Hi Christian, Fixed in GIT. That was a very elusive bug, it shows when computed K tone curves in black preservation are sligtly non-monotonic. I've checked a number of images and now seems to be working.
Many thanks for reporting Regards Marti Original Message: ----------------- From: Christian Läntzsch chlaentz...@googlemail.com Date: Wed, 20 Apr 2011 14:47:14 +0200 To: lcms-user@lists.sourceforge.net Subject: [Lcms-user] BlackPreservation/BlackPointCompensation Issue I use lots of multi-profile-transforms and I discovered a bug in a special configuration in which BlackPreservation and BlackPointCompensation is involved. Try this, for example (the connection is without deep meaning its just for showing the bug) CMYK->CMYK, 8 Bit samples, Profilcount=4, HiresPrecalc=true, RI=relativeIntent ISOCoated->ISOcoatedISOnewspaper26v4.icc>ISOnewspaper26v4.icc->ISOcoated.icc If you turn off BlackPreservation, all is fine. If you turn on BlackPreservation AND BlackPointCompensation, its all fine. If you turn on BlackPreservation BUT BlackPointCompensation off, it crashes with following error: Assertion failed: (Curve != ((void *)0)), file c:\mms\pps_6_0_develop\lib\mmsicc \littlecms\src\cmsgamma.c, line 1058 This error occurs ONLY, if you use the ISOnewspaper26v4 in the middle. If you use other CMYK Profiles, its ok as far as Ive tested. But since I need newspaper in the middle and its sort of standard-profile, its (hopefully) worth to be examined. Has anybody an idea about that? I use the latest git version dated 12-april-2011 Chris -------------------------------------------------------------------- mail2web LIVE Free email based on Microsoft® Exchange technology - http://link.mail2web.com/LIVE ------------------------------------------------------------------------------ Benefiting from Server Virtualization: Beyond Initial Workload Consolidation -- Increasing the use of server virtualization is a top priority.Virtualization can reduce costs, simplify management, and improve application availability and disaster protection. Learn more about boosting the value of server virtualization. http://p.sf.net/sfu/vmware-sfdev2dev _______________________________________________ Lcms-user mailing list Lcms-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lcms-user
