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https://issues.apache.org/jira/browse/PDFBOX-3763?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15976985#comment-15976985
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Tilman Hausherr commented on PDFBOX-3763:
-----------------------------------------
Time for rendering p182 is about 30% lower now.
> Optimize SampledImageReader.getStencilImage()
> ---------------------------------------------
>
> Key: PDFBOX-3763
> URL: https://issues.apache.org/jira/browse/PDFBOX-3763
> Project: PDFBox
> Issue Type: Bug
> Components: Rendering
> Affects Versions: 2.0.5
> Reporter: Tilman Hausherr
> Assignee: Tilman Hausherr
> Labels: optimization
> Fix For: 2.0.6, 3.0.0
>
>
> I have a PDF file (which I can't share, it is p182 of the one from
> https://stackoverflow.com/questions/43248021/pdfbox-2-unusual-memory-consumption
> ) that needs over 3GB for rendering due to two stencil images that are 18694
> x 13214. PDFBox converts stencil images to RGB images, where 1 pixel needs 4
> bytes, so such an image uses 1GB.
> After many dead ends over the easter weekend, I realized today that the
> BufferedImage isn't needed at all - we can process the bits directly.
> Memory footprint is down from 3.6GB to 2.2GB and it is faster too.
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