how to increase the resolution of an image?

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Hamza
Hamza on 20 Oct 2013
Commented: Walter Roberson on 15 Jun 2020
Hi guys; I want some help, I ve an image which I want to increase its resolution 5 times, but I don't know how I can do that, if u ve any ideas, plz let me know.thanks

Accepted Answer

Image Analyst
Image Analyst on 20 Oct 2013
You can increase the number of elements by using imresize
bigImage = imresize(smallImage, 5);
Of course that does not increase the real world spatial resolution (only Hollywood can do that), so if the image is blurry, you'll still have the same blurry image, just with 5 times as many pixels.
  6 Comments
oza san
oza san on 29 Mar 2017
dear sir i want to enhance the resolution using cubic interpolation mind if you can help me. in case if you have some sample codes i will be grateful.

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More Answers (2)

Hasan Nawaz
Hasan Nawaz on 12 Jun 2019
How can I change resolution of satellite images r satellite data(enviromental data)?
  1 Comment
Image Analyst
Image Analyst on 12 Jun 2019
What do you mean by resolution? You can't change the optical resolution of the image - that's determined by the satellite. You can however change the image size in pixels with imresize(). Of course increasing the number of pixels won't get you any more optical resolution (except in Hollywood movies).

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r r
r r on 12 Jun 2020
I want to extract nanoparticles from the image and want to increase the resolution and clarity of the image
  2 Comments
Walter Roberson
Walter Roberson on 15 Jun 2020
That does not appear to be a question about MATLAB.
You need to research image enhancement algorithms.
MATLAB does not have an "increase resolution" function. It has an image resize operation, but image resizing does not increase resolution. In order to increase resolution, you need additional information beyond what is in the image itself.
For example processing satellite images to read license plates involves adding additional information about what different kinds of license plates look like, and about the fonts used for different kinds of license plates.
See also

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