code: def _count_outlying_pixels(sample1, sample2):
      eq = sample1 != sample2
      return np.count_nonzero(np.sum(eq, axis=2))
  
imports: import cv2
  import numpy
  import nvidia.dali
  import nvidia.dali.fn
  import os.path
  import unittest
  import time
  from nose2.tools import params
  from nvidia.dali.pipeline.experimental import pipeline_def
  from nvidia.dali.types import DALIInterpType
label_desc: Use image node_id 7 for calling the RemapTest obj's underlying member method code with example usage: obj._count_outlying_pixels(sample1, sample2) and returns: np