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https://issues.apache.org/jira/browse/PDFBOX-2917?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14674222#comment-14674222
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Andreas Lehmkühler commented on PDFBOX-2917:
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{quote}
I'm surprised that the three methods which Tilman tried are producing different
results, especially with g.drawImage(). I think we might be looking at either
some odd behaviour in ColorConvertOp which isn't doing what I expected, or
perhaps a bug in ColorConvertOp itself (it wouldn't be the first).
{quote}
There seems to be a still unresolved issue with older OpenJDK versions
[JDK-6968788|https://bugs.openjdk.java.net/browse/JDK-6968788] and maybe it's
still true for miore recent versions and the oracle jdk as well.
> PDF to Image, faint/dim Images
> ------------------------------
>
> Key: PDFBOX-2917
> URL: https://issues.apache.org/jira/browse/PDFBOX-2917
> Project: PDFBox
> Issue Type: Bug
> Affects Versions: 2.0.0
> Environment: Windows 8.1, jdk1.8.0_51, jre1.8.0_51
> Reporter: Samuil Goranov
> Priority: Trivial
> Labels: images, newbie
> Attachments: saved0.png, selection.pdf
>
>
> {code:title=pdftoimage.java|borderStyle=solid}
> PDDocument document = null;
> File file = new File("F:\\Projects\\java\\pdfbox\\complete.pdf");
> document = PDDocument.load( file );
> try {
> // retrieve image
> BufferedImage bi = new PDFRenderer(document).renderImageWithDPI(
> 0 , 150, ImageType.RGB );
> File outputfile = new File("saved0.png");
> ImageIO.write(bi, "png", outputfile);
> } catch (IOException e) {
> }
> {code}
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