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https://issues.apache.org/jira/browse/PDFBOX-2123?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14020994#comment-14020994
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Petr Slaby commented on PDFBOX-2123:
------------------------------------
{quote}
You are checking that the 1bit image has the default decode, but in the 1bit
handler you handle both decodes?!
{quote}
You are right, just copy pasted the condition from the 8bit version without
thinking much about it. My fault.
> Optimize reading of 1-bit depth images in SampleImageReader
> -----------------------------------------------------------
>
> Key: PDFBOX-2123
> URL: https://issues.apache.org/jira/browse/PDFBOX-2123
> Project: PDFBox
> Issue Type: Improvement
> Components: PDModel
> Affects Versions: 2.0.0
> Reporter: Petr Slaby
> Assignee: Tilman Hausherr
> Fix For: 2.0.0
>
> Attachments: 000008_test-scan 20121105144109807.pdf,
> SampledImageReader.java.patch
>
>
> Reading of 1-bit depth (black and white) images in SampleImageReader can be
> optimized. The attached patch reduces the time spent in
> SampleImageReader#getRGBImage() from 4 seconds to 1.8 second on my notebook
> with the attached PDF.
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