[jira] [Resolved] (TIKA-4862) Add imageQuality to PDFBoxRenderer

["Tim Allison (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TIKA-4862?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tim Allison resolved TIKA-4862.
-------------------------------
    Fix Version/s: 4.1.0
       Resolution: Fixed

> Add imageQuality to PDFBoxRenderer
> ----------------------------------
>
>                 Key: TIKA-4862
>                 URL: https://issues.apache.org/jira/browse/TIKA-4862
>             Project: Tika
>          Issue Type: Task
>            Reporter: Tim Allison
>            Priority: Minor
>             Fix For: 4.1.0
>
>
> Default PDFBoxRenderer rendering is png, 300 dpi, gray scale, max compression. The user has no way to alter the compression/image quality.
>  
> If we drop compression effort to 0.5 for png, we can get 1.7x faster with only slightly larger pngs.
>  
> I discovered this on a run of 1k pdfs from digital corpora. This this cut total render+write time from ~4,960s to ~2,900s.
>  
> We can further improve performance further by without loss to OCR quality by dropping to 200 dpi... that'll be a separate ticket.



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