection/mmdet/models/roi_heads/double_roi_head.py
imports: from typing import Tuple
  from torch import Tensor
  from mmdet.registry import MODELS
  from .standard_roi_head import StandardRoIHead
label_desc: Use image node_id 1 to create a new DoubleHeadRoIHead object from inherited base classes: StandardRoIHead with example: obj = DoubleHeadRoIHead(reg_roi_scale_factor)