[jira] [Closed] (PDFBOX-2031) GrayScale images become inverted

["Tilman Hausherr (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PDFBOX-2031?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tilman Hausherr closed PDFBOX-2031.
-----------------------------------

       Resolution: Duplicate
    Fix Version/s: 1.8.5
         Assignee: Tilman Hausherr

No problem! You're welcome, as long as you don't create issues like PDFBOX-2029 :-)

> GrayScale images become inverted
> --------------------------------
>
>                 Key: PDFBOX-2031
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-2031
>             Project: PDFBox
>          Issue Type: Bug
>          Components: PDModel, Rendering
>    Affects Versions: 1.8.4
>         Environment: osx
>            Reporter: Elija B
>            Assignee: Tilman Hausherr
>             Fix For: 1.8.5
>
>
> PDPixelMap.getRGBImage() inverts images. After debugging it appears that the inversion happens at the end, in applyMasks(image);
> Some more debugging info:
> bitsPerComponent == 1
> getImageMask() == true
> getColorSpace() == PDDeviceGray
> map == new byte[] {(byte)0xff} // used for IndexColorModel
> In imageMask(baseImage) this happens:
> graphics.setColor(Color.BLACK);
> graphics.fillRect(0, 0, baseImage.getWidth(), baseImage.getHeight());
>         // assume default values ([0,1]) for the DecodeArray
>         // TODO DecodeArray == [1,0]
>         graphics.setComposite(AlphaComposite.DstIn);
>         graphics.drawImage(baseImage, null, 0, 0);
>         graphics.dispose();
>         return stencilMask;
> I wish I could provide a sample file, but I have no sanitized data files. 



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