clear
u1=zeros(3,1);
u2=zeros(3,1);
v11=zeros(3,1); %高分辨率RGB值
v12=zeros(3,1); %低分辨率RGB值
AA=zeros(3,3);
BB=zeros(3,3);
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
AA=[1/sqrt(3),1/sqrt(3),1/sqrt(3);
1/sqrt(6),1/sqrt(6),-2/sqrt(6); %RGB－>IHS正变换矩阵
1/sqrt(2),-1/sqrt(2),0];
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
BB=[1/sqrt(3),1/sqrt(6),1/sqrt(2);
1/sqrt(3),1/sqrt(6),-1/sqrt(2); %IHS->RGB逆变换矩阵
1/sqrt(3),-2/sqrt(6),0];
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
RGB_up=imread('high.jpg'); %读图像
RGB_low=imread('low.jpg');
figure(1)
imshow(RGB_up);
title('高分辨率图像');
figure(2)
imshow(RGB_low);
title('多光谱低分辨率图像');
[M,N,color]=size(RGB_up);
R_up=RGB_up(:,:,1);
G_up=RGB_up(:,:,2);
B_up=RGB_up(:,:,3);
[hang,lie,color]=size(RGB_up);
for i=1:hang
for j=1:lie
v11(1)=double(RGB_up(i,j,1)); %把函数类型unit8为double型
v11(2)=double(RGB_up(i,j,2));
v11(3)=double(RGB_up(i,j,3));
v12(1)=double(RGB_low(i,j,1)); %把函数类型unit8为double型
v12(2)=double(RGB_low(i,j,2));
v12(3)=double(RGB_low(i,j,3));
u1=AA*v11; %正变换
u2=AA*v12;
u2(1)=u1(1); %交换空间明度
v12=BB*u2;
RGB(i,j,1)=v12(1); %逆变换
RGB(i,j,2)=v12(2);
RGB(i,j,3)=v12(3);
end
end
%subplot(2,3,5);
r=RGB(:,:,1);
g=RGB(:,:,2);
b=RGB(:,:,3);
RGB=uint8(round(RGB));
figure(3)
imshow(RGB);
title('融合后的图像');
