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https://issues.apache.org/jira/browse/PDFBOX-993?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jesse Eichar updated PDFBOX-993:
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Attachment: out.png
PNG with two overlapping images. The top one has 50% transparency
> Image transparency lost when drawing an image (during pdf to image conversion)
> ------------------------------------------------------------------------------
>
> Key: PDFBOX-993
> URL: https://issues.apache.org/jira/browse/PDFBOX-993
> Project: PDFBox
> Issue Type: Bug
> Affects Versions: 1.5.0
> Reporter: Jesse Eichar
> Priority: Minor
> Labels: image, transparent
> Attachments: drawImageTransparency.patch, out.png
>
>
> My scenario is converting an existing PDF to an image. When the PDF contains
> an image with transparency the transparency is lost and the image is drawn at
> 100% opacity.
> This fix is related (and depends on) the issue:
> https://issues.apache.org/jira/browse/PDFBOX-975
> All that is needed is to set the composite of the graphics before drawing the
> image as specified in the graphics state (See attached patch)
> Note: line number in patch maybe off since it was created from 1.5.0 but
> after fixing 975.
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