I=imread('rice.tif');
imshow(I);
I1=imresize(I,1.5,'nearest neighber');  %最近鄰插值
figure,imshow(I1);
I2=imresize(I,1.5,'bilibear'); %雙線形插值
figure,imshow(I2);
I3=imresize(I,1.5,'bicubic'); %雙三次插值
figure,imshow(I3);