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Posted to dev@pdfbox.apache.org by "Tilman Hausherr (JIRA)" <ji...@apache.org> on 2011/02/02 15:09:29 UTC
[jira] Updated: (PDFBOX-955) Can't extract b/w images from PDF

     [ https://issues.apache.org/jira/browse/PDFBOX-955?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tilman Hausherr updated PDFBOX-955:
-----------------------------------

    Description: 
I wrote a test application using org.apache.pdfbox.ExtractImages to... extract images as PNG. (This is the start of something bigger, which involves making a statistic about the content of over a million pages within PDF files) However all images I get are all black or all white when I test on our own PDF files. I did get correct images from a file that had color images. To extract, I tried page.convertToImage() and then writing with ImageIO.write(), but I also tried using PDFImageWriter, neither had success for b/w images.

If I can attach a file in the next window I will do it. The sample PDF is not confidential; it does give a warning "getRGBImage returned NULL" but other PDFs that don't give the warning (but are confidential) also fail.

  was:
I wrote a test application using org.apache.pdfbox.ExtractImages to... extract images as PNG. However all images I get are all black or all white when I test on our own PDF files. I did get correct images from a file that had color images. To extract, I tried page.convertToImage() and then writing with ImageIO.write(), but I also tried using PDFImageWriter, neither had success for b/w images.

If I can attach a file in the next window I will do it. The sample PDF is not confidential; it does give a warning "getRGBImage returned NULL" but other PDFs that don't give the warning (but are confidential) also fail.


> Can't extract b/w images from PDF
> ---------------------------------
>
>                 Key: PDFBOX-955
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-955
>             Project: PDFBox
>          Issue Type: Bug
>    Affects Versions: 1.4.0
>         Environment: Windows XP
>            Reporter: Tilman Hausherr
>            Priority: Blocker
>              Labels: extract
>         Attachments: ExtractImages.java, d0000040-01.png, d0000040.pdf
>
>
> I wrote a test application using org.apache.pdfbox.ExtractImages to... extract images as PNG. (This is the start of something bigger, which involves making a statistic about the content of over a million pages within PDF files) However all images I get are all black or all white when I test on our own PDF files. I did get correct images from a file that had color images. To extract, I tried page.convertToImage() and then writing with ImageIO.write(), but I also tried using PDFImageWriter, neither had success for b/w images.
> If I can attach a file in the next window I will do it. The sample PDF is not confidential; it does give a warning "getRGBImage returned NULL" but other PDFs that don't give the warning (but are confidential) also fail.

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