MATLAB - 将图像写入eps文件 [英] MATLAB - write image into an eps file

问题描述

在MATLAB中，如何在 EPS 格式的图像中编写矩阵？

In MATLAB, how do you write a matrix into an image of EPS format?

似乎 imwrite 不支持EPS。

转换在我正在使用的Linux服务器上不起作用：

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

为什么？

我在终端模式下尝试了gnovice的想法：

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) ;

但是我得到了：

???使用==> imshow时出错191在
IMSHOW需要运行Java。



错误==> study_weaker at 122

imshow（img，'border'，'tight'，...％＃Display在数字窗口中没有b $ b $
191错误（eid，'％s需要Java运行。'，upper（mfilename））;

??? 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));

我该如何解决？

推荐答案

一种可能的解决方案是使用 IMSHOW 绘制图像。 ，然后使用 PRINT将整个图形打印为.eps ：

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

此解决方案的一个缺点是，如果图像太大，无法放在屏幕上， IMSHOW 将缩小它以适应，这将降低图像的屏幕分辨率。但是，您可以使用 -r< number> PRINT功能的选项。例如，您可以通过执行以下操作将图形打印为分辨率为2 dpi的Encapsulated Level 2 Color PostScript：

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');

编辑：如果您无法使用 IMSHOW （要么是因为你没有图像处理工具箱或因为您使用的是不允许它的MATLAB模式，这是创建和打印图形的另一种方法：

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

您还可以查看本文档，了解如何在没有显示的情况下进行打印。

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

这篇关于MATLAB - 将图像写入eps文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！