Elija B created PDFBOX-2031:
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Summary: GrayScale images become inverted
Key: PDFBOX-2031
URL: https://issues.apache.org/jira/browse/PDFBOX-2031
Project: PDFBox
Issue Type: Bug
Components: PDModel
Affects Versions: 1.8.4
Environment: osx
Reporter: Elija B
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;
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