title: Vertical histogram & horizontal histogram in aforge
body: <p>How can I get the vertical histogram or the horizontal histogram of text image for segmentation the text into line and connected words? 
  I used aforge with:</p>
  
  <pre><code>HorizontalIntensityStatistics his = new HorizontalIntensityStatistics(pic);            
  Histogram histogram = his.Gray;
  </code></pre>
  
  <p>But it didn't work, I can't see the histogram.</p>