title: HSV colour space and CvInRangeS function
body: <pre><code>cvInRangeS(imgHSV, cvScalar(15, 234, 120), cvScalar(21, 234, 120), imgThreshed);
  </code></pre>
  
  <p>I am wondering what each parameter in the cvScalar function represents. I thought it  would be HSV but it doesnt seem to be thresholding the desired color. Could someone explain the parameters a bit clearer?</p>