spectro/synthcal
Summary
Create synthetic calibration file. The default is a linear
calibration
file.
Usage
synthcal [-options] basename
-r
res Set
the calibration resolution (default 256)
-t
N
i =
input, o = output, d = display (default)
-d col_comb choose colorant
combination
from the following:
0:
Print
grey
1:
Video
grey
2:
Print
RGB
3:
Video
RGB
4:
CMYK
5:
CMY
6:
CMYK
+ Light CM
7:
CMYK
+ Light CMK
8:
CMYK
+ Red + Blue
9:
CMYK
+ Orange + Green
10:
CMYK
+ Light CMK + Light Light K
11:
CMYK
+ Orange + Green + Light CM
12:
CMYK
+ Light CM + Medium CM
-D colorant Add or delete colorant
from
combination:
(Use
-??
to list known colorants)
-o
o1,o2,o3, Set non-linear curve offset
(default 0.0)
-s
s1,s2,s3, Set non-linear curve scale
(default 1.0)
-p p1,p2,p3, Set non-linear curve powers
(default 1.0)
outfile
Base name
for output .cal file
Comments
This is the tool creates a calibration (.cal)
file that has a linear table
for each channel. This is useful in setting up a display for
evaluation, disabling printer calibration, testing, or to recover a
display that has a strange set of
Video LUTs loaded.
The -r
parameter
selects the table resolution. The default is 256.
The -t
option
selects the type of device the calibration file is intended for.
Default is display.
The -d
option
selects the device colorspace. The default for input and display is
Video RGB, while the default for output
is CMYK.
The -D parameter modifies the colorspace
set
by -d by allowing
individual
colorants to be added or subtracted from the colorspace.
Optionally it can be used to create a non-linear calibration file,
useful for diagnostics. Each of the device channel curves can be
given a gamma (power curve) shape, scaled to a maximum other than
1.0, and offset from a value other than 0.0.