title: Compare histograms and display the result in matlab
body: <p>I’m trying to define three categories of ultrasound images:
  Dense breast, fat breast, and undefined.</p>
  
  <p>For this propose i´m using the histogram of gray level of each image:</p>
  
  <ul>
  <li>if the distribution of the histogram is close to the axis yy it´s a breast with dense tissue</li>
  <li>if the distribution of gray level it´s in the right side  means that we have a fatty breast.</li>
  <li>If the level of gray is homogeneously distributed means that we are facing an undefined case, it´s not dense and it´s not fatty.</li>
  </ul>
  
  <p>My problem is how can I use the information of the histogram, how can I compare the histograms automatically with MATLAB, and say if it´s dense or fatty???</p>
  
  <p>Any ideas ???
  Thanks in advance.</p>