Image interpolation with a sample image
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I am trying out image interpolation on Matlab, with the following sample image.
I'm not exactly sure why my code isn't working.
%Interpolation
figure
imagesc(V);
colormap gray;
axis image;
axis off;
title("Original");
grayImage = rgb2gray(V);
Vn = interp2(grayImage,3);
imagesc(Vn);
title("Modified");
回答（2 个）
Image Analyst
2017-7-28
1 个投票
Try using imresize() instead of interp2().
2 个评论
nika mong
2020-5-28
Hello, dear ser, I have problems writing code, which method can increase the resolution of a sub-pixel offset image, can you help please
Image Analyst
2020-5-28
nika, I don't know what that is. To learn MATLAB, try MATLAB Academy - free 2 hour training.
Vipresh Gangwal
2017-7-28
编辑：Vipresh Gangwal
2017-7-28
0 个投票
what do you mean it is not working? Also there seems to be a lot of salt and pepper noise in your image . That might be impacting the interpolation.
There is an example on the interp2 doc page. Try replicating same steps for your data.
https://www.mathworks.com/help/matlab/ref/interp2.html
2 个评论
MX Zhang
2017-7-31
Image Analyst
2017-7-31
cdata is a color image, which is a 3-D image. You can't use interp2() on a color image.
Any reason why you didn't like my solution?
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2020-5-28
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