How can i use interp1 to enlarge the photo 'lena'
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I have a image which is lena_half, 256*256*3, how can I use interp1 to enlarge it?
What I have done so far, but not working: %%
lena = double(imread('lena.tif'));
figure(6);
imshow(lena)
y_LenaHalf = double(imread('lena_half.tif'));
figure(7);
imshow(y_LenaHalf)
x2 = 1:256;
xi_2 = 1:(255/511):256;
yi_2 = interp1(x2, y_LenaHalf, xi_2);
yi2_2 = interp1(x2, yi_2.', xi_2).';
yii_2 = interp1(yi2_2, yi2.', xi_2);
figure(8);
imshow(uint8(yii_2))
SE2 = (lena - yii_2).^2;
MSE2 = mean(mean(SE2));
Also, there is an error: Error using .' Transpose on ND array is not defined. Use PERMUTE instead.
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Accepted Answer
KSSV
on 24 May 2018
Check this link for the same question: https://in.mathworks.com/matlabcentral/answers/399622-resizing-images-using-interp1
5 Comments
KSSV
on 24 May 2018
I already mentioned there...it does interpolation along one dimension..you need to run another loop along column.....also...
Image Analyst
on 24 May 2018
Why? What are you not simply using imresize()? Why do it the hard way? Is it your homework that's forcing you to do it the least convenient way?
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