title: Image of HSV color wheel for openCV?
body: <p>I have written the code for histogram and i want to use it for SVM traning. But the fundamental problem is that i don't understand how many minimum number of bins i should choose so that i can get widely varied distribution among bins for different colors (red,green,yellow,blue,orange).</p>
  <p>So, can somebody give me the link/post the image of <strong>Hue color wheel for openCV</strong>. I need something as shown below but the hue range in it is 0-360 and i need a color wheel used by opencv (i.e. 0-180 )</p>
  <p><img src="https://i.imgur.com/PKjgfFXm.jpg" alt="image" /></p>