Image interpolation with a sample image

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MX Zhang
MX Zhang on 28 Jul 2017
Commented: Image Analyst on 28 May 2020
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");

Answers (2)

Image Analyst
Image Analyst on 28 Jul 2017
Try using imresize() instead of interp2().
  2 Comments

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Vipresh Gangwal
Vipresh Gangwal on 28 Jul 2017
Edited: Vipresh Gangwal on 28 Jul 2017
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 Comments
Image Analyst
Image Analyst on 31 Jul 2017
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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