MATLAB - write image into an eps file

eps, image, imagemagick, matlab

Solution

One possible solution is to plot your image using IMSHOW, then print the entire figure as a .eps using PRINT:

img = imread('peppers.png');         %# A sample image
imshow(img,'Border','tight',...      %# Display in a figure window without
       'InitialMagnification',100);  %#    a border at full magnification
print('new_image.eps','-deps');      %# Print the figure as a B&W eps

One drawback to this solution is that if the image is too big to fit on the screen, IMSHOW will shrink it to fit, which will reduce the on-screen resolution of the image. However, you can adjust the final resolution of the saved image using the `-r<number>` option for the PRINT function. For example, you can print your figure as an Encapsulated Level 2 Color PostScript with a resolution of 300 dpi by doing the following:

print('new_image.eps','-depsc2','-r300');

EDIT: If you are unable to use IMSHOW (either because you don't have the Image Processing Toolbox or because you are using a MATLAB mode that doesn't allow it), here is an alternative way to create and print the figure:

img = imread('peppers.png');      %# A sample image
imagesc(img);                     %# Plot the image
set(gca,'Units','normalized',...  %# Set some axes properties
        'Position',[0 0 1 1],...
        'Visible','off');
set(gcf,'Units','pixels',...      %# Set some figure properties
        'Position',[100 100 size(img,2) size(img,1)]);
print(gcf,'new_image.eps','-depsc2','-r300');  %# Print the figure

You can also take a look at this documentation to see how printing works without a display.

Problem

In MATLAB, how do you write a matrix into an image of EPS format? It seems `imwrite` does not support EPS. Convert is not working on the Linux server I am using: ``` $ convert exploss_stumps.jpg exploss_stumps.eps convert: missing an image filename `exploss_stumps.eps' @ convert.c/ConvertImageCommand/2838 ``` Why? I tried gnovice's idea under terminal mode: ``` figH = figure('visible','off') ; imshow(img,'border','tight',... %# Display in a figure window without 'InitialMagnification',100); %# a border at full magnification print(strcat(filepath,'/', dataset,'_feature_',num2str(j), '.eps'),'-depsc2'); close(figH) ; ``` However I got: ??? Error using ==> imshow at 191 IMSHOW requires Java to run. Error in ==> study_weaker at 122 imshow(img,'border','tight',... %# Display in a figure window without 191 error(eid,'%s requires Java to run.',upper(mfilename)); How can I fix it?

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