standard Otsu's method

I am not able to write the code for Standard Otsu's method. Can anyone provide the code.

[Ahmed Elazab]

Standard Otsu thresholding method is already built in in Matlab image processing toolbox using graythresh function. You can check its documentation as well. Here is an example of how to use:

if true
 im=imread('cameraman.tif');
 thresh= graythresh(im);
 BW_im= im2bw(im,thresh);
 imshow(BW_im)
end