Details
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Type:
Bug
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Status: Closed
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Priority:
Major
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Resolution: Fixed
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Affects Version/s: None
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Fix Version/s: 4.3.4
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Component/s: Core/Parsing
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Labels:None
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Environment:any
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ICEsoft Forum Reference:
Description
The community member submitted two confidential document that where produced using the a Xerox Work Center. The PDF's in question render but there appears to be a few issue around CCITTFax colour inversion as well as a masking issue.
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It turns out the problem is related to masking support for JBig2 images. The PDF is made up off one large JPEG and various JBIG2 images are applied to bring out detail in areas of the original jpeg that aren't clear. The jbig images are special in that they are marked as masked and must be treated differently then a standard image.
In this case we apply the current fill colour to the masked pixels and the rest become transparent. And presto the PDF now render correctly.
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Patrick Corless
added a comment - It turns out the problem is related to masking support for JBig2 images. The PDF is made up off one large JPEG and various JBIG2 images are applied to bring out detail in areas of the original jpeg that aren't clear. The jbig images are special in that they are marked as masked and must be treated differently then a standard image.
In this case we apply the current fill colour to the masked pixels and the rest become transparent. And presto the PDF now render correctly.
Sample files have been added to the private support drive.