title: AttributeError: 'module' object has no attribute 'imread'
body: <p>I'm getting a error when trying to run a simple python opencv program on my mac.</p>
  
  <pre><code>   import cv
     import numpy as np
     from matplotlib import pyplot as plt
  
     img =cv.imread('road.jpg',0)
     plt.imshow(img, cmap='gray', interpolation='bicubic')
     plt.xticks([]), plt.yticks([])  # to hide tick values on X and Y axis
     plt.show()
  </code></pre>
  
  <p><strong>Output:</strong></p>
  
  <pre><code>Traceback (most recent call last):
  File "/Users/mohitpandrangi/Documents/hello.py", line 5, in &lt;module&gt;
  img =cv.imread('road.jpg',0)
  AttributeError: 'module' object has no attribute 'imread'
  </code></pre>