class_docstr: Implementation of Region Proposal Network.
class_docstr_tok: ["Implementation","of","Region","Proposal","Network","."]
docstr: Dummy forward function.
docstr_tok: ["Dummy","forward","function","."]
code: def forward_dummy(self, img):
      """Dummy forward function."""
      x = self.extract_feat(img)
      rpn_outs = self.rpn_head(x)
      return rpn_outs
  
file_path: insightface/detection/scrfd/mmdet/models/detectors/rpn.py
imports: import mmcv
  from mmcv.image import tensor2imgs
  from mmdet.core import bbox_mapping
  from ..builder import DETECTORS, build_backbone, build_head, build_neck
  from .base import BaseDetector
label_desc: Use image node_id 4 for calling the RPN obj's underlying member method code with example usage: obj.forward_dummy(img) and returns: rpn_outs