MATLAB: Level set based

active contourdoit4meMATLAB

my work in the area of medical imaging . Need code for global segmentation based level set method.

Check out the File Exchange. Several of them there:

I suggest you grab a book on image processing and look up morphological operations.

Opening is an erosion followed by a dilation.

Similarly closing is a dilation followed by an erosion.

A = 20; %amplitude of 10 - noise
noise = (rand(size(I))-.5)*A);
Inoisy = I+noise;