title: Why OpenCV Using BGR Colour Space Instead of RGB
body: <p>Why <code>OpenCV</code> using <code>BGR</code> colour space instead of <code>RGB</code>. We all know that <code>RGB</code> is the convenient colour model for most of the computer graphics and also the human visual system works in a way that is similar to a <code>RGB</code> colour space. Is there any reason behind <code>OpenCV</code> <code>BGR</code> colour space?.</p>