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Extract a figure from a pdf file

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MINATI PATRA
MINATI PATRA 2024-4-19
评论： DGM 2024-5-2
pdfFile = "example.pdf" % String
function extractImagePDF(pdfFile)
import java.io.*
import javax.imageio.ImageIO.*
import org.apache.pdfbox.*
filename = fullfile(pwd,pdfFile);
jFile = File(filename);
document = pdmodel.PDDocument.load(jFile);
catalog = document.getDocumentCatalog();
pages = catalog.getPages();
iter = pages.iterator();
% look for image objects on each page of the PDF
while (iter.hasNext())
page = iter.next();
resources = page.getResources();
pageImages = resources.getXObjectNames;
if ~isempty(pageImages)
imageIter = pageImages.iterator();
i = 1;
% extract each image object from page and write to destination folder
while (imageIter.hasNext())
key = imageIter.next();
if (resources.isImageXObject(key))
xObject = resources.getXObject(key);
img = xObject.getImage();
outputfile = File("Img_"+i +".jpg");
write(img, "jpg", outputfile);
end
i = i+1;
end
end
end
document.close();
end
%% I want to extract Figure 1 (Fig. 1. Geometrical representation of the model), Page 5 from the attached pdf
%% The code I got from this forum but unable to adjust
  2 个评论
DGM
DGM 2024-5-2
I don't know why the java tools can't find it, but here it is. I just used Inkscape to get the object.

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