title: OpenCV Error: (-215:Assertion failed) VScn::contains(scn) && VDcn::contains(dcn) && VDepth::contains(depth) in function 'CvtHelper'
body: <pre><code>Traceback (most recent call last):
  File "demo.py", line 132, in 
       `result = find_strawberry(image)`
  File "demo.py", line 63, in find_strawberry
  `image = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)`
  cv2.error: OpenCV(3.4.2) /Users/travis/build/skvark/opencv-python/opencv/modules/imgproc/src/color.hpp:253: error: (-215:Assertion failed) VScn::contains(scn) &amp;&amp; VDcn::contains(dcn) &amp;&amp; VDepth::contains(depth) in function 'CvtHelper'
  </code></pre>
  
  <p>I personally have spent a lot of time on this question, hence thought relevant to post it on Stackoverflow.</p>
  
  <p>Question taken from: <a href="https://github.com/llSourcell/Object_Detection_demo_LIVE/issues/6#issue-353775712" rel="noreferrer">llSourcell/Object_Detection_demo_LIVE</a></p>