docstr: Takes points in NDC coordinates and project them to the pixel 2d coordinates
  x_pixel = (1 + x_ndc) / 2.0 * image_width
  y_pixel = (1 - y_ndc) / 2.0 * image_height
code: def ndc_2_pixel(self, points_ndc):
      """
      Takes points in NDC coordinates and project them to the pixel 2d coordinates
      x_pixel = (1 + x_ndc) / 2.0 * image_width
      y_pixel = (1 - y_ndc) / 2.0 * image_height
      """
  
      points_pixel = ((points_ndc[:, :2] * np.array([1, -1])) + 1) / 2
      points_pixel *= self.image_size
      return points_pixel
  
file_path: norfair/demos/3d_track/src/utils.py
imports: import cv2
  import numpy
  from norfair import Palette
label_desc: Use image node_id 6 for calling the PixelCoordinatesProjecter obj's underlying member method code with example usage: obj.ndc_2_pixel(points_ndc) and returns: points_pixel