hénon混沌序列和水印算法 图像分解和Logistics混沌序列a=imread('tu1.bmp'); ws1=size(a); %read secret image b=imread('tu2.bmp'); ws2=size(b); %read host image nb=imresize(b,ws1(1:2)); %change two images into the same size key=-0.400001; %the initial value of henon chaoti