<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>synthcal</title> <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1"> <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> -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> </i></font><font size="-1"><i style="font-family: monospace;"> -o o1,o2,o3, Set non-linear curve offset (default 0.0)</i></font><br> <font size="-1"><i 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</i></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="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>