How do I save an image at a specific resolution?

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My MatLab knowledge is terrible. I have made some figures. I want to save them at a very high resolution as a .tiff. How can I do this? I have tried using the
imwrite
print -r
functions, but this doesn't seem to work.

Accepted Answer

Image Analyst
Image Analyst on 14 Dec 2013
Do you want to save only the image, as an image? Or do you want to save the figure as an image? If it's just the image, that you may have displayed with imshow(), image(), or imagesc(), then you can use imwrite().
If you want to save the figure, because you have annotation (arrows, text, lines, polygons) in the overlay above the image, or you want to show axes tick marks and toolbars, then you can use saveas(). Or better than saveas() is export_fig(). See this page to download export_fig: http://www.mathworks.com/matlabcentral/fileexchange/
  2 Comments
Joshua
Joshua on 15 Dec 2013
saveas() looks close to what I want. I create a figure with specific major and minor grid lines and a 3D image and want to save it at a high resolution for publication. I create my image, then run the code
print -r1500 % set resolution
saveas(figure(1),'test.tif') % save image as a .tiff file
Changing '-r1500' does not alter the resolution. I feel like what I am trying to do is very simple and that I am making some stupid mistake.
Joshua
Joshua on 15 Dec 2013
just got it to work with
print('-dtiff','-r500',fnames)
where -dtiff is the .tiff file type, -r500 is the resolution of 500 dpi, and fnames is the saved files name.

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More Answers (3)

Walter Roberson
Walter Roberson on 14 Dec 2013

PAVITHRA  A
PAVITHRA A on 4 Sep 2016
hi...i heed to get high resolution and low resolution of image from LBP processed image.how can I do this??can anybody help me...

Palguna Gopireddy
Palguna Gopireddy on 27 Nov 2022
See this link.
https://in.mathworks.com/help/matlab/creating_plots/save-figure-at-specific-size-and-resolution.html

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