code: def __init__(self):
      self.axis = 1
      super(NMEMetric, self).__init__(
          "NME", axis=self.axis, output_names=None, label_names=None
      )
      # self.losses = []
      self.count = 0
  
file_path: insightface/alignment/heatmap/metric.py
imports: import mxnet
  import numpy
  import math
  import cv2
  from config import config
label_desc: Use image node_id 1 to create a new NMEMetric object from inherited base classes: mx.metric with example: obj = NMEMetric()