how to increase the resolution of an image?

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Hamza
Hamza 2013-10-20
评论： Walter Roberson 2020-6-15
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

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Image Analyst
Image Analyst 2013-10-20
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.
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oza san
oza san 2017-3-29
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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更多回答（2 个）

Hasan Nawaz
Hasan Nawaz 2019-6-12
How can I change resolution of satellite images r satellite data(enviromental data)?
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Image Analyst
Image Analyst 2019-6-12
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 2020-6-12
I want to extract nanoparticles from the image and want to increase the resolution and clarity of the image
  2 个评论
Image Analyst
Image Analyst 2020-6-12
How is this announcement an "Answer" to Hamza's question?
Walter Roberson
Walter Roberson 2020-6-15
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
https://www.mathworks.com/help/vision/ug/sharpen-an-image.html

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