<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" "http://www.w3.org/TR/REC-html40/strict.dtd"> <html><head><meta name="qrichtext" content="1" /><style type="text/css"> p, li { white-space: pre-wrap; } </style></head><body style=" font-family:'DejaVu Sans'; font-size:12pt; font-weight:400; font-style:normal;"> On Sunday, January 16, 2011 02:54:52 pm Leonard Rosenthol wrote: > If the work is going on with PDF (which, of course, I fully support!), then > will it support only PDF (ISO 32000) or also the various ISO subsets > (PDF/A, PDF/X, etc.)?? As you may know, there are significant > differences in how color management is to take place between the various > standards - you can't treat all PDF as equal! I hope the team is working > on handling all the various scenarios - especially since the proprietary > one in Mac OS X does not (and I'd love to see that replaced that with one > that does!!). > > As always, if I can help in any way (short of coding :), don't hesitate to > ask! > > Leonard Rosenthol > PDF Architect > Adobe Systems This I do not know since I am not one of those working on the libraries that handle the rasterization although I have submitted some CM related patches for poppler. I suspect that in the near term Ghostscript will have the more complete implementation. With a little searching on the web I found that GS 9.0 was released on Sept 17, 2010 and from the release announcement I see the following: "This release includes a move to an ICC-based color rendering workflow. The design allows easy integration of 3rd party color management modules (CMMs) and management of DeviceN and spot source colors with ICC profiles as well as with non-ICC proprietary methods. The default CMM is the well known littleCMS. Postscript color objects and non-ICC CIE-based PDF color spaces are converted to equivalent ICC profiles enabling complete color management for all color spaces by an ICC-based CMM. New command line options enable the specification of gray, rgb and cmyk default ICC profiles as well as output device ICC profiles. The new work flow provides performance improvements in the rendering of images, shadings and transparencies. In addition, the color conversions are designed to work efficiently in multithreaded display list (c-list) rendering through the use of a shared link cache. Finally, proper ICC based rendering now occurs for ALL XPS objects including Named colors, N-Channel colors and images with internally embedded ICC profiles." There are numerous (PDF) documents on the web that cover the CM architecture of GS 9.0. But a quick search of these does not indicate which specific PDF standards are supported. The primary architect for the CM GS work is Dr. Michael Vrhel who works for Artifex the GS vendor. In the past he has posted to this list and may still keep an eye on it. Perhaps he can answer your questions. I see that my distro has GS 9.0 as a test version with 8.71 as the stable version. So it it is probably uncommon for distros to have GS 9.0 installed at this time. Hal </body></html>