ICEpdf
  1. ICEpdf
  2. PDF-454

Numerous image decoding issues when process documents from Xerox WorkCenter 7556

          Details

          • Type: Bug Bug
          • Status: Closed
          • Priority: Major Major
          • Resolution: Fixed
          • Affects Version/s: None
          • Fix Version/s: 4.3.4
          • Component/s: Core/Parsing
          • Labels:
            None
          • Environment:
            any

            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.

              Activity

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              Patrick Corless created issue -
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              Patrick Corless added a comment -

              Sample files have been added to the private support drive.

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              Patrick Corless added a comment - Sample files have been added to the private support drive.
              Repository Revision Date User Message
              ICEsoft Public SVN Repository #30609 Fri Aug 24 14:46:27 MDT 2012 patrick.corless PDF-454 addition ImageMask=true support of jbig2 encoded images.
              Files Changed
              Commit graph MODIFY /icepdf/trunk/icepdf/core/src/org/icepdf/core/pobjects/Stream.java
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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.

              Show
              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.
              Patrick Corless made changes -
              Field Original Value New Value
              Status Open [ 1 ] Resolved [ 5 ]
              Resolution Fixed [ 1 ]
              Repository Revision Date User Message
              ICEsoft Public SVN Repository #30773 Mon Sep 10 10:44:48 MDT 2012 patrick.corless PDF-454 addition ImageMask=true support of jbig2 encoded images.
              Files Changed
              Commit graph MODIFY /icepdf/branches/icepdf-4.3.3/icepdf
              Commit graph MODIFY /icepdf/branches/icepdf-4.3.3/icepdf/core/src/org/icepdf/core/pobjects/Stream.java
              Repository Revision Date User Message
              ICEsoft Public SVN Repository #30774 Mon Sep 10 10:45:43 MDT 2012 patrick.corless PDF-454 addition ImageMask=true support of jbig2 encoded images.
              Files Changed
              Commit graph MODIFY /icepdf/branches/icepdf-4.3.3/icepdf
              Commit graph MODIFY /icepdf/branches/icepdf-4.3.3/icepdf/core/src/org/icepdf/core/pobjects/Stream.java
              Patrick Corless made changes -
              Status Resolved [ 5 ] Closed [ 6 ]

                People

                • Assignee:
                  Patrick Corless
                  Reporter:
                  Patrick Corless
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                  Dates

                  • Created:
                    Updated:
                    Resolved: