How can i use interp1 to enlarge the photo 'lena'
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Dingbang Liang
am 24 Mai 2018
Kommentiert: Image Analyst
am 24 Mai 2018
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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KSSV
am 24 Mai 2018
Check this link for the same question: https://in.mathworks.com/matlabcentral/answers/399622-resizing-images-using-interp1
5 Kommentare
KSSV
am 24 Mai 2018
I already mentioned there...it does interpolation along one dimension..you need to run another loop along column.....also...
Image Analyst
am 24 Mai 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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