how can i overcome this problem

 J = entropyfilt(I);
Out of memory. Type HELP MEMORY for your options.

Error in entropyfilt (line 89) J = J(idx{:});

[Walter Roberson]

What result did you get when, at the command line, you gave the command

help memory

[Image Analyst]

What is the size of I? What does this say

whos I
size(I)

Answer 1

[David Sanchez]

Change the size of the swap partition:

Under windows: http://windows.microsoft.com/en-us/windows/change-virtual-memory-size#1TC=windows-7

Under Linux: http://www.thegeekstuff.com/2010/08/how-to-add-swap-space/

[Walter Roberson]

Caution: if you start swapping to disk, your system will likely get very slow. Unless you don't mind waiting around 2 hours in between clicks or typing characters, it would not be at all uncommon to end up rebooting the system due to not being able to get its attention to stop running the MATLAB session that is tying up memory.