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    <title>synthcal</title>
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    <meta name="author" content="Graeme Gill">
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    <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;">&nbsp;-r
        res&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Set
        the calibration resolution (default 256)<br>
        &nbsp;-t
        N&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        i =
        input, o = output, d = display (default)<br>
        &nbsp;-d col_comb&nbsp;&nbsp;&nbsp;&nbsp; choose colorant
        combination
        from the following:<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
0:
Print
        grey<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
1:
Video
        grey<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
2:
Print
        RGB<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
3:
Video
        RGB<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        4:
        CMYK<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        5:
        CMY<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
6:
CMYK
        + Light CM<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
7:
CMYK
        + Light CMK<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
8:
CMYK
        + Red + Blue<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
9:
CMYK
        + Orange + Green<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
10:
CMYK
        + Light CMK + Light Light K<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
11:
CMYK
        + Orange + Green + Light CM<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
12:
CMYK
        + Light CM + Medium CM<br>
        &nbsp;-D colorant&nbsp;&nbsp;&nbsp;&nbsp; Add or delete colorant
        from
        combination:<br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
(Use
-??
        to list known colorants)<br>
      </span></font><font size="-1"><span style="font-family:
        monospace;">&nbsp;-o
        o1,o2,o3,&nbsp;&nbsp;&nbsp; Set non-linear curve offset
        (default 0.0)</span></font><br>
    <font size="-1"><span style="font-family: monospace;">&nbsp;-s
        s1,s2,s3,&nbsp;&nbsp;&nbsp; Set non-linear curve scale
        (default 1.0)<br>
        &nbsp;-p p1,p2,p3,&nbsp;&nbsp;&nbsp; Set non-linear curve powers
        (default 1.0)<br>
        &nbsp;outfile&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        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>
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