ICEpdf
  1. ICEpdf
  2. PDF-246

CMYK to RGB colours conversions are too dark

          Details

          • Type: Bug Bug
          • Status: Closed
          • Priority: Major Major
          • Resolution: Fixed
          • Affects Version/s: 4.1.2
          • Fix Version/s: 4.1.3
          • Component/s: Core/Parsing
          • Labels:
            None
          • Environment:
            ICEpdf 4.1.2 and higher

            Description

            In version 4.1.2 we introduced an new algorithm to convert CMYK to RGB for various image types. In general the algorithm did a better job then the previous version but as a customer has pointed out that most converted images render a darker then the baseline.

              Activity

              Repository Revision Date User Message
              ICEsoft Public SVN Repository #23757 Mon Jan 10 09:07:11 MST 2011 patrick.corless PDF-246 tweaked the black channel in the cmyk to rgb colour conversion algorithm. The new smaller fraction value of black lights up most images to be much closer to the baseline. The logic is a little fuzzy and subjective but offers an improvement over the original algorithm.
              Files Changed
              Commit graph MODIFY /icepdf/trunk/icepdf/core/src/org/icepdf/core/pobjects/Stream.java

                People

                • Assignee:
                  Patrick Corless
                  Reporter:
                  Patrick Corless
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                  Dates

                  • Created:
                    Updated:
                    Resolved: