152 lines
5.1 KiB
HTML
Executable File
152 lines
5.1 KiB
HTML
Executable File
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<meta content="text/html; charset=windows-1252" http-equiv="content-type">
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<title>synthcal</title>
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<meta name="author" content="Graeme Gill">
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</head>
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<body>
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<h2><b>spectro/synthcal</b></h2>
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<h3>Summary</h3>
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Create synthetic calibration file. The default is a linear calibration file.<br>
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<h3>Usage</h3>
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<span style="font-family: monospace;">synthcal [-options] <i>basename</i></span><br>
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<span style="font-family: monospace;"> -r
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res Set the
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calibration resolution (default 256)<br>
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-t
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N i =
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input, o = output, d = display (default)<br>
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-d col_comb choose colorant combination from
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the following:<br>
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0:
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Print
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grey<br>
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1:
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Video
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grey<br>
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2:
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Print
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RGB<br>
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3:
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Video
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RGB<br>
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4: CMYK<br>
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5: CMY<br>
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6:
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CMYK
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+ Light CM<br>
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7:
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CMYK
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+ Light CMK<br>
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8:
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CMYK
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+ Red + Blue<br>
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9:
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CMYK
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+ Orange + Green<br>
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10:
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CMYK
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+ Light CMK + Light Light K<br>
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11:
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CMYK
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+ Orange + Green + Light CM<br>
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12:
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CMYK
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+ Light CM + Medium CM<br>
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-D colorant Add or delete colorant from
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combination:<br>
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(Use
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-??
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to list known colorants)<br>
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-o o1,o2,o3,... Set non-linear curve offset, last to all chan.
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(default 0.0)<br>
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-s s1,s2,s3,... Set non-linear curve scale, last to all chan.
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(default 1.0)<br>
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-p p1,p2,p3,... Set non-linear curve powers, last to all chan.
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(default 1.0)</span><br>
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<i> </i><span style="font-family: monospace;"><i>basename</i>
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Base name for output .cal file</span><br>
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<h3>Comments<br>
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</h3>
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This is the tool creates a calibration (<a href="File_Formats.html#.cal">.cal</a>)
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file that has a linear table for each channel. This is useful in setting up
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a display for evaluation, disabling printer calibration, testing, or to
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recover a display that has a strange set of Video LUTs loaded.<br>
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<br>
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<a name="r"></a>The <span style="font-weight: bold;">-r</span> parameter
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selects the table resolution. The default is 256.<br>
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<br>
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<a name="t"></a>The <span style="font-weight: bold;">-t</span> option
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selects the type of device the calibration file is intended for. Default is
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display.<br>
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<br>
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<a name="d"></a>The <span style="font-weight: bold;">-d</span> option
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selects the device colorspace. The default for input and display is <font style="font-weight: bold;"
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size="-1"><span style="font-family: monospace;">Video RGB</span></font><font
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size="-1"><span style="font-family: monospace;">, while the default for
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output is <span style="font-weight: bold;">CMYK</span>.<br>
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</span></font><br>
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<a name="D"></a> The <b>-D</b> parameter modifies the colorspace set by <span
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style="font-weight: bold;">-d</span> by allowing individual colorants to
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be added or subtracted from the colorspace.<br>
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<br>
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Optionally it can be used to create a non-linear calibration file, useful
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for diagnostics. Each of the device channel curves can be given a gamma
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(power curve) shape, scaled to a maximum other than 1.0, and offset from a
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value other than 0.0. If less than the number of channels values is set in
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-o, -s or -p, then the last value will be extended to the remaining
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channels.<br>
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<br>
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</body>
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</html>
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