code: def get_target_width_height(input_tensor):
      width, height = input_tensor.size(-1), input_tensor.size(-2)
      return width, height
  
imports: import cv2
  import numpy
label_desc: Use image node_id 5 for calling the GradCAM obj's underlying member method code with example usage: obj.get_target_width_height(input_tensor) and returns: width,  height