ICEpdf
  1. ICEpdf
  2. PDF-278

Not apply Jbig2 image mask correctly

          Details

          • Type: Bug Bug
          • Status: Closed
          • Priority: Major Major
          • Resolution: Fixed
          • Affects Version/s: 4.2
          • Fix Version/s: 4.3.4, 4.4, 5.0
          • Component/s: Core/Parsing
          • Labels:
            None
          • Environment:
            any

            Description

            The PDF in question contains a number of jbig2 image scans. The second page contains a jbig2 image that has the /imageMask property enabled. In such a case the image should be alter so that alpha values are applied to the image.

            As of currently we do nothing to handle the ImageMask.

              Activity

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              Patrick Corless created issue -
              Patrick Corless made changes -
              Field Original Value New Value
              Salesforce Case [5007000000FafB1]
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              Patrick Corless added a comment -

              Pushing to 4.3

              Show
              Patrick Corless added a comment - Pushing to 4.3
              Patrick Corless made changes -
              Fix Version/s 4.3 [ 10266 ]
              Fix Version/s 4.2.2 [ 10265 ]
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              Patrick Corless added a comment -

              More specifically the pdf file servlet_03.pdf uses a pencil masking which isn't handled at all in the Stream class.

              The spec states "...if ImageMask entry is true, the sample data shall be interpreted as a stencil mask for applying the graphics state's nonstroking colour parameters (see 8.9.6.2, "Stencil Masking")."

              This should be handles by other images types but can first be cut into the jbig2 decoder call. should be relatively straight forward to get this working.

              Show
              Patrick Corless added a comment - More specifically the pdf file servlet_03.pdf uses a pencil masking which isn't handled at all in the Stream class. The spec states "...if ImageMask entry is true, the sample data shall be interpreted as a stencil mask for applying the graphics state's nonstroking colour parameters (see 8.9.6.2, "Stencil Masking")." This should be handles by other images types but can first be cut into the jbig2 decoder call. should be relatively straight forward to get this working.
              Patrick Corless made changes -
              Fix Version/s 5.0 [ 10314 ]
              Fix Version/s 4.3 [ 10266 ]
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              Patrick Corless added a comment -

              This masking issue appears to be fixed on 4.3.3 branch as well as the 5.0 trunk. Closing

              Show
              Patrick Corless added a comment - This masking issue appears to be fixed on 4.3.3 branch as well as the 5.0 trunk. Closing
              Patrick Corless made changes -
              Status Open [ 1 ] Resolved [ 5 ]
              Fix Version/s 4.4 [ 10670 ]
              Fix Version/s 4.3.4 [ 10341 ]
              Resolution Fixed [ 1 ]
              Patrick Corless made changes -
              Status Resolved [ 5 ] Closed [ 6 ]

                People

                • Assignee:
                  Patrick Corless
                  Reporter:
                  Patrick Corless
                • Votes:
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                  Dates

                  • Created:
                    Updated:
                    Resolved: