Is the file encrypted with a user or owner password?
Is it an indexed file (such as a GIF or indexed PNG)?
----
Thanks,
Adam
From:
"Eric Schwarzenbach (JIRA)" <j...@apache.org>
To:
dev@pdfbox.apache.org
Date:
03/04/2011 17:07
Subject:
[jira] Commented: (PDFBOX-958) convertToImage mangles images which were in
the PDF
[
https://issues.apache.org/jira/browse/PDFBOX-958?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13002898#comment-13002898
]
Eric Schwarzenbach commented on PDFBOX-958:
-------------------------------------------
We also have another document (from a client so I can't share it), with a
number of black and white photos in it, all of which come out with the
colors inverted (like a negative). There is also a non-photographic image,
a map, which gets messed up in an entirely different way. In general our
success rate just trying random PDFs had not been great for images. Could
one of the PDFBox developers comment? Is this an area of the tool that is
in rudimentary state?
> convertToImage mangles images which were in the PDF
> ---------------------------------------------------
>
> Key: PDFBOX-958
> URL: https://issues.apache.org/jira/browse/PDFBOX-958
> Project: PDFBox
> Issue Type: Bug
> Affects Versions: 1.2.1, 1.4.0, 1.5.0
> Environment: RHEL5 and WinXP, java version "1.6.0_23"
> Reporter: Eric Schwarzenbach
> Priority: Critical
> Attachments: Image of Page 13.jpeg, Image of Page 13.png,
Wrycan® Lorem Ipsum Test.pdf
>
>
> Of the PDFs we've tried running through PDFBox and generating page
images, a number of them (coming from disparate sources and method of
creation) seem to produce images where an image that was embedded in the
page of the PDF shows somewhat mangled. It seems to be divided by
horizontal stripes, where some stripes look normal, others seem to have
some kind of "smearing" effect going on. See attached images and original
PDF (image is of page 13).
> I marked this as critical as we are trying to use PDFBox in a project
where page images are crucial, and inability to produce reasonable looking
page images is pretty much a deal breaker.
> The code we use to extract the images looks more or less like the
following:
> BufferedImage image = page.convertToImage();
>
> SmartDeferredFileOutputStream outStream = new
SmartDeferredFileOutputStream();
> String[] writerFormatNames = ImageIO.getWriterFormatNames();
> ImageIO.write(image, "jpeg", outStream);
> outStream.close()
> We've also tried specifying "png". In both "jpg" and "png" cases we get
an image file that is indeed the correct format, and both images look
exactly the same.
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