title: Change shape, upscale, image array in Neural Net
body: <p>I have an array of image pixel values that I would like to upscale for input into my neural network. It is an array of shape (28000, 48, 48, 1). These are normalized image pixel values and would like to upscale these to a higher resolution for input into my CNN. The arrays look like this...</p>
  <pre><code>array([[[[-0.6098866 ],
           [-0.4592209 ],
           [-0.40325198],
           ...,
           [-0.7694696 ],
           [-0.90518403],
           [-0.95160526]],
  
          [[-0.66049284],
           [-0.68162924],
           [-0.694159  ],
  </code></pre>
  <p>Both my <code>X_train</code> and <code>y_train</code> image arrays have shape of (28000,48,48,1). I would like to upscale or resize these 28000 image arrays to size 75x75. Please help. Should I convert arrays back to non-normalized arrays or images and then maybe use <strong>cv2</strong> to upscale? How would I do this?</p>