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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>synthcal</title>
<meta http-equiv="content-type" content="text/html;
charset=windows-1252">
<meta name="author" content="Graeme Gill">
</head>
<body>
<h2><b>spectro/synthcal</b></h2>
<h3>Summary</h3>
Create synthetic calibration file. The default is a linear
calibration
file.<br>
<h3>Usage</h3>
<font size="-1"><span style="font-family: monospace;">synthcal</span><i
style="font-family: monospace;"> </i><span style="font-family:
monospace;">[-options] </span><i style="font-family:
monospace;">basename<br>
</i><span style="font-family: monospace;"> -r
res Set
the calibration resolution (default 256)<br>
-t
N
i =
input, o = output, d = display (default)<br>
-d col_comb choose colorant
combination
from the following:<br>
0:
Print
grey<br>
1:
Video
grey<br>
2:
Print
RGB<br>
3:
Video
RGB<br>
4:
CMYK<br>
5:
CMY<br>
6:
CMYK
+ Light CM<br>
7:
CMYK
+ Light CMK<br>
8:
CMYK
+ Red + Blue<br>
9:
CMYK
+ Orange + Green<br>
10:
CMYK
+ Light CMK + Light Light K<br>
11:
CMYK
+ Orange + Green + Light CM<br>
12:
CMYK
+ Light CM + Medium CM<br>
-D colorant Add or delete colorant
from
combination:<br>
(Use
-??
to list known colorants)<br>
</span></font><font size="-1"><span style="font-family:
monospace;"> -o
o1,o2,o3, Set non-linear curve offset
(default 0.0)</span></font><br>
<font size="-1"><span style="font-family: monospace;"> -s
s1,s2,s3, Set non-linear curve scale
(default 1.0)<br>
-p p1,p2,p3, Set non-linear curve powers
(default 1.0)<br>
outfile
Base name
for output .cal file</span></font><br>
<h3>Comments<br>
</h3>
This is the tool creates a calibration (<a
href="File_Formats.html#.cal">.cal</a>)
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.<br>
<br>
<a name="r"></a>The <span style="font-weight: bold;">-r</span>
parameter
selects the table resolution. The default is 256.<br>
<br>
<a name="t"></a>The <span style="font-weight: bold;">-t</span>
option
selects the type of device the calibration file is intended for.
Default is display.<br>
<br>
<a name="d"></a>The <span style="font-weight: bold;">-d</span>
option
selects the device colorspace. The default for input and display is
<font style="font-weight: bold;" size="-1"><span style="font-family:
monospace;">Video RGB</span></font><font size="-1"><span
style="font-family: monospace;">, while the default for output
is <span style="font-weight: bold;">CMYK</span>.<br>
</span></font><br>
<a name="D"></a> The <b>-D</b> parameter modifies the colorspace
set
by <span style="font-weight: bold;">-d</span> by allowing
individual
colorants to be added or subtracted from the colorspace.<br>
<br>
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.<br>
<br>
</body>
</html>
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