Optimized Color Management for quality-focused prepress
If you use different applications from different
manufacturers and still want to achieve quality in prepress, all
the components involved in the processing of color images need to
be reliably attuned to one another. Since the advent of desktop
publishing, Color Management has therefore been an essential
precondition for achieving quality. Heidelberg has been continually
improving the necessary tools and adapting them to suit
requirements, and has now prepared the new program versions of its
Coloropen solutions package for presentation at the CeBIT 2000
exhibition. The Scanopen, Viewopen and Print-open programs generate
ICC profiles (ICC = International Color Consortium) for scanners,
monitors and all the associated equipment used in the output
process such as proofers, printers and filmsetters.
Scanopen ICC 2.1: Profile calculation improved even further
With Scanopen ICC, any scanner can be profiled in a
matter of minutes, thereby preparing the ground for true color
work. The program is available for PC users with Windows 95 and
Windows NT and for Macintosh users. Less experienced users can call
upon the built-in wizard to guide them through the program sequence
step by step and perform simple tasks automatically, while expert
operation allows Color Management specialists to work quickly using
the clearly-arranged menu.
To improve ICC profile calculation still further, the
relevant algorithms have been optimized in version 2.1. White
scaling is now more precise, while there is also greater depth of
detail in the shadows for transparencies. It is now also possible
to load 16-bit calibration scan data, and adjustments have been
made to accommodate the latest version 6.0 of Heidelberg's
LinoColor scanning and repro software. The options of choosing
different profile sizes and quality levels and performing quality
control by displaying calibration results in graphic form have also
been maintained.
The software and documentation are available in five
languages (German, English, French, Italian and Spanish). The
package includes the complete target set for photographic papers
from Agfa, Fuji and Kodak.
Viewopen ICC 2.0: Optimum conditions for soft proofs
Viewopen ICC delivers something which DTP users have been
demanding since the technology was first developed, and which is
still not an automatic feature for color matching - WYSIWYG
operation. Monitor profiling is a very important factor in the
end-to-end Color Management system - particularly when soft proofs
are generated on the monitor.
There are two profile sizes for monitor calibration in the
new version 2.0 of Viewopen ICC, one of them matrix-based (e.g. for
use in PhotoShop) and the other based on three-dimensional look-up
tables. A helpful feature for the user is the fact that, when
profiling, the ambient brightness is taken into account (Color
Appearance Model) and the contrast/brightness setting on the
monitor is adjusted with the aid of measuring instruments. As well
as the Sequel Chroma 3 Color Calibrator, suitable instruments
recommended by Heidelberg now also include color measuring devices
such as the Sequel Chroma 4, the Gretag Spectrolino and the X-Rite
DTP-92.
Like Scanopen, Viewopen supports both professional operation
and a wizard to assist beginners. The software and documentation
are available in German, English, French, Italian and Spanish.
Printopen ICC 3.0.2 (Mac) and ICC 3.1.2 (PC): New license
key
If you want to make optimum use of the real color space of a
proofer, color printer or printing press, you need to characterize
it, i.e. measure its various parameters. You also need to use a
printing table or profile to specify how images from the LAB or RGB
color space should be imaged in the output color space - normally
CMY(K). This task is performed by Printopen, which is available in
two versions (3.0.2 for Macintosh and 3.12 for PC with different
functionality).
In update 3.0.2 the proofing tables for black generation have
been revised and the algorithms for profile calculation have been
optimized, particularly with regard to shadow detail in
separations. Measuring instruments can now also be connected to the
PowerMac G4 and Mac OS 9. New devices recommended by Heidelberg
include Gretag SpectroEye, X-Rite 528, X-Rite DTP 41 T, Color
Savvy, Barbieri 1150 and ColorScout S. Software protection of the
new version is via a license key which permits use. Software and
documentation are available in German, English, French, Italian and
Spanish.
PC version 3.1.2. includes CMYK post-editing functions for
printing and proofing tables as well as optimized profile
calculation algorithms, particularly for shadow detail in
separations. Users also benefit from new profiles with
transformation tables for process conversion to the print output
(gamut mapping) and a new averaging function for color measurement
values from several test forms. The recommended measuring
instruments are the same as for the Mac version (see above), and
the PC version also uses a license key to activate the software.
Heidelberg will be demonstrating Coloropen as part of its
presentation of the Prinergy workflow management system at the
CeBit exhibition in Hall 1, Stand 1/4c 1.
For further information:
Heidelberger Druckmaschinen AG
Thomas Fichtl
Tel.: +49 (0)6221 92 47 47
E-mail:
thomas.fichtl@heidelberg.com