利用图像内插法放大图像

pic=imread(‘data/2.jpg‘);
J=imresize(pic,2,‘nearest‘);
K=imresize(pic,2,‘bilinear‘);
L=imresize(pic,2,‘bicubic‘);
figure(1);
imshow(pic);
figure(2);
imshow(J);
figure(3);
imshow(K);
figure(4);
imshow(L);

pic=imread(‘data/2.jpg‘);
[x,y,z]=size(pic);

x=round(x*1.5);
y=round(y*1.5);
new_pic=zeros(x,y,z,class(pic));

for i=1:x
    for j=1:y
        for k=1:z
            a=round(i/1.5);
            b=round(j/1.5);
            new_pic(i,j,k)=pic(a,b,k);
        end
    end
end

figure;
imshow(pic);
title("Original picture");

figure;
imshow(new_pic);
title("Nearest neighbor");