image processing using entropy

How can I process an image with the help of entropy?

Answer 1

[Image Analyst]

There is an entropyfilt() function in the Image Processing Toolbox.

[ali shahrokh]

then,I can improve contrast of image with "entropyfilt"?

[Image Analyst]

entropyfilt() gives you the entropy at each location. This does not necessarily increase contrast. In fact it might not look much like a contrast adjusted version of the original at all. It looks more like an edge detection image. To increase contrast of an image, you should use imadjust().