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https://issues.apache.org/jira/browse/PDFBOX-975?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jesse Eichar updated PDFBOX-975:
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Attachment: pdfbox-transparency.zip
Project demonstrating issue
> Shape transparency not respected when exporting to image
> --------------------------------------------------------
>
> Key: PDFBOX-975
> URL: https://issues.apache.org/jira/browse/PDFBOX-975
> Project: PDFBox
> Issue Type: Bug
> Reporter: Jesse Eichar
> Labels: patch, pdf, pdfbox, transparent
> Attachments: pdfbox-transparency.zip
>
>
> When a pdf file has a shape that is drawn with a transparency value the
> transparency values are not respected when exported to image.
> I have attached a small patch that fixes this issue. The patch does not
> fully satisfy the PDF transparency model, for example only Alpha composition
> is used. But it covers the most common use-case of drawing shapes with a
> transparency value for fill and stroke.
> I have also attached a maven project that demonstrates the issue. It had a
> pdf with a shape in it that is semi transparent. Running the application
> (execute the runexample.sh script) will load that pdf and export it as an
> image. During the export (the output is a file called pdfAsImage) the
> transparency is lost.
> Compare the exported image and the original pdf to see the difference. PDF
> is in src/main/resources/...
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