how to save an image in pdf format without blank space. i,e; size of pdf should be same as the size of the image

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Parveiz Lone 2020-3-10

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https://ww2.mathworks.cn/matlabcentral/answers/510063-how-to-save-an-image-in-pdf-format-without-blank-space-i-e-size-of-pdf-should-be-same-as-the-size

回答： Parveiz Lone 2021-11-25

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512pix1.pdf

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Bhaskar R 2020-3-10

在 MATLAB Online 中打开

saveas(gca, 'file.pdf'); % ??

Parveiz Lone 2020-3-11

above comment ....saveas(gca, 'file.pdf');

could not help me

a=imread('lena.jpg');

imshow(a),title('lena');

then i need to save image 'a' as pdf, but size of pdf should be same as size of image.

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Parveiz Lone 2021-11-25

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https://ww2.mathworks.cn/matlabcentral/answers/510063-how-to-save-an-image-in-pdf-format-without-blank-space-i-e-size-of-pdf-should-be-same-as-the-size#answer_840029

%% This can work good

h=figure;

subplot(111),imshow(image_name),title('image');

set(h,'papersize',[5.1 3.2]);

print(h,'image_name','-dpdf')

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Ameer Hamza 2020-3-10

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在 MATLAB Online 中打开

Although Friedrich's answer here: https://www.mathworks.com/matlabcentral/answers/12987-how-to-save-a-matlab-graphic-in-a-right-size-pdf#answer_17755 provides a clean solution, It still leave some extra white spaces.

I personally prefer to print the file to eps format. It leaves absolutely no extra space

print(gcf, 'filename', '-depsc')

And then export the eps file to pdf using epstopdf (command-line tool available with the installation of latex). If you don't have epstopdf installed, you can use this link: https://www.zamzar.com/convert/eps-to-pdf/ to convert the files to pdf.

The following image shows the difference between both methods. First is according to Friedrich's answer, second, when it is created using the above method.

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Image Processing and Computer Vision Image Processing Toolbox Import, Export, and Conversion

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