code: def cos(p1, p2):
      return (p1 * p2).sum() / (norm2(p1) * norm2(p2))
  
file_path: PaddleOCR/ppocr/utils/e2e_utils/visual.py
imports: import numpy
  import cv2
  import time
label_desc: Use image node_id 8 for calling a global function with example usage: cos(p1, p2) and returns: unknown