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https://issues.apache.org/jira/browse/PDFBOX-2092?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tilman Hausherr updated PDFBOX-2092:
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Attachment: screenshot-profiler.png
> Very slow rendering of scanned document
> ---------------------------------------
>
> Key: PDFBOX-2092
> URL: https://issues.apache.org/jira/browse/PDFBOX-2092
> Project: PDFBox
> Issue Type: Improvement
> Components: Rendering
> Affects Versions: 2.0.0
> Environment: Win7 x64 EN
> JDK6,JDK7,JDK8
> Reporter: Juraj Lonc
> Assignee: Tilman Hausherr
> Priority: Major
> Labels: optimization
> Fix For: 2.0.9, 3.0.0 PDFBox
>
> Attachments: PDFBOX-2092.patch, SCAN_20140522_160457490_page2.pdf,
> screenshot-profiler.png
>
>
> It takes extremely long to render this file to image.
> Depends on computer but it can take 15s+ to render 1 page.
> When I skip drawing of inserted image /Im0, then rendering is fast. So there
> is something wrong with drawing that image in
> {code}
> PageDrawer.drawImage(Image awtImage, AffineTransform at)
> {code}
> when I comment out line
> {code}
> graphics.drawImage(awtImage, imageTransform, null);
> {code}
> then rendering process takes 6s
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