Bug 695302 - Improvemensts for colour management
Summary: Improvemensts for colour management
Status: CONFIRMED
Alias: None
Product: Ghostscript
Classification: Unclassified
Component: PDF Writer (show other bugs)
Version: master
Hardware: All All
: P4 enhancement
Assignee: Ken Sharp
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2014-06-10 05:38 UTC by Ken Sharp
Modified: 2014-11-06 02:11 UTC (History)
0 users

See Also:
Customer:
Word Size: ---

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Ken Sharp 2014-06-10 05:38:50 UTC 
A collection of problems to address

There is no path to allow images with > 8 bits per component to be embedded in a PDF file.

Images with > 8 bits per component can't be converted to a different colour space.

It would be good to be able to convert ICCbased spaces from a PDF file into CIE spaces for ps2write.

We need to be able to ensure that ICCBased spaces are version 2 profiles, for PDF/A-1 creation.
Comment 1 Ken Sharp 2014-07-01 01:23:11 UTC 
We don't colour convert transparency blending spaces, see Bug #695306
Comment 2 Ken Sharp 2014-11-06 02:11:51 UTC 
Shadings (type 2 patterns) are rendered to images if ColorConversionStrategy is not LeaveColorUnchanged. We should sample the functions, convert the resulting data to the relevant colour space and build a new sampled function for the shading instead.