The gamt tag cannot be used because it is broken on many profiles. Lcms does not uses this tag but its own method (going back and forth in rel.col intent to see if the color changes). That is the gamut check capability, described in documentation.
For a better method, build a gamut solid and check the point for inclusion. A nice way is Jan Morovic's "segment maxima" which implies spherical coordinates. Hope this helps Marti. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of John Weissberg Sent: Saturday, August 18, 2007 5:30 PM To: lcms-user@lists.sourceforge.net Subject: [Lcms-user] Detecting if point is in or out of gamut We are building printer profiles. We are searching for a method to detect whether a given point in is in or out of the printer's gamut. I understand that many people feel the data in the gamt tag cannot be used reliably. If we have access to the original measurement data used to create the ICC profile in the first place, is there a reliable method to determining whether a point is in/out of gamut? Do any of the existing functions/methods in littlecms do this? ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Lcms-user mailing list Lcms-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lcms-user ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Lcms-user mailing list Lcms-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lcms-user
