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https://issues.apache.org/jira/browse/PDFBOX-4530?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tilman Hausherr closed PDFBOX-4530.
-----------------------------------
Resolution: Not A Bug
> PDFRenderer adding horizental white lines to exported image
> -----------------------------------------------------------
>
> Key: PDFBOX-4530
> URL: https://issues.apache.org/jira/browse/PDFBOX-4530
> Project: PDFBox
> Issue Type: Bug
> Components: Rendering
> Affects Versions: 2.0.15
> Reporter: amiladi
> Priority: Major
> Attachments: PdfBoxTestCase.zip, page-3-1.jpeg, page-3.pdf,
> page-7-1.jpeg, page-7.pdf
>
>
> Hello,
> I started using pdfbox recently to extract a datamatrix code from a pdf file.
> The image extraction works pretty fine.
> We found out that the source of the pdfs is not attaching them neither as
> embedded objects or inline image, the datamatrix is coded in the pdf as black
> squares.
> Then, the idea was to convert the pdf to an image and parse the code.
> Only problem, the conversion sometimes add white lines inside the datamatrix
> which makes the it unparsable (see attachements page-3-1.jpeg and page-3.pdf)
> For some other cases, the datamatrix squares differ in size in the exported
> image while they are the same in the original pdf file (see attachements
> page-7.jpeg and page-7-1.pdf).
> The outcome is the same and the parser is not able to recognize the
> datamatrix content.
> The code I am using to convert to BufferedImage is pretty straightforward
> {code:java}
> BufferedImage bi = new
> PDFRenderer(pdDocument).renderImageWithDPI(i, 600, ImageType.BINARY);
> {code}
>
>
> Is it the way I am using the renderer which causing this problem or simply a
> bug in the software!
>
> I am attaching the test project reproducing the behavior.
>
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