class_docstr: This class used to compute and print the current FPS while evaling.
code: def __init__(self):
      self.total_time = 0.0
      self.calls = 0
      self.start_time = 0.0
      self.diff = 0.0
      self.average_time = 0.0
      self.duration = 0.0
  
imports: import os
  import cv2
  import time
  import numpy
  from .visualization import plot_tracking_dict, plot_tracking
label_desc: Use image node_id 1 to create a new MOTTimer object from inherited base classes: object with example: obj = MOTTimer()