title: Is there any Difference of Gaussians function in Matlab?
body: <p>I am new to Image Processing, and in my experiment I am having difficulty with Difference of Gaussians. Various implementation were given to me but I don't understand them and their parameters. </p>
  
  <p><a href="http://postimg.org/image/hkblwjwep/" rel="nofollow noreferrer">Here are my formulas</a></p>
  
  <p><img src="https://i.stack.imgur.com/Luqbd.jpg" alt="enter image description here"></p>
  
  <p>Should I implement this filtering myself, or is there an existing function defined for this? Of course with all parameters which are like in link. I will need to play with parameters and produce different images.</p>