Article View: comp.sys.amiga.tech
Article #7897Re: QMS plotmaster colors & pantone colors
From: Grant Blair
Date: Mon, 07 Jan 1991 14:29
Date: Mon, 07 Jan 1991 14:29
36 lines
1801 bytes
1801 bytes
In article <1390@radius.com> pierce@radius.com (Pierce T. Wetter III) writes: >>>The problem is : monitor colors != paper colors. > [Much other text deleted...] > > There's an alogrithm: > > gamma correct your monitor. > convert from your monitors phosphor set to CIE XYZ (a device independent > color space based on human vision). > Buy a spectrophotometer. > > Print out every possible combination of C,M,Y,K. > Measure output swatches with spectrophotometer to make a XYZ-CMYK > lookup table. > > Convert images to XYZ, then lookup CMYK. > > Print. > > > Believe or not, that's about the state of the art (minus details). > Also worth adding, for those about to embark upon attacking this problem, is the knowledge that not every monitor color can be expressed on paper as a CMYK combination. i.e. the monitor's gamut is often a superset of the printer's gamut and in places the two may not overlap at all... -- +-----------------------------------------------------------------------------+ |Grant C Blair, DuPont Imaging Systems, Newark, DE 19702, USA | |blair@pyro.ei.dupont.com (192.58.195.64) (302)-733-9533 | +-----------------------------------------------------------------------------+
Technical Details
Message-ID:
<1991Jan7.142913.10145@pyro.ei.dupont.com>Path:
arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!zaphod.mps.ohio-state.edu!rpi!uupsi!pyro!blairReferences:
<521358@neabbs.UUCP> <1990Dec28.225435.214@lavaca.uh.edu> <1390@radius.com>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!zaphod.mps.ohio-state.edu!rpi!uupsi!pyro!blair From: blair@pyro.ei.dupont.com (Grant Blair) Newsgroups: comp.sys.amiga.tech Subject: Re: QMS plotmaster colors & pantone colors Message-ID: <1991Jan7.142913.10145@pyro.ei.dupont.com> Date: 7 Jan 91 14:29:13 GMT References: <521358@neabbs.UUCP> <1990Dec28.225435.214@lavaca.uh.edu> <1390@radius.com> Organization: DuPont Electronic Imaging Lines: 36