class_docstr: ReitinaFace
  
  RetinaFace: Single-stage Dense Face Localisation in the Wild.
  Described in https://arxiv.org/abs/1905.00641.
  
  Args:
      cfg (`Dict`):
          Network related settings.
      phase (`str`):
          train or test.
class_docstr_tok: ["ReitinaFace","RetinaFace",":","Single-stage","Dense","Face","Localisation","in","the","Wild",".","Described","in","https",":","\/\/arxiv.org\/abs\/1905.00641",".","Args",":","cfg","(","`","Dict","`",")",":","Network","related","settings",".","phase","(","`","str","`",")",":","train","or","test","."]
code: def _make_bbox_head(self, fpn_num=3, inchannels=64, anchor_num=2):
      bboxhead = nn.ModuleList()
      for _ in range(fpn_num):
          bboxhead.append(BboxHead(inchannels, anchor_num))
      return bboxhead
  
imports: from typing import Tuple, Dict
  import numpy
  import torch
  from torch import nn
  import torch.nn.functional
  import torchvision
  from torchvision import models
  from towhee.models.retina_face.ssh import SSH
  from towhee.models.retina_face.mobilenet_v1 import MobileNetV1
  from towhee.models.retina_face.retinaface_fpn import RetinaFaceFPN
  from towhee.models.retina_face.heads import ClassHead, BboxHead, LandmarkHead
  from towhee.models.retina_face.prior_box import PriorBox
  from towhee.models.retina_face.utils import decode, decode_landm, IntermediateLayerGetter
label_desc: Use image node_id 3 for calling the RetinaFace obj's underlying member method code with example usage: obj._make_bbox_head(fpn_num, inchannels, anchor_num) and returns: bboxhead