title: OpenCV (gamma) in addWeighted function
body: <p>In OpenCV (c++) addWeighted function</p>
  
  <pre><code>void addWeighted(InputArray src1, double alpha, InputArray src2, double beta, double gamma, OutputArray dst, int dtype=-1)
  </code></pre>
  
  <p>gamma is the scalar added to each sum.</p>
  
  <p>How do we make it 'wrap around' for large values of gamma?</p>
  
  <p>When I give gamma as 255, I just get a white screen</p>