class_docstr: SF3D Detector.
      
class_docstr_tok: ["SF3D","Detector","."]
code: def _filter_bboxes(self, bboxlist):
      if len(bboxlist) > 0:
          keep = nms(bboxlist, 0.3)
          bboxlist = bboxlist[keep, :]
          bboxlist = [
              x for x in bboxlist if x[-1] > self.fiter_threshold
          ]
  
      return bboxlist
  
file_path: face-alignment/face_alignment/detection/sfd/sfd_detector.py
imports: import torch
  from torch.utils.model_zoo import load_url
  from ..core import FaceDetector
  from .net_s3fd import s3fd
  from .bbox import nms
  from .detect import detect, batch_detect
label_desc: Use image node_id 2 for calling the SFDDetector obj's underlying member method code with example usage: obj._filter_bboxes(bboxlist) and returns: bboxlist