function?thresh?=?otsu（datapix_num）
%計(jì)算分割閾值

img_var?=?zeros（2561）;
for?i=1:256
????w0?=?sum（sum（data<=i-1））./pix_num;
????w1?=?1-w0;
????u0?=?sum（sum（data.*double（data<=i-1）））./（w0*pix_num）;
????u1?=?sum（sum（data.*double（data>i-1）））./（w1*pix_num）;
????img_var（i）?=?w0.*w1.*（（u0-u1）.^2）;
end

[~I]?=?max（img_var）;
thresh?=?I-1;

end

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件?????958374??2008-04-17?16:53??dip?experiment\datapicture\1.bmp

?????文件?????214326??2008-04-17?16:53??dip?experiment\datapicture\2.bmp

?????文件?????889074??2008-04-17?16:53??dip?experiment\datapicture\3.bmp

?????文件????1243280??2009-05-02?09:23??dip?experiment\datapicture\CHEN2-7.BMP

?????文件????1203344??2009-05-02?11:02??dip?experiment\datapicture\CHEN2-8.BMP

?????文件??????66616??2009-06-03?12:36??dip?experiment\datapicture\google-256.bmp

?????文件??????66614??2010-05-07?10:35??dip?experiment\datapicture\grid-fft.bmp

?????文件??????66616??2001-11-09?01:40??dip?experiment\datapicture\grid.bmp

?????文件??????66616??2006-11-05?14:04??dip?experiment\datapicture\lena.bmp

?????文件??????66616??2009-03-28?17:47??dip?experiment\datapicture\rect-45度.bmp

?????文件??????66616??2009-03-28?17:46??dip?experiment\datapicture\rect.bmp

?????文件??????74520??2009-06-03?12:37??dip?experiment\datapicture\參考圖.bmp

?????文件??????17464??2009-06-03?12:37??dip?experiment\datapicture\基準(zhǔn)圖.bmp

?????文件?????940856??2007-05-21?20:37??dip?experiment\datapicture\皮膚鏡圖像.bmp

?????文件?????940854??2009-06-11?11:40??dip?experiment\datapicture\結(jié)果.bmp

?????文件????????341??2012-05-15?22:30??dip?experiment\otsu.m

?????文件???????1940??2012-05-16?10:19??dip?experiment\task1.m

?????文件???????2450??2012-05-16?10:19??dip?experiment\task2.m

?????文件???????1353??2012-05-16?10:15??dip?experiment\task3.m

?????文件????????392??2012-05-15?09:30??dip?experiment\test.m

?????目錄??????????0??2012-05-15?17:41??dip?experiment\datapicture

?????目錄??????????0??2012-05-16?10:13??dip?experiment

-----------?---------??----------?-----??----

??????????????6888262????????????????????22