class_docstr: The post process for PSE.
code: def boxes_from_bitmap(self, score, kernels, shape):
      label = pse(kernels, self.min_area)
      return self.generate_box(score, label, shape)
  
file_path: PaddleOCR/ppocr/postprocess/pse_postprocess/pse_postprocess.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import numpy
  import cv2
  import paddle
  from paddle.nn import functional
  from ppocr.postprocess.pse_postprocess.pse import pse
label_desc: Use image node_id 3 for calling the PSEPostProcess obj's underlying member method code with example usage: obj.boxes_from_bitmap(score, kernels, shape) and returns: self