基于svm的嵌入与提取

% designed by superdont% blog.csdn.net/superdontclc;clear all;o=imread('E:/工作/科研/奇异值/image/lena.bmp');od=double(o);w=imread('E:/工作/科研/奇异值/image/w.bmp');%对分好的块进行svd变换[u1 d1 v1]=svd(od);d12=d1+10*w;[u2 d2 v2]=svd(d12);ow=u1*d2*v1';ow=uint8(ow);figure,imshow(ow);imwrite(ow,'E:/工作/科研/奇异值/image/lenawatermarked.bmp','bmp');owr=imread('E:/工作/科研/奇异值/image/lenawatermarked.bmp');owr=double(owr);[tu1 td1 tv1]=svd(owr);td12=u2*td1*v2';tw=td12-d1for i=1:512 for j=1:512 if tw(i,j)>5 tw(i,j)=1; else tw(i,j)=0; end endend% tw=uint8(tw) figure,imshow(tw,[]);