title: differentiation of textures in the pictures
body: <p>I would like to perform an algorithm, that would separate brown homogeneous from no homogeneous regions.</p>
  
  <p>Which algorithm would be suitable for that task.</p>
  
  <p>How picture look like:</p>
  
  <p><img src="https://i.stack.imgur.com/lvnkD.jpg" alt="enter image description here"></p>
  
  <p>I am currently working in Octave.</p>
  
  <p>Many thanks! </p>