[jira] [Created] (PDFBOX-5097) Rendered pdf image lacks all the text in this particular case

["Robert-Andrei Damian (Jira)" <ji...@apache.org>]

Robert-Andrei Damian created PDFBOX-5097:
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             Summary: Rendered pdf image lacks all the text in this particular case
                 Key: PDFBOX-5097
                 URL: https://issues.apache.org/jira/browse/PDFBOX-5097
             Project: PDFBox
          Issue Type: Bug
          Components: Rendering
    Affects Versions: 2.0.22
         Environment: Linux DamianPad 5.4.0-65-generic #73-Ubuntu SMP Mon Jan 18 17:25:17 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
            Reporter: Robert-Andrei Damian
         Attachments: 0.png, 1.png, document(3).pdf

Hello,

I am working with pdfbox to transform input pdf files to images, which are later fed to an OCR library. It works perfectly in most of the cases but I stumbled upon this particular case in which all text disappeared from the rendered image.

My source code for the method which converts the pdf into images:

 
{code:java}
public List<BufferedImage> splitPdf(File pdfFile) throws IOException {
    List<BufferedImage> result = new ArrayList<>();

    PDDocument document = PDDocument.load(pdfFile);
    PDFRenderer pdfRenderer = new PDFRenderer(document);
    for (int pageIndex = 0; pageIndex < document.getNumberOfPages(); pageIndex++) {
        result.add(pdfRenderer.renderImage(pageIndex));
        debugPageImageInfo(result.get(result.size() - 1));
    }
    document.close();

    return result;
}
{code}
 

I attached to this issue the pdf file for which I identified the problem and the resulting images.

 

I hope this is helpful for anyone else encountering the same problem!

 



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