title: Python: Perform Grey Image to RGB
body: <p>I have a grey image and I want to convert it into RGB. How will I do it in OpenCV?</p>
  
  <pre><code>image = cv2.imread("image.jpg", cv2.IMREAD_GRAYSCALE)
  cv2.imshow('Grey Scale Image', image)
  cv2.waitKey()
  
  
  backtorgb = cv2.cvtColor(image,cv2.COLOR_GRAY2RGB)
  cv2.imshow('GRAY2RGB Image', backtorgb)
  cv2.waitKey()
  </code></pre>
  
  <p>I tried GRAY2RGB, but it doesn't change the image. Where did I go wrong?</p>