code: def __init__(self, estimate, obj_id, live_points):
      self.estimate = estimate
      self.id = obj_id
      self.live_points = live_points
  
file_path: norfair/demos/motmetrics4norfair/src/motmetrics4norfair_xyah.py
imports: import argparse
  import os.path
  import numpy
  from norfair import Detection, Tracker, drawing, metrics, video
  from norfair.filter import FilterPyKalmanFilterFactory
label_desc: Use image node_id 1 to create a new CartesianTrack object  with example: obj = CartesianTrack(estimate, obj_id, live_points)