Comments on: Help! My publisher wants a 300 dpi TIFF

By: AC

AC — Wed, 09 Nov 2011 10:44:27 +0000

Hi all,
I have been struggling myself with this problem. Thanks for all the tips!
I just wanted to add: if you prefer to do it manually (as opposed to command line), once you plot a figure in MATLAB, you may simply click ‘File>Export Setup’. Then you can choose the Resolution and the size at the same time.
I thought this was convenient and simple enough to be mentioned here.

Wow, submission just became less time-consuming :)

By: Steve

Steve — Tue, 23 Aug 2011 21:58:42 +0000

Peter—Thanks!

By: Peter

Peter — Tue, 23 Aug 2011 20:57:44 +0000

This code works for me. Get export_fig from:
http://www.mathworks.com/matlabcentral/fileexchange/23629-exportfig

figure('InvertHardcopy','off','Color',[1 1 1]); % Force the background to be white
plot(x, y);
export_fig([filepath filename 'full'], '-tif', '-cmyk', '-r300'); % For CMYK 300 DPI tiff images

By: Steve

Steve — Wed, 06 Jan 2010 15:01:24 +0000

Kumaran—GeoTIFF referencing information is stored in a TIFF image using private tags, not using the XResolution and YResolution tags. I don’t know exactly how to do what you are asking. However, since you say the referencing info doesn’t change, you might be able to use the Tiff class (a R2009b) feature to copy the GeoTIFF tag info into your output TIFF file.

By: Kumaran

Kumaran — Mon, 04 Jan 2010 06:06:35 +0000

Hi, I am importing a geotiff image using imread. I have the .tfw file which gives me the reference info.
I then perform some processing on the image and then which to wish to export the image as a geotiff.
The problem I am facing is that I am not sure what to put into the resolution parameters.
The reference data is the same, so I can reuse the tfw file and rename it accordingly.
What do I do with the the XResolution and YResolution parameters. I thought they should be the pixels per degree, but I cannot change the ResolutionUnit.

Can you provide any help on how to create a geotiff image with the proper referencing and resolution?

By: Steve

Steve — Wed, 04 Nov 2009 15:28:14 +0000

Sonja—My imwritesize submission on the MATLAB Central File Exchange might be helpful. It was posted there earlier today.

By: Sonja

Sonja — Wed, 04 Nov 2009 05:48:50 +0000

My publisher is wanting images for a new book to be 300 dpi. Only 5 of the 19 images are 300, the rest are either 96 or 150. HOW DO I ENLARGE THE DPI?

I’m on a hard deadline, so any respose would be helpful!!!

By: Steve

Steve — Wed, 09 Sep 2009 17:45:43 +0000

Jan—When you say “It won’t let me change the pixels,” what does “It” refer to?

This blog is about image processing and MATLAB, and the post you commented on talks about how to do the task using MATLAB.

If you don’t have MATLAB and want to use something else, then you should look for an image editing package. There are many such packages, some free and some commercial.

By: Jan

Jan — Thu, 03 Sep 2009 22:13:55 +0000

I have a .tiff file that is 200 dpi and the publisher needs it to be 300 dpi. It is 1700 x 2200 pixels and I believe 8.5 x 11 inches, but I’m not sure. It won’t let me change the pixels. How do I change it or what software can I use so that it will work for me?

By: May

May — Mon, 13 Jul 2009 13:49:20 +0000

Thanks Steve. My understanding got better! :)