code: def linestrings_to_lanes(lines):
      lanes = []
      for line in lines:
          lanes.append(line.coords)
  
      return lanes
  
file_path: PaddleDetection/ppdet/data/culane_utils.py
imports: import math
  import numpy
  from imgaug.augmentables.lines import LineString
  from scipy.interpolate import InterpolatedUnivariateSpline
label_desc: Use image node_id 2 for calling a global function with example usage: linestrings_to_lanes(lines) and returns: lanes