[jira] [Created] (PDFBOX-5140) Can't change PDF including some Chinese font to JPG correctly

["Shigeru Okada (Jira)" <ji...@apache.org>]

Shigeru Okada created PDFBOX-5140:
-------------------------------------

             Summary: Can't change PDF including some Chinese font to JPG correctly
                 Key: PDFBOX-5140
                 URL: https://issues.apache.org/jira/browse/PDFBOX-5140
             Project: PDFBox
          Issue Type: Bug
          Components: Rendering
    Affects Versions: 2.0.22
         Environment: Windows 10

            Reporter: Shigeru Okada
         Attachments: TC_DFKaiShuSB.pdf, TC_DFKaiShuSB_001.jpg, TC_MingLiu.pdf, TC_MingLiu_001.jpg, TC_PMingLiU.pdf, TC_PMingLiU_001.jpg

I tried to change PDF file including Chinese font to JPG file.
Source code is as below.

	private List<String> convertPdf2Jpg(File pdfFile) throws TextImageExtractorException{

		List<String> jpgList = new ArrayList<String>();

		try {
			PDDocument document = PDDocument.load(pdfFile);
			PDFRenderer pdfRenderer = new PDFRenderer(document);
			for (int i = 0; i < document.getNumberOfPages(); i++) {
				BufferedImage image = null;
				try{
					image = pdfRenderer.renderImageWithDPI(i, 300 ,ImageType.RGB);
					String jpgName = pdfFile.getPath().split(".pdf")[0] + "_" + String.format("%03d", i+1) +  ".jpg";
					ImageIOUtil.writeImage(image, jpgName, 300);
					jpgList.add(jpgName);
				}
				catch(Exception e) {
					document.close();
					LOG.error(pdfFile + "(" + i + " page) " + " can't convert pdf to jpg file (convertPdf2Jpg())." + e.toString());
					throwPdfBoxException("convertPdf2Jpg():" +  pdfFile + "(" + i + " page) " + " can't convert pdf to jpg file." + e.toString());
				}
			}
			document.close();
		}
		catch(Exception e){
			LOG.error(pdfFile + "Can't load PDF file (convertPdf2Jpg()).");
		}
		return jpgList;
	}

I attached example of PDF and JPG. Chinese characters are broken.
It seems that it depends on font. 
If you need more information, please let me know.

Thanks

//Okada




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