How to increase image size while keeping image sharp?

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Kevin
Kevin 2021-5-11
评论： Kevin 2021-5-11
Hi everyone,
This is a pretty general question. I took a screenshot of the MATLAB toolstrip (actually part of it).
It looks great except I want it bigger. So I use imresize( ),
B = imresize(A, 4);
but it looks pixelated.
Is there a better way to do this?

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回答（1 个）

Image Analyst
Image Analyst 2021-5-11
You need to use the nearest option:
B = imresize(A, 4, 'nearest');
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Image Analyst
Image Analyst 2021-5-11
Yes, it can be, which is good for me because that's my whole career and it's good if people think it's hard because they are impressed with my work.
Post your original image if you want.
Kevin
Kevin 2021-5-11
Here is the mat-file that has the original image.
Actually I have also tried using IrfanView and this is what I did:
load tmp.mat
imshow(A)
% Select "Save As" and save the image as PNG file
Open the image in IrfanView and press + a few times to enlarge the image. The result is better than what I get in MATLAB. So there is a solution. What magic in IrfanView?

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