function?attack（W_image）
W_i1?=?imread（W_image）;
[MN]?=?size（W_i1）;
imwrite（W_i1‘5jpegattack.jpg‘‘jpeg‘‘Quality‘45）;
J=imread（‘5jpegattack.jpg‘‘jpeg‘）;
%jpeg壓縮攻擊
J1=imnoise（W_i1‘salt?&?pepper‘0.01）;
%椒鹽噪聲攻擊
J2（1:2601:260）?=?W_i1（1:2601:260）;
J2（261:380261:380）?=?zeros（120120）;
J2（381:M381:N）?=?W_i1（381:M381:N）;
%剪切
J3=medfilt2（W_i1[33]）;
%中值濾波
J4=imnoise（W_i1‘gaussian‘00.01）;
%高斯噪聲
imwrite（uint8（J1）‘2salt.bmp‘）;

imwrite（uint8（J2）‘1cut.bmp‘）;

imwrite（uint8（J3）‘3middle.bmp‘）;

imwrite（uint8（J4）‘4gaosi.bmp‘）;

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

?????文件?????263222??2014-12-04?00:55??DWT\1cut.bmp

?????文件?????263222??2014-12-04?00:55??DWT\2salt.bmp

?????文件?????263222??2014-12-04?00:55??DWT\3middle.bmp

?????文件?????263222??2014-12-04?00:55??DWT\4gaosi.bmp

?????文件??????19150??2014-12-04?00:55??DWT\5jpegattack.jpg

?????文件????????578??2014-12-04?00:48??DWT\attack.m

?????文件????????562??2014-12-04?00:47??DWT\embeded.m

?????文件?????263222??2014-12-03?20:20??DWT\lenna.bmp

?????文件????????701??2014-12-03?22:04??DWT\Pick.m

?????文件????????542??2014-12-03?20:23??DWT\shuiyin.bmp

?????文件?????263222??2014-12-04?00:55??DWT\watermark.bmp

?????目錄??????????0??2015-01-24?15:27??DWT

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

??????????????1600865????????????????????12