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How to export non-blurry eps images?

I'm exporting an image in Matlab using the eps format, but it smooths the image. Matlab does not blur the image using other formats such as png. I would like to know how to export a non-blurry image with eps format. Here is the resulting image using png: enter image description here

And here is the resulting image using eps: enter image description here

Solution

  • UPDATE:

    The problem is reproducible on a Mac, and the issue is with the eps renderer rather than MATLAB. For e.g., saving imagesc(rand(20)) and viewing with Preview and GSview results in the following:

    Preview screenshot

    enter image description here

    GSview screenshot

    enter image description here

    Clearly, the information is not lost. It is just not interpreted/read correctly by some EPS viewers. The solution is simple: use GSview to view your eps images. You can download it from here

    On Macs especially, if your end application is latex/pdflatex, you will have to explicitly set it to use GS/GSview, because otherwise, it will default to the Quartz engine, which is baked into the OS.

    PREVIOUS ANSWER:

    I am unable to reproduce the behavior your described. Here is the code I used, tested using R2010b on WinXP 32-bit:

    M = fspecial('gaussian',[20 20],5);
imagesc(M)
print('-dpng','a.png')
print('-depsc2','b.eps')

    a.png

    a.png

    b.eps

    b.eps

    Perhaps this is an issue with your EPS viewer...