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authorJörg Frings-Fürst <debian@jff-webhosting.net>2014-09-01 13:56:46 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2014-09-01 13:56:46 +0200
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+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
+<html>
+ <head>
+ <title>colprof</title>
+ <meta http-equiv="content-type" content="text/html;
+ charset=ISO-8859-1">
+ <meta name="author" content="Graeme Gill">
+ </head>
+ <body>
+ <h2> profile/colprof</h2>
+ <h3>Summary</h3>
+ Create an&nbsp;<a href="File_Formats.html#ICC">ICC</a> profile from
+ the&nbsp;<a href="File_Formats.html#.ti3">.ti3</a> test chart patch
+ values.<br>
+ <h3>Usage Summary</h3>
+ &nbsp;<tt><small>colprof [-<i>options</i>] inoutfile<br>
+ &nbsp;<a href="#v">-v</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
+
+
+
+
+
+
+
+ &nbsp; &nbsp; &nbsp; &nbsp; Verbose mode<br>
+ &nbsp;<a href="#A">-A "manufacturer"</a>&nbsp; Set the
+ manufacturer description string<br>
+ &nbsp;<a href="#M">-M "model"</a>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Set the model
+ description string<br>
+ &nbsp;<a href="#D">-D "description"</a>&nbsp;&nbsp; Set the
+ profile Description string&nbsp; (Default "<span
+ style="font-style: italic;">inoutfile</span>")<br>
+ &nbsp;<a href="#C">-C "copyright"</a> &nbsp;&nbsp;&nbsp; Set the
+ copyright string<br>
+ &nbsp;<a href="#Za">-Z tmnb &nbsp;</a>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Attributes:
+ Transparency, Matte, Negative, BlackAndWhite<br>
+ </small></tt><tt><small>&nbsp;<a href="colprof.html#Zi">-Z prsa</a>&nbsp;
+
+ &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Default
+ intent: Perceptual, Rel. Colorimetric, Saturation, Abs.
+ Colorimetric</small></tt><tt><br>
+ </tt><tt> </tt><tt><small>&nbsp;<a href="#q">-q lmhu</a>
+ &nbsp;&nbsp; &nbsp; &nbsp; &nbsp;&nbsp;&nbsp; Quality - Low,
+ Medium (def), High, Ultra<br>
+ &nbsp;<a href="#b">-b [lmhun]</a>&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;
+ &nbsp; Low quality B2A table - or specific B2A quality or none
+ for input device<br>
+ &nbsp;<a href="#y">-y</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
+
+
+
+
+
+
+
+ &nbsp; &nbsp; &nbsp; &nbsp; Verify A2B profile<br>
+ &nbsp;<a href="#ni">-ni</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
+
+
+
+
+
+
+
+ &nbsp; &nbsp; &nbsp; &nbsp; Don't create input (Device) shaper
+ curves<br>
+ </small></tt><tt><small>&nbsp;<a href="#np">-np</a>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
+ Don't create input (Device) grid position curves</small></tt><tt><br>
+ </tt><tt> </tt><tt><small>&nbsp;<a href="#no">-no</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
+
+
+
+
+
+
+
+ &nbsp; &nbsp; &nbsp; &nbsp; Don't create output (PCS) shaper
+ curves<br>
+ </small></tt><tt><small>&nbsp;<a href="#nc">-nc</a>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
+ Don't put the input .ti3 data in the profile</small></tt><tt><br>
+ </tt><tt> </tt><tt><small>&nbsp;<a href="#k">-k zhxr</a>&nbsp;
+ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Black generation: z = zero K,<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;&nbsp;&nbsp;
+h
+=
+0.5
+K
+(def),
+x
+=
+
+
+
+
+
+
+
+
+
+
+
+ max K, r = ramp K<br>
+ &nbsp;<a href="#kp">-k p stle stpo enpo enle shape</a><br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;&nbsp;&nbsp;
+stle:
+K
+level
+at
+White
+0.0
+
+
+
+
+
+
+
+
+
+
+
+ - 1.0<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+stpo:
+start
+point
+of
+transition
+Wh
+
+
+
+
+
+
+
+
+
+
+
+ 0.0 - Bk 1.0<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+enpo:
+End
+point
+of
+transition
+Wh
+
+
+
+
+
+
+
+
+
+
+
+ 0.0 - Bk 1.0<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+enle:
+K
+level
+at
+Black
+
+
+
+
+
+
+
+
+
+
+
+ 0.0 - 1.0<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+shape:
+1.0
+=
+straight,
+0.0-1.0
+concave,
+
+
+
+
+
+
+
+
+
+
+
+ 1.0-2.0 convex<br>
+ &nbsp;<a href="#K">-K parameters</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+ Same as -k, but target is K locus rather than K value itself<br>
+ &nbsp;<a href="#l">-l <i>tlimit</i></a>&nbsp;&nbsp; &nbsp;
+ &nbsp; &nbsp;&nbsp; override CMYK total ink limit, 0 - 400%
+ (default from .ti3)<br>
+ &nbsp;<a href="#L">-L <i>klimit</i></a>&nbsp;&nbsp; &nbsp;
+ &nbsp; &nbsp;&nbsp; override black ink limit, 0 - 100% (default
+ from .ti3)<br>
+ &nbsp;<a href="#a">-a lxXgsmGS</a> &nbsp;&nbsp; &nbsp; &nbsp;
+ Algorithm type override<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+l
+=
+Lab
+cLUT
+(def.),
+
+
+
+
+
+
+
+
+
+
+
+ x = XYZ cLUT, X = display XYZ cLUT + matrix<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+g
+=
+gamma+matrix,
+s
+=
+
+
+
+
+
+
+
+
+
+
+
+ shaper+matrix, m = matrix only,<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+G
+=
+single
+gamma+matrix,
+S
+=
+
+
+
+
+
+
+
+
+
+
+
+ single shaper+matrix<br>
+ &nbsp;<a href="#u">-u</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+
+
+
+ If input profile, auto scale WP to allow extrapolation</small></tt><tt><br>
+ </tt><tt> </tt><tt><small><small>&nbsp;<a href="#uc">-uc</a>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp;
+ &nbsp;&nbsp; If input profile, clip cLUT values above WP<br>
+ </small>&nbsp;</small></tt><tt><small><a href="#U">-U <span
+ style="font-style: italic;">scale</span></a>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; If input
+ profile, scale media white point by scale</small></tt><tt><br>
+ </tt><tt> </tt><tt>&nbsp;</tt><tt><a href="#R">-R</a></tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+Restrict
+white
+&lt;=
+1.0,
+black
+and
+
+
+
+
+
+
+
+
+
+
+
+ primaries to be +ve</tt><tt><br>
+ </tt><tt>&nbsp;</tt><tt><small><small><a
+ href="file:///D:/src/argyll/doc/colprof.html#f">-f [<i>illum</i>]</a>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Use Fluorescent
+ Whitening Agent compensation [opt. simulated inst. illum.:<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+ M0, M1, M2, </small></small></tt><tt><small><small><small>A,
+ C, D50 (def.), D50M2, D65, F5, F8, F10 or file.sp ]</small></small></small></tt><tt><br>
+ </tt><tt><small><small><small><small>&nbsp;<a
+ href="file:///D:/src/argyll/doc/colprof.html#i">-i <i>illum</i></a>&nbsp;&nbsp;
+
+ &nbsp; &nbsp; &nbsp; &nbsp; Choose illuminant for
+ computation of CIE XYZ from spectral data &amp; FWA:<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+&nbsp;
+A,
+C,
+D50
+(def.),
+D50M2,
+
+ D65, F5, F8, F10 or file.sp</small></small></small><br>
+ &nbsp;<a href="#o">-o <i>observ</i></a>&nbsp; &nbsp; &nbsp;
+ &nbsp; &nbsp; Choose CIE Observer for spectral data:<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
+
+
+
+
+
+
+
+ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 1931_2 </small></tt><tt><small>(def.)</small></tt><tt><small>,
+ 1964_10, S&amp;B 1955_2, shaw, J&amp;V 1978_2<br>
+ &nbsp;<a href="#r">-r avgdev</a> &nbsp; &nbsp; &nbsp;
+ &nbsp;&nbsp; Average deviation of device+instrument readings as
+ a percentage (default 0.5%)<br>
+ &nbsp;<a href="#s">-s src.icc</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+Apply
+gamut
+mapping
+to
+output
+profile
+perceptual
+B2A
+table
+for
+
+
+
+
+
+
+
+
+
+
+
+ given source<br>
+ &nbsp;<a href="#S">-S src.icc</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
+
+
+
+
+
+
+
+ Apply gamut mapping to output profile perceptual and saturation
+ B2A table<br>
+ &nbsp;<a href="#nP">-nP</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
+
+
+
+
+
+
+
+ Use colormetric source gamut to make output profile perceptual
+ table<br>
+ &nbsp;<a href="#nS">-nS</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
+
+
+
+
+
+
+
+ Use colormetric source gamut to make output profile saturation
+ table<br>
+ &nbsp;<a href="#g">-g src.gam</a>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Use source image
+ gamut as well for output profile gamut mapping<br>
+ &nbsp;<a href="#p">-p aprof.icm,...</a> &nbsp; Incorporate
+ abstract profile(s) into output tables<br>
+ &nbsp;<a href="#t">-t intent</a>&nbsp;
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Override gamut
+ mapping intent for output profile perceptual table:<br>
+ &nbsp;<a href="#T">-T intent</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
+
+
+
+
+
+
+
+ Override gamut mapping intent for output profile saturation
+ table:<br>
+ </small></tt><tt><small> &nbsp; &nbsp; &nbsp;
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+ a - Absolute Colorimetric (in Jab) [ICC Absolute Colorimetric]<br>
+ &nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp;&nbsp;
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; aw - Absolute Colorimetric
+ (in Jab) with scaling to fit white point<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;
+ &nbsp;&nbsp; &nbsp;&nbsp; aa - Absolute Appearance<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp;&nbsp;
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; r - White Point Matched
+ Appearance [ICC Relative Colorimetric]<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+ &nbsp; &nbsp; &nbsp; la - Luminance matched Appearance<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp;&nbsp;
+ &nbsp;&nbsp;&nbsp;&nbsp; p - Perceptual (Preferred) [ICC
+ Perceptual]<br>
+ </small></tt><tt><small>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
+
+
+
+
+
+
+
+ pa - Perceptual Appearance</small></tt><tt><br>
+ </tt><tt> </tt><tt><small>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
+
+
+
+
+
+
+
+ &nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; ms - Saturation<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;
+ &nbsp;&nbsp; &nbsp;&nbsp;&nbsp; s - Enhanced Saturation [ICC
+ Saturation]<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;
+ &nbsp;&nbsp; &nbsp; al - Absolute Colorimetric (Lab)</small></tt><tt><small><br>
+ &nbsp;<a href="#c">-c viewcond</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
+
+
+
+
+
+
+
+ set input viewing conditions for output profile CIECAM02 gamut
+ mapping,<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
+
+
+
+
+
+
+
+ either an enumerated choice, or a parameter<br>
+ &nbsp;<a href="#d">-d viewcond</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
+
+
+
+
+
+
+
+ set output viewing conditions for output profile CIECAM02, gamut
+ mapping<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
+
+
+
+
+
+
+
+ either an enumerated choice, or a parameter:value change<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
+
+
+
+
+
+
+
+ Also sets out of gamut clipping CAM space.<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
+
+
+
+
+
+
+
+ Enumerated Viewing Conditions:<br>
+ </small></tt><tt><small>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
+ &nbsp;&nbsp; &nbsp; pp - Practical Reflection Print (ISO-3664
+ P2)<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp;
+ &nbsp;&nbsp; &nbsp; pe - Print evaluation environment (CIE
+ 116-1995)<br>
+ </small></tt><tt><small>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+ &nbsp; &nbsp; &nbsp;&nbsp; &nbsp; pc - Critical print evaluation
+ environment (ISO-3664 P1)</small></tt><tt><br>
+ </tt><tt> </tt><tt><small>&nbsp;&nbsp; &nbsp; &nbsp;&nbsp;
+ &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; mt - Monitor in typical work
+ environment<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
+ &nbsp; mb - Monitor in bright work environment<br>
+ &nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
+ &nbsp;&nbsp; md - Monitor in darkened work environment<br>
+ &nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; &nbsp;
+ &nbsp; jm - Projector in dim environment<br>
+ &nbsp;&nbsp;&nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp;
+ &nbsp;&nbsp;&nbsp; jd - Projector in dark environment<br>
+ &nbsp;&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; &nbsp;
+ &nbsp;&nbsp;&nbsp; pcd - Photo CD - original scene outdoors<br>
+ &nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;
+ &nbsp;&nbsp;&nbsp; ob - Original scene - Bright Outdoors<br>
+ &nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
+ &nbsp;&nbsp; cx - Cut Sheet Transparencies on a viewing box</small></tt><tt><small><br>
+ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
+ &nbsp; &nbsp;&nbsp;&nbsp; s:surround n = auto, a = average, m =
+ dim, d = dark,<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
+
+
+
+
+
+
+
+ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;&nbsp;&nbsp;
+ &nbsp;&nbsp; c = transparency (default average)<br>
+ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+ w:X:Y:Z&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Adapted white point
+ as XYZ (default media white)<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp;
+ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
+ w:x:y&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Adapted
+ white point as x, y<br>
+ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; a:adaptation&nbsp; Adaptatation
+ luminance in cd.m^2 (default 50.0)<br>
+ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; b:background&nbsp; Background %
+ of image luminance (default 20)<br>
+ &nbsp;&nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;
+ &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; l:scenewhite&nbsp;
+ Scene white in cd.m^2 if surround = auto (default 250)<br>
+ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+ f:flare&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Flare light % of
+ image luminance (default 1)<br>
+ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+ f:X:Y:Z&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Flare color as XYZ
+ (default media white)<br>
+ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+ f:x:y&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Flare
+ color as x, y<br>
+ &nbsp;<a href="#P">-P</a>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
+
+
+
+
+
+
+
+ Create gamut gammap_p.wrl and gammap_s.wrl diagostics<br>
+ </small></tt><tt><small>&nbsp;<a href="#O">-O outputfile</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+Override
+
+
+
+
+
+
+
+
+
+
+
+ the default output filename &amp; extension.</small></tt><tt><br>
+ </tt><tt> </tt><tt><small>&nbsp;<a href="#p1"><i>inoutfile</i></a>
+ &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Base name for
+ input.ti3/output.icc file</small></tt><br>
+ <h3>Options<br>
+ </h3>
+ <b><a name="v"></a>-v</b>&nbsp; Turn on verbose mode. Gives progress
+ information as the profile is created. Since colprof can take a long
+ time to generate, this is often useful to monitor progress. If used
+ in combination with the <b>-y</b> flag, the error of each test
+ point to the resulting profile will be printed out.<br>
+ <br>
+ <a name="A"></a>The <b>-A</b> parameter allows setting of the
+ device manufacturer description tag. The parameter should be a
+ string that identifies the manufacturer of the device being
+ profiled. With most command line shells, it will be necessary to
+ enclose the parameter with double quotes, so that spaces and other
+ special characters are included in the parameter, and not mistaken
+ for the start of another flag, or as a final command line
+ parameters. By default no manufacturer description string tag will
+ be generated for the profile.<br>
+ <br>
+ <a name="M"></a>The <b>-M</b> parameter allows setting of the
+ device mode description tag. The parameter should be a string that
+ identifies the particular model of device being profiled. With most
+ command line shells, it will be necessary to enclose the parameter
+ with double quotes, so that spaces and other special characters are
+ included in the parameter, and not mistaken for the start of another
+ flag, or as a final command line parameters. By default no model
+ description string tag will be generated for the profile.<br>
+ <br>
+ <a name="D"></a>The <b>-D</b> parameter allows setting of the
+ profile description tag. The parameter should be a string that
+ describes the device and profile. On many systems, it will be this
+ string that will be used to identify the profile from a list of
+ possible profiles. With most command line shells, it will be
+ necessary to enclose the parameter with double quotes, so that
+ spaces and other special characters are included in the parameter,
+ and not mistaken for the start of another flag, or as a final
+ command line parameter. Many programs that deal with ICC profiles
+ use the description tag to identify a profile, rather than the
+ profile filename, so using a descriptive string is important in
+ being able to find a profile. By default, the base name of the
+ resulting profile will be used as the description.<br>
+ <br>
+ <a name="C"></a>The <b>-C</b> parameter allows setting of the
+ profile copyright tag. The parameter should be a string that
+ describes the copyright (if any) claimed on the profile being
+ generated.. With most command line shells, it will be necessary to
+ enclose the parameter with double quotes, so that spaces and other
+ special characters are included in the parameter, and not mistaken
+ for the start of another flag, or as a final command line
+ parameters. By default a generic copyright string will be generated
+ for the profile.<br>
+ <br>
+ <a name="Za"></a>The <b>-Z</b> parameter allows setting of the
+ profile attribute flags. There are four flags: <span
+ style="font-weight: bold;">t</span> to set Transparency, the
+ default being Reflective; <span style="font-weight: bold;">m</span>
+ to set Matte, the default is Glossy; <span style="font-weight:
+ bold;">n</span> to set Negative, the default is Positive; <span
+ style="font-weight: bold;">b</span> to set BlackAndWhite, the
+ default is Color.<br>
+ <br>
+ <a name="Zi"></a>The <b>-Z</b> parameter allows setting of the
+ profile default intent. The default intent can be one of the four
+ standard intents: <span style="font-weight: bold;">p</span> to set
+ Perceptual, <span style="font-weight: bold;">r</span> to set
+ Relative Colorimetric, <span style="font-weight: bold;">s</span> to
+ set Saturation, and <span style="font-weight: bold;">a</span> to
+ set Absolute colorimetric.<br>
+ <br>
+ <a name="q"></a> The <b>-q</b> parameter sets the level of effort
+ and/or detail in the resulting profile. For table based profiles
+ ("cLUT" profiles), it sets the main lookup table size, and hence
+ detail in the resulting profile. For matrix profiles it sets the per
+ channel curve detail level and fitting "effort". It is <span
+ style="text-decoration: underline;">highly recommended</span> that
+ <span style="font-weight: bold;">-qm</span> be used as a starting
+ point, and other settings only tried after this has been evaluated.
+ <span style="font-weight: bold;">NOTE</span> that <span
+ style="font-weight: bold;">-qu</span> is a <span
+ style="text-decoration: underline;">test mode</span>, and
+ shouldn't be used, except to prove that it is not worth using.<br>
+ <br>
+ <a name="b"></a> The <b>-b</b> flag overrides the <b>-q</b>
+ parameter, and sets the lut resolution for the BtoA (inverse) to a
+ low value. The creation of the B2A table is fairly time consuming,
+ and if the profile is only going to be used by <a
+ href="targen.html">targen</a>, or if it will only be used as an
+ input space profile, or if it will only be linked as an output
+ profile using Argyll's <a href="collink.html">collink</a> tool
+ using the <b>-G</b> option (inverse AtoB option), then a high
+ detail BtoA table is not required, and some time and profile space
+ can be saved. If the profile is to be used as an output space
+ profile with another CMS, or is going to be linked using the simple
+ (-s) or mapping mode (-g) options, then a good quality B2A table is
+ needed, and the -b flag should <span style="font-weight: bold;">NOT</span>
+ be set. Optionally, a specific B2A table quality can be set.<br>
+ <br>
+ For input devices,&nbsp; the presence of a B2A table is not
+ mandatory, and it can be omitted entirely from the profile by using
+ <span style="font-weight: bold;">-bn</span>. Note that input
+ profiles and matrix profiles will only contain a colorimetric intent
+ table or matrix.<br>
+ <br>
+ <a name="y"></a> The <b>-y</b> flag does a verification check on
+ the AtoB profile. This is done by comparing what CIE colors the
+ profile predicts for the test chart test patches, and comparing them
+ to the actual values. A summary of the average and maximum Lab delta
+ E's will be printed out if this flag is set. If the <b>-v</b> flag
+ is also set, then information for each patch will also be printed.<br>
+ <br>
+ <a name="ni"></a><a name="np"></a><a name="no"></a>Normally cLUT
+ base profiles are generated with three major elements:- per device
+ channel (shaper) input curves, the multi-dimensional lut table, and
+ per PCS channel (shaper) output curves. The&nbsp; Using the <b>-ni</b>
+ flag disables the creation of the per device channel curves, while
+ using the <b>-no</b> flag disables the creation of the per PCS
+ channel curves.<br>
+ For cLUT based profiles, the input curves that are written to the
+ profile are composed of two components, a shape to best match the
+ detailed shape of the device behavior, and a shape to distribute the
+ input values evenly across the LUT input indexes. The <span
+ style="font-weight: bold;">-no</span> flag disables the former,
+ while the <span style="font-weight: bold;">-np</span> flag disables
+ the latter. <br>
+ <br>
+ <a name="nc"></a><span style="font-weight: bold;">-nc </span>Normally
+the
+
+
+
+
+
+
+
+
+
+
+
+ device and CIE/spectral sample data and calibration curves used to
+ create a profile is stored in the <span style="font-weight: bold;">'targ'</span>
+ text tag in the resulting ICC profile. To suppress this and make the
+ resulting profile smaller, use the <span style="font-weight: bold;">-nc
+
+
+
+
+
+
+
+
+
+
+ </span>flag. <span style="font-weight: bold;">Note</span> that this
+ will then preclude final calibrated device value ink limits from
+ being computed for the resulting profile in subsequent use (ie. <a
+ href="collink.html">collink</a>, <a href="xicclu.html">xicclu</a>
+ etc.).<br>
+ <br>
+ <a name="k"></a> -<b>k</b> parameter sets the target level of black
+ (K) when creating a B2A CMYK output tables. This is often called a
+ black level, a black inking rule, black generation, or under color
+ removal.&nbsp; These set the target black level.<br>
+ <br>
+ &nbsp;Possible arguments to the <b>-k</b> flag are:<br>
+ <br>
+ <b> -kz</b> selects minimum black (0.0)<br>
+ <b> -kh</b> selects a black value of 0.5<br>
+ <b> -kx</b> selects the maximum possible black (1.0)<br>
+ <b> -kr</b> selects a linear black ramp, starting at minimum black
+ for highlight, and maximum black for shadow (equivalent to -kp 0 0 1
+ 1 1). This is the default.<br>
+ <br>
+ <b><a name="kp"></a>-k p stle stpo enpo enle shape</b>&nbsp; allows
+ an arbitrary black value ramp to be defined, consisting of a
+ starting value (stle) for highlights, a breakpoint L value (stpo)
+ where it starts to transition to the shadow level, an end breakpoint
+ L (enpo) where it flattens out again, and the finishing black level
+ (enle) for the shadows. There is also a curve parameter, that
+ modifies the transition from stle to enle to either be concave
+ (ie.&nbsp; the transition starts gradually and and finished more
+ abruptly) using values 0.0-1.0, with 0.0 being most concave, or
+ convex (the transition starts more abruptly but finishes gradually),
+ using values 1.0-2.0, with 2.0 being the most convex.<br>
+ <br>
+ Typical black value generation curve with parameters something like:
+ -kp 0 .1 .9 1 .5<br>
+ <br>
+ <tt> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1.0 K &nbsp; |
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;enpo<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
+
+
+
+
+
+
+
+ |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp; &nbsp;
+ &nbsp;_______&nbsp; enle<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
+
+
+
+
+
+
+
+ |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp;/<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
+
+
+
+
+
+
+
+ |&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp; &nbsp; /<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
+
+
+
+
+
+
+
+ |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp;/<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
+
+
+
+
+
+
+
+ |&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; /<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+ stle&nbsp; | ------/<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;
+ &nbsp;&nbsp;&nbsp;&nbsp; +-------------------<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0.0 K&nbsp;
+ 0.0&nbsp;&nbsp;&nbsp;
+ stpo&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1.0<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+White&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
+
+
+
+
+
+
+
+ Black<br>
+ </tt> <br>
+ For minimum sensitivity of printed output to the lighting spectrum,
+ it currently seems best to use the maximum possible black, but other
+ black generation levels (ie. 0.3 to 0.5) may well be preferred if
+ one wants to minimize the noisy appearance of black on an inkjet
+ device, or if the banding behaviour or other rendering flaws of the
+ printer is to be minimized. <br>
+ <br>
+ Note that the black level curve is applied throughout the gamut,
+ resulting in GCR (Grey Component Replacement). There is no facility
+ to restrict black to just neutral colors, hence UCR is not currently
+ supported.<br>
+ &nbsp; <br>
+ The <a href="xicclu.html">xicclu</a> tool can be used to plot out
+ the resulting black level for a given set of parameters, by using
+ the <a href="xicclu.html#g">-g</a> flag of a profile already
+ created from the same .ti3 file.<br>
+ <br>
+ <a name="K"></a> <span style="font-weight: bold;">-K parameters.</span>
+ Any of the <span style="font-weight: bold;">-k</span> options above
+ can use the <span style="font-weight: bold;">-K</span> version, in
+ which rather than a black value target being defined by the inking
+ rule, a black <span style="text-decoration: underline;">locus</span>
+ target is defined. For each lookup, the minimum possible black level
+ and the maximum possible black level is determined, the former
+ corresponding to a locus target of 0, and the latter corresponding
+ to a locus target of 1. For instance, at the white point, no black
+ will be used in the output, even if the black locus specifies a
+ maximum (since the maximum amount of black that can be used to print
+ white is actually zero). Similarly, at the black point, black may
+ well be used, even if the black locus specifies zero black (since a
+ certain amount of black is needed to achieve the desired density of
+ color). <br>
+ <tt> </tt><br>
+ <a name="l"></a> The <b>-l</b> <i>tlimit</i> parameter sets the
+ total ink limit (TAC, Total Area Coverage) for the CMYK separation,
+ as a total percentage from 0% to 400%, and overrides any ink limit
+ specified in the .ti3 file. The limit value should generally be set
+ a little below the value used in the test chart generation, to avoid
+ the very edges of the gamut. If the test chart ink limit has been
+ chosen to be a little beyond an acceptable level, then this number
+ should be the acceptable level. Although limits can be set below
+ 200%, this will generally restrict the color gamut noticeably, as
+ fully saturated secondary colors will not be reproduced. Values are
+ between 220% and 300% for typical printing devices. Ink limits will
+ be in the final calibrated device values if the <span
+ style="font-weight: bold;">.ti3</span> includes the calibration
+ table.<br>
+ <br>
+ <a name="L"></a> The <b>-L</b> <i>klimit</i> parameter sets the
+ black channel ink limit for the CMYK separation, as a total
+ percentage from 0% to 100%. For printing press like devices, this
+ can be used to prevent the black channel screening pattern "filling
+ in". Typical values might be from 95% to 99%. Note that with the
+ current implementation this can slow down the creation of the
+ profile quite noticeably, so do not use <span style="font-weight:
+ bold;">-L</span> unless you really need to. Ink limits will be in
+ the final calibrated device values if the <span style="font-weight:
+ bold;">.ti3</span> includes the calibration table.<br>
+ <br>
+ <a name="a"></a> The <b>-a</b> parameter allows choosing an
+ alternate profile type. <br>
+ <br>
+ By default (equivalent to <b>-al</b>) profile creates a <span
+ style="font-weight: bold;">cLUT</span> based table profile with a
+ PCS (Profile Connection Space) of L*a*b*, which generally gives the
+ most accurate results, and allows for the four different rendering
+ intents that ICC profiles can support.<br>
+ <br>
+ A cLUT base table profile using a PCS of XYZ can be created if <b>-ax</b>
+ is used, and this may have the advantage of better accuracy for
+ additive type devices (displays, scanners, cameras etc.), may avoid
+ clipping for displays with a colorant chromaticity that can't be
+ encoded in L*a*b* PCS space, and may give a more accurate white
+ point for input devices by avoiding clipping of values above the
+ white point that can occur in L*a*b* based cLUT input profiles. By
+ default cLUT XYZ PCS Display profiles will also have a set of dummy
+ matrix tags included in them, for better compatibility with other
+ systems. The dummy matrix deliberately interchanges Red, Green and
+ Blue channels, so that it is obvious if the cLUT tables are not
+ being used. If it is important for both the cLUT and matrix be
+ accurate, use <span style="font-weight: bold;">-aX</span>, which
+ will create shaper/matrix tags.<br>
+ <br>
+ For RGB input or display profiles, a simpler type of profile using
+ either a gamma curves or a general shaper curves, combined with a
+ matrix can be created, although such a profile cannot support
+ perceptual or saturation intents. Gamma curve and matrix profiles
+ can be created by specifying <b>-ag</b> or <b>-aG</b>, the former
+ creating three independent gamma curves, one for each device
+ channel, and the latter creating one common curve for all the device
+ channels. The latter may be needed with certain applications that
+ will not accept different gamma curves for each channel. General
+ shaper curve and matrix profiles (which are superior to gamma curve
+ profiles) can be created by specifying <b>-as</b> or <b>-aS</b>,
+ the former creating three independent shaper curves, one for each
+ device channel, and the latter creating one common curve for all the
+ device channels. The latter may be needed with certain applications
+ that will not accept different shaper curves for each channel.<br>
+ <br>
+ The <span style="font-weight: bold;">-am</span> option will create
+ a matrix profile with linear (i.e. gamma = 1.0) curves. This may be
+ useful in creating a profile for a device that is known to have a
+ perfectly linear response, such as a camera in RAW mode.<br>
+ <br>
+ <a name="u"></a> <span style="font-weight: bold;">-u:</span> Input
+ profiles will normally be created such that the white patch of the
+ test chart will be mapped to perfect white when used with any of the
+ non-absolute colorimetric intents. This is the expected behavior for
+ input profiles. If such a profile is then used with a sample that
+ has a lighter color than the original test chart, then a cLUT
+ profile will clip the value, since it cannot be represented in the
+ lut table. Using the <b>-u</b> flag causes the media white point to
+ be automatically scaled (using the same type of scaling as the <span
+ style="font-weight: bold;">-U scale</span> option) to avoid
+ clipping values up to full device white. This flag can be useful
+ when an input profile is needed for using a scanner as a "poor mans"
+ colorimeter, or if the white point of the test chart doesn't
+ represent the white points of media that will be used in practice,
+ and that white point adjustment will be done individually in some
+ downstream application.<br>
+ <br>
+ <a name="uc"></a> <span style="font-weight: bold;">-uc:</span> For
+ input profiles it is sometimes desirable that any highlights
+ brighter than the white point, map exactly to white, and this option
+ post processes the cLUT entries to ensure this is the case. Note
+ that due to the finite nature of the cLUT grid, this may affect the
+ accuracy of colors near the light surface of the device gamut.<br>
+ <br>
+ <a name="U"></a><span style="font-weight: bold;"> -U <span
+ style="font-style: italic;">scale</span>:</span> Input profiles
+ will normally be created such that the white patch of the test chart
+ will be mapped to perfect white when used with any of the
+ non-absolute colorimetric intents. This is the expected behavior for
+ input profiles. Sometimes the test chart white is not quite the same
+ as the media being converted through the input profile, and it may
+ be desirable in these cases to adjust the input profile white point
+ to compensate for this. This can happen in the case of a camera
+ profile, where the test chart is not perfectly exposed. The <span
+ style="font-weight: bold;">-U</span> parameter allows this. If the
+ media converted is a little darker than the test chart white, then
+ use a scale factor slightly less than 1.0 to make sure that the
+ media white comes out as white on conversion (ie. try 0.9 for
+ instance). If the media is a little lighter than the test chart
+ white and is "blowing out" the highlights, try a value slightly
+ greater than 1.0 (ie. try 1.1 for instance). The <span
+ style="font-weight: bold;">-u</span> option sets the scale
+ automatically to accomodate a perfect white, but <span
+ style="font-weight: bold;">-U scale</span> can be used on top of
+ this automatic scaling.<br>
+ <br>
+ <a name="R"></a><span style="font-weight: bold;"> -</span><span
+ style="font-weight: bold;">R</span><span style="font-weight:
+ bold;">:</span> Normally the white point, black point and primary
+ locations (for matrix profiles) are computed so as to create
+ profiles that best match the sample data provided. Some programs are
+ not happy with the resulting locations if they have negative XYZ
+ values, or if the white point has a Y value &gt; 1. The <span
+ style="font-weight: bold;">-R</span> option restricts the white,
+ black and primary values, so as to work with these programs, but
+ this will reduce the accuracy of the profile.<br>
+ <br>
+ <a name="f"></a> The <b>-f</b> flag enables Fluorescent Whitening
+ Agent (FWA) compensation. This only works if spectral data is
+ available and, the instrument is not UV filtered.&nbsp; FWA
+ compensation adjusts the spectral samples so that they appear to
+ have been measured using an illuminant that has a different level of
+ Ultra Violet to the one the instrument actually used in the
+ measurement. There are two ways this can be used:<br>
+ <br>
+ The first and most common is to use the <b>-f</b> flag with the <b>-i</b>
+ illuminant parameter, to make the color values more accurately
+ reflect their appearance under the viewing illuminant. This will
+ work accurately if you specify the <span style="text-decoration:
+ underline;">actual illuminant spectrum you are using to view the
+ print</span>, using the <span style="font-weight: bold;"><span
+ style="font-weight: bold;">-i</span></span> flag. If you are
+ doing proofing, you need to apply this to <span
+ style="text-decoration: underline;">both your source profile, and
+ your destination profile</span>. Note that it is not sufficient to
+ specify an illuminant with the same white point as the one you are
+ using, you should specify the spectrum of the illuminant you are <span
+ style="text-decoration: underline;">actually using</span> for the
+ proofing, including its <span style="text-decoration: underline;">Ultra
+
+
+
+
+
+
+
+
+
+
+
+ Violet</span> spectral content, otherwise FWA compensation won't
+ work properly. This means you ideally need to measure your
+ illuminant spectrum using an instrument that can measure down to
+ 300nm. Such instruments are not easy to come by. The best
+ alternative is to use the <a href="illumread.html">illumread</a>
+ utility, which uses an indirect means of measuring an illuminant and
+ estimating its UV content. Another alternative is to simply try
+ different illuminant spectra in the <span style="font-weight:
+ bold;">ref </span>directory, and see if one gives you the result
+ you are after, although this will be fairly a tedious approach. The
+ ref/D50_X.X.sp set of illuminant spectra are the D50 spectrum with
+ different levels of U.V. added or subtracted, ref/D50_1.0.sp being
+ the standard D50 illuminant, and may be somewhere to start.<br>
+ &nbsp;[Note: Generally using <span style="font-weight: bold;">-f</span>
+ with the standard (<b>-i) </b>D50 illuminant spectrum will predict
+ that the device will produce bluer output than the default of not
+ FWA compensation. This is because most instruments use an
+ incandescent illuminant (A type illuminant), which has lower
+ relative levels of UV than D50, so the FWA compensation simulates
+ the effect of the greater UV in the D50. Also note that in an
+ absolute colorimetric color transformation, the more a profile
+ predicts the output device will have blue output, the yellower the
+ result will be, as the overall color correction compensates for the
+ blueness. The opposite will happen for an input profile.]<br>
+ <br>
+ The second way of using the <b>-f</b> flag is to provide it with a
+ instrument simulation illuminant spectrum parameter, in addition to
+ the default D50 or <b>-i</b> parameter&nbsp; CIE XYZ&nbsp;
+ calculation illuminant<b></b>. This more complicated scenario
+ simulates the measurement of the spectral reflectance of the samples
+ under a particular instrument illuminant, then computes the CIE XYZ
+ values of that reflectance spectrum under the default D50 or <b>-i</b>
+ parameter illuminant. This is <u>not</u> used to give a more
+ accurate real world result, but to provide simulations of various
+ standardized measurement conditions. For instance, to reproduce ISO
+ 13655:2009 M2 measurement conditions, the <b>-f D50M2</b> could be
+ used (together with the default <b>-i D50</b> setting). There are
+ shortcuts provided for ISO 13655:2009 conditions:<br>
+ <br>
+ &nbsp;&nbsp;&nbsp; <b>-f M0</b>&nbsp;&nbsp;&nbsp;
+ &nbsp;&nbsp;&nbsp; equivalent to<b>&nbsp;&nbsp;&nbsp; -f A</b><br>
+ &nbsp;&nbsp;&nbsp; <b>-f M1</b> &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
+ equivalent to<b>&nbsp;&nbsp;&nbsp; -f D50</b><br>
+ &nbsp;&nbsp;&nbsp; <b>-f M2</b> &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
+ equivalent to<b>&nbsp;&nbsp;&nbsp; -f D50M2</b><b><br>
+ </b><br>
+ &nbsp;Note that using <span style="font-weight: bold;">-f</span> <b>M2</b>
+ gives a result that is comparable to that of a U.V. cut filter
+ instrument. See also the discussion <a href="FWA.html">About
+ Fluorescent Whitening Agent compensation</a>.<br>
+ <br>
+ <a name="i"></a> The <b>-i</b> parameter allows specifying a
+ standard or custom illumination spectrum, applied to spectral .ti3
+ data to compute PCS (Profile Connection Space) tristimulus values. <b>A</b>,
+ <b>D50</b>, <b>D65</b>, <b>F5</b>, <b>F8</b>, <b>F10</b> are a
+ selection of standard illuminant spectrums, with <b>D50</b> being
+ the default. If a filename is specified instead, it will be assumed
+ to be an Argyll specific <a href="File_Formats.html#.sp">.sp</a>
+ custom spectrum file. This only works if spectral data is available.
+ Illuminant details are:<br>
+ <br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A&nbsp;&nbsp; CIE
+ tungsten filament lamp 2848K<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D50 CIE daylight 5000K<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D65 CIE daylight 6500K<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; F5&nbsp; CIE Fluorescent
+ 6350K, CRI 72<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; F8&nbsp; CIE Fluorescent
+ 5000K, CRI 95<br>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; F10 CIE Fluorescent
+ 5000K, CRI 81<br>
+ <br>
+ Custom illuminants are most often used when a&nbsp; viewing booth or
+ other known viewing conditions is going to be used to view results.
+ Other illuminant reference files could be created using a suitable
+ measuring instrument such as a spectrolino, or an eyeone using <a
+ href="spotread.html">spotread</a>, although such instruments do
+ not themselves provide the necessary response down to Ultra Violet
+ that is needed for accurate operation of Fluorescent Whitening Agent
+ compensation. The best way of measuring a custom illuminant is to
+ use <a href="illumread.html">illumread</a>, since it uses a special
+ method to estimate the illuminant UV in a way that complements FWA
+ compensation. (See the discussion above for the <b>-f</b> flag).<br>
+ <br>
+ Note that if an illuminant other than D50 is chosen, the resulting
+ ICC profile will not be standard, and may not work perfectly with
+ other profiles that that use&nbsp; the standard ICC D50 illuminant,
+ particularly if the absolute rendering intent is used. Profiles
+ should generally be linked with other profiles that have the same
+ illuminant and observer.<br>
+ <br>
+ <a name="o"></a> The <b>-o</b> flag allows specifying a tristimulus
+ observer, and is used to compute tristimulus values. The following
+ choices are available:<br>
+ <b>&nbsp; 1931_2</b> selects the standard CIE 1931 2 degree
+ observer. The default.<br>
+ &nbsp; <b>1964_10</b> selects the standard CIE 1964 10 degree
+ observer.<br>
+ &nbsp; <b>1955_2</b> selects the Stiles and Birch 1955 2 degree
+ observer<br>
+ &nbsp; <b>1978_2 </b>selects the Judd and Voss 1978 2 degree
+ observer<br>
+ &nbsp; <b>shaw</b> selects the Shaw and Fairchild 1997 2 degree
+ observer<br>
+ <br>
+ Note that if an observer other than 1931 2 degree is chosen, the
+ resulting ICC profile will not be standard, and cannot be freely
+ interchanged with other profiles that that use the standard 1931 2
+ degree observer. Profiles should only be linked with other profiles
+ that have the same illuminant and observer. The <b>1978_2</b>
+ observer or <span style="font-weight: bold;">shaw</span> observer
+ may give slightly better results than the <b>1931_2</b> observer.<br>
+ <br>
+ <br>
+ <a name="r"></a> The <b>-r</b> parameter specifies the average
+ deviation of device+instrument readings from the perfect, noiseless
+ values as a percentage. Knowing the uncertainty in the reproduction
+ and test patch reading can allow the profiling process to be
+ optimized in determining the behaviour of the underlying system. The
+ lower the uncertainty, the more each individual test reading can be
+ relied on to infer the underlying systems color behaviour at that
+ point in the device space. Conversely, the higher the uncertainty,
+ the less the individual readings can be relied upon, and the more
+ the collective response will have to be used. In effect, the higher
+ the uncertainty, the more the input test patch values will be
+ smoothed in determining the devices response. If the perfect,
+ noiseless test patch values had a uniformly distributed error of +/-
+ 1.0% added to them, then this would be an average deviation of 0.5%.
+ If the perfect, noiseless test patch values had a normally
+ distributed&nbsp; error with a standard deviation of 1% added to
+ them, then this would correspond to an average deviation of 0.564%.
+ For a lower quality instrument (less than say a Gretag Spectrolino
+ or Xrite DTP41), or a more variable device (such as a xerographic
+ print engine, rather than a good quality inkjet), then you might be
+ advised to increase the <span style="font-weight: bold;">-r</span>
+ parameter above its default value (double or perhaps 4x would be
+ good starting values.) <br>
+ <br>
+ <a name="S"></a><a name="s"></a><span style="font-weight: bold;">-s
+ -S&nbsp; </span>In order to generate perceptual and saturation
+ intent B2A tables for output profiles, it is necessary to specify at
+ least one profile to define what source gamut should be used in the
+ source to destination gamut mapping. [For more information on <span
+ style="text-decoration: underline;">why</span> a source gamut is
+ needed, see <a href="iccgamutmapping.html">About ICC profiles and
+ Gamut Mapping</a>] The <b>-S</b> parameter is used to do this,
+ and doing so causes perceptual and saturation tables to be
+ generated. If only a perceptual intent is needed, then the <b>-s</b>
+ flag can be used, and the saturation intent will use the same table
+ as the perceptual intent. Note that a input, output, display or
+ device colororspace profile should be specified, not a non-device
+ colorspace, device link, abstract or named color profile.<br>
+ If no source gamut is specified for a cLUT Display profile, then an
+ ICC Version 2.2.0 profile will be created with only an A2B0 and B2A0
+ tag. If a source gamut is specified, then an ICC Version 2.4.0
+ profile will be created with a full complement of B2A tags to
+ support all intents. The source gamut is created from the
+ corresponding intent table of the provided profile to the output
+ table being created. A TIFF or JPEG file containing an embedded ICC
+ profile may be supplied as the argument.<br>
+ <span style="font-weight: bold;">Note</span> that input profiles and
+ matrix profiles will only contain a colorimetric intent table or
+ matrix, and hence the <span style="font-weight: bold;">-s</span>
+ and <span style="font-weight: bold;">-S</span> option is not
+ relevant.<br>
+ <br>
+ <a name="nP"></a><span style="font-weight: bold;">-nP</span>:
+ Normally when a source profile is provided to define the source
+ gamut for the output profile perceptual table gamut mapping, the
+ perceptual source table is used to determine this gamut. This is
+ because some profile have gamut transformations in their perceptual
+ A2B tables that is not in the colorimetric A2B table, and this needs
+ to be taken into account in creating the perceptual B2A table, so
+ that when the two profiles are linked together with the perceptual
+ intent, the gamut mapping works as intended. The <span
+ style="font-weight: bold;">-nP</span> option causes the source
+ gamut to be taken from the source profile colorimetric table
+ instead, causing the perceptual gamut mapping created for the
+ perceptual table to be from the natural source colorspace gamut to
+ the output space gamut.<br>
+ <br>
+ <a name="nS"></a><span style="font-weight: bold;">-nS</span>:
+ Normally when a source profile is provided to define the source
+ gamut for the output profile saturation table gamut mapping, the
+ saturation source table is used to determine this gamut. This is
+ because some profile have gamut transformations in their saturation
+ A2B tables that is not in the colorimetric A2B table, and this needs
+ to be taken into account in creating the saturation B2A table, so
+ that when the two profiles are linked together with the saturation
+ intent, the gamut mapping works as intended. The <span
+ style="font-weight: bold;">-nS</span> option causes the source
+ gamut to be taken from the source profile colorimetric table
+ instead, causing the saturation gamut mapping created for the
+ saturation table to be from the natural source colorspace gamut to
+ the output space gamut.<small><span style="font-family: monospace;"></span></small><br>
+ <br>
+ <a name="g"></a>The <span style="font-weight: bold;">-g</span> flag
+ and its argument allow the use of a specific source gamut instead of
+ that of the source profile. This is to allow optimizing the gamut
+ mapping to a source gamut of &nbsp;a particular image, which can
+ give slightly better results that gamut mapping from the gamut of
+ the source colorspace. Such a source image gamut can be created
+ using the <a href="tiffgamut.html"> tiffgamut</a> tool. The gamut
+ provided to the <span style="font-weight: bold;">-g</span> <span
+ style="font-weight: bold;"></span> flag should be in the same
+ colorspace that <span style="font-weight: bold;">colprof</span> is
+ using internally to connect the two profiles. For all intents except
+ the last one (no. <span style="font-weight: bold;">7</span>), the
+ space should be Jab appearance space, with the viewing conditions
+ generally being those of the input profile viewing conditions. The
+ input profile will normally be the one used to create a source image
+ gamut using <span style="font-weight: bold;">tiffgamut</span>.<br>
+ <br>
+ <b><a name="p"></a></b>The <b>-p</b> option allows specifying one
+ or more abstract profiles that will be applied to the output tables,
+ after any gamut mapping. An abstract profile is a way of specifying
+ a color adjustment in a device independent way. The abstract profile
+ might have been created using one of the <span style="font-weight:
+ bold;">tweak</span> tools, such as <a href="refine.html">refine</a>.<br>
+ If a single abstract profile is specified, then it will be applied
+ to all the output tables (colorimetric, perceptual and saturation).
+ To specify different abstract profiles for each output table, use a
+ contiguous comma separated list of filenames. Omit a filename
+ between the commas if no abstract profile is to be applied to a
+ table. For instance: -<span style="font-weight: bold;">p
+ colabst.icm,percabst.icm,satabst.icm</span> for three different
+ abstract transforms, or: <span style="font-weight: bold;">-p
+ ,percabst.icm,</span> for just a perceptual table abstract
+ transform.<br>
+ <br>
+ One strategy for getting the best perceptual results with output
+ profile when using ICC profiles with systems that don't accept
+ device link profiles, is as follows: Specify a gamut mapping profile
+ of opposite type to the type of device being profiled, and when
+ linking, use the relative colorimetric intent if the two profiles
+ are of the same type, and perceptual intent if the two profiles are
+ of the opposite type. For instance, if you are creating a CMYK
+ output profile, specify an RGB profile for the <b>-s</b> or <b>-S</b>
+ parameter. If linking that profile with a CMYK source profile, use
+ relative colorimetric intent, or if linking with an RGB profile, use
+ the perceptual intent. Conversely, if creating an RGB output
+ profile, specify a CMYK profile for the <b>-s</b> or <b>-S</b>
+ parameter, and if linking that profile with an RGB source profile,
+ use relative colorimetric intent, or if linking with a CMYK profile,
+ use the perceptual intent.<br>
+ <br>
+ (Note that the perceptual and saturation table gamut mapping doesn't
+ make any allowance for the application of the abstract profile. This
+ is a bug.)<br>
+ <br>
+ <a name="t"></a><a name="T"></a><span style="font-weight: bold;"></span><span
+ style="font-weight: bold;"></span>Normally, the gamut mapping used
+ in creating the perceptual and saturation intent tables for output
+ profiles is set to perceptual and saturation gamut mapping (as would
+ be expected), but it is possible to override this default selection
+ for each intent using the <b>-t</b> and <b>-T</b> flags. The <b>-t</b>
+ flag can be used to set the gamut mapping for the perceptual table,
+ and the <b>-T</b> flag can be used to set the gamut mapping for the
+ saturation table. A more detailed description of the different
+ intents is given in <a href="collink.html#i">collink</a>. Note that
+ selecting any of the absolute intents will probably not function as
+ expected, since the perceptual and saturation tables are inherently
+ relative colorimetric in nature.<br>
+ <br>
+ <a name="c"></a><b><a name="d"></a></b>Since appearance space is
+ used in the gamut mapping (just as it is in <a href="collink.html">
+ collink</a>), the viewing conditions for the source and
+ destination colorspaces should really be specified. The source
+ colorspace is the profile specified with the <b>-s</b> or <b>-S</b>
+ flag, and the destination is the profile being created. The <b>-c</b>
+ and <b>-d</b> options allow specification of their respective,
+ associated viewing conditions. The viewing condition information is
+ used to map the profile PCS (Profile Connection Space, which us
+ either XYZ or L*a*b*) color into appearance space (CIECAM02), which
+ is a better colorspace to do gamut mapping in. The viewing
+ conditions allow the conversion into appearance space to take
+ account of how color will be seen under particular viewing
+ conditions.<br>
+ <br>
+ Viewing conditions can be specified in two basic ways. One is to
+ select from the list of "pre canned", enumerated viewing conditions,
+ choosing one that is closest to the conditions that are appropriate
+ for the media type and situation. Alternatively, the viewing
+ conditions parameters can be specified individually. If both methods
+ are used, them the chosen enumerated condition will be used as a
+ base, and its parameters will then be individually overridden.<br>
+ <br>
+ Appearance space is also used to provide a space to map any
+ remaining out of gamut colors (after a possible gamut mapping has
+ been applied) into the device gamut. <br>
+ <br>
+ <b><a name="P"></a></b>The <b>-P</b> option causes diagnostic 3D <a
+ href="File_Formats.html#VRML">VRML</a> plots to be created that
+ illustrate the gamut mappings generated for the perceptual and
+ saturation intent tables.<br>
+ <br>
+ <a name="O"></a>The <span style="font-weight: bold;">-O</span>
+ parameter allows the output file name &amp; extension to be
+ specified independently of the final parameter basename. Note that
+ the full filename must be specified, including the extension.<span
+ style="font-weight: bold;"></span><br>
+ <br>
+ <a name="p1"></a> The final parameter is the file base name for the
+ <a href="File_Formats.html#.ti3">.ti3</a> input test point data, and
+ the resulting <a href="File_Formats.html#ICC">ICC</a> output
+ profile (.icm extension on the MSWindows platform, .icc on Apple or
+ Unix platforms). The <span style="font-weight: bold;">-O</span>
+ parameter will override this default.
+ <h3>Discussion</h3>
+ Note that monochrome profiling isn't currently supported. It may be
+ supported sometime in the future.<br>
+ <br>
+ If the <b>-v</b> flag is used (verbose), then at the end of
+ creating a profile, the maximum and average fit error of the input
+ points to the resulting profile will be reported. This is a good
+ guide as to whether things have gone smoothly in creating a profile.
+ Depending on the type of device, and the consistency of the
+ readings, average errors of 5 or less, and maximum errors of 15 or
+ less would normally be expected. If errors are grossly higher than
+ this, then this is an indication that something is seriously wrong
+ with the device testing, or profile creation.<br>
+ <br>
+ Given a .ti3 file from a display device that contains calibration
+ curves (generated by <a href="dispcal.html">dispcal</a>, passed
+ through <a href="dispread.html">dispread</a>) and the calibration
+ indicates that the VideoLUTs are accessible for the device, then <span
+ style="font-weight: bold;">colprof</span> will convert the
+ calibration into a <span style="font-weight: bold;">vcgt</span> tag
+ in the resulting profile so that the operating system tools can
+ configure the display hardware appropriately, whenever the profile
+ is used. If the VideoLUTs are not marked as being accessible, <span
+ style="font-weight: bold;">colprof</span> will do nothing with the
+ calibration curves. In this case, to apply calibration, the curves
+ have to be incorporated in the subsequent workflow, either by
+ incorporating them into the profile using <a
+ href="applycal.html#p1">applycal</a>, or including them after the
+ profile in a <a href="cctiff.html#p2">cctiff</a> profile chain.<br>
+ <br>
+ Given a .ti3 file from a print device that contains the per-channel
+ calibration information (generated by <a href="printcal.html">printcal</a>,
+ passed through <a href="printtarg.html">printtarg</a> and <a
+ href="chartread.html">chartread</a>), <span style="font-weight:
+ bold;">colprof</span> will save this along with the .ti3 file in
+ the <span style="font-weight: bold;">'targ'</span> text tag in the
+ profile, <span style="font-weight: bold;"></span> so that
+ subsequent evaluation of ink limits can compute the final calibrated
+ device values.<br>
+ <br>
+ <br>
+ <br>
+ <br>
+ <br>
+ <br>
+ <br>
+ <br>
+ <br>
+ <br>
+ <br>
+ <br>
+ <br>
+ <br>
+ <br>
+ <br>
+ </body>
+</html>