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https://issues.apache.org/jira/browse/PDFBOX-1997?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13946840#comment-13946840
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Tilman Hausherr commented on PDFBOX-1997:
-----------------------------------------

The difference is that for the attached pdf, it is this pdf segment that 
results in a call of toRGB():

/CS0 cs 74 0 0 sc

So it would be enough to remove the code that isn't mentioned in the PDF spec 
(I tried this). But....  for the file PDFBOX-1870-technical_v2_p9.pdf , toRGB() 
is called from PDCIEBasedColorSpace.toRGBImage() and there is a different scale 
than when called from within PDColorSpace.toPaint(), so my solution doesn't 
work.

> CIE LAB item missing in rendering
> ---------------------------------
>
>                 Key: PDFBOX-1997
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-1997
>             Project: PDFBox
>          Issue Type: Bug
>          Components: Rendering
>    Affects Versions: 2.0.0
>            Reporter: Tilman Hausherr
>              Labels: regression
>         Attachments: text_graphic_image.pdf, text_graphic_image.pdf-1.png
>
>
> The file from PDFBOX-1681 is missing the "CIELAB" output, it was there a few 
> weeks ago.



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