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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>collink</title>
+ <meta http-equiv="content-type" content="text/html;
+ charset=ISO-8859-1">
+ <meta name="author" content="Graeme Gill">
+ </head>
+ <body>
+ <h2><b>link/collink</b></h2>
+ <h3>Summary</h3>
+ Link two ICC device profiles to create an ICC device link profile.<br>
+ <br>
+ <b> collink</b> takes two device ICC profiles, and links them
+ together, either in a simple fashion using the standard ICC forward
+ and reverse tables of the specified intent, or using color
+ appearance space and true gamut mapping, together with possibly
+ inverting the forward profile,&nbsp; to allow black ink regeneration
+ or to retain the source black characteristic from the source
+ profile.<br>
+ <h3>Usage Summary</h3>
+ <small><span style="font-family: monospace;">collink [-options] <span
+ style="font-style: italic;">srcprofile dstprofile
+ linkedprofile</span></span><br style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#v">-v</a><span
+ style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+ Verbose<br>
+ </span></small><small><span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#A">-A "manufacturer"</a><span
+ style="font-family: monospace;">&nbsp; Set the manufacturer
+ description string</span><br style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#M">-M "model"</a><span
+ style="font-family: monospace;">
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Set the model
+ description string</span><br style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#D">-D "description"</a><span
+ style="font-family: monospace;">&nbsp;&nbsp; Set the profile
+ Description string&nbsp; (Default "</span><span
+ style="font-style: italic; font-family: monospace;">inoutfile</span><span
+ style="font-family: monospace;">")</span><br style="font-family:
+ monospace;">
+ <span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#C">-C "copyright"</a><span
+ style="font-family: monospace;"> &nbsp;&nbsp;&nbsp; Set the
+ copyright string</span></small><br style="font-family:
+ monospace;">
+ <small><span style="font-family: monospace;"></span><span
+ style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#V">-V</a><span
+ style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+Verify
+existing
+
+
+ profile, rather than link (Debug option)</span><br
+ style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#q">-q lmhu</a><span
+ style="font-family: monospace;"> &nbsp;&nbsp; &nbsp;
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Quality - Low, Medium (def),
+ High, Ultra</span><br style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#r">-r <i>res</i></a><span
+ style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+Override
+clut
+
+
+ res. set by -q</span><br style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#n">-n</a><span
+ style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+Don't
+preserve
+
+
+ device curves in result</span><br style="font-family:
+ monospace;">
+ <span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#f">-f</a><span
+ style="font-family: monospace;">
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Special :- Force neutral colors
+ to be K only output.<br>
+ </span></small><small><span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#fk">-fk</a><span
+ style="font-family: monospace;">
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+ &nbsp;&nbsp;&nbsp;&nbsp; Special :- Force K only neutral colors
+ to be K only output<br>
+ </span></small><small><span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#fcmy">-fcmy</a><span
+ style="font-family: monospace;">
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+ &nbsp;&nbsp; Special :- Force 100% C,M or Y only to stay pure</span></small><br
+ style="font-family: monospace;">
+ <small><span style="font-family: monospace;"></span><span
+ style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#F">-F</a><span
+ style="font-family: monospace;">
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Special :- Force all colors to be
+ K only output.</span><br style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#p">-p aprof.icm</a><span
+ style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+Include
+
+
+ abstract profile in link</span><br style="font-family:
+ monospace;">
+ <span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#s">-s</a><span
+ style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+Simple
+Mode
+
+
+ (default)</span><br style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#g">-g [src.gam]</a><span
+ style="font-family: monospace;">&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;
+ Gamut Mapping Mode [optional source image gamut]</span><br
+ style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#G">-G [src.gam]</a><span
+ style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+Gamut
+
+
+ Mapping Mode using inverse outprofile A2B [optional source
+ gamut]</span><br style="font-family: monospace;">
+ <br style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp; &nbsp;&nbsp; </span><u
+ style="font-family: monospace;">Simple Mode Options:</u><br
+ style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#si">-i <i>in_intent</i></a><span
+ style="font-family: monospace;">&nbsp; &nbsp;&nbsp;&nbsp; p =
+ perceptual, r = relative colorimetric,</span><br
+ style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+&nbsp;&nbsp;&nbsp;
+s
+
+
+ = saturation, a = absolute colorimetric</span><br
+ style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#so">-o </a><i
+ style="font-family: monospace;"><a href="#so">out_intent</a> </i><span
+ style="font-family: monospace;">&nbsp;&nbsp;&nbsp; p =
+ perceptual, r = relative colorimetric,</span><br
+ style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+&nbsp;&nbsp;&nbsp;
+s
+
+
+ = saturation, a = absolute colorimetric</span><br
+ style="font-family: monospace;">
+ <br style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp; &nbsp;&nbsp; </span><u
+ style="font-family: monospace;">Mapping Mode Options:</u><br
+ style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#i">-i <i>intent</i></a><span
+ style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+ set linking intent from the following choice:</span><br
+ style="font-family: monospace;">
+ <span style="font-family: monospace;">&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;
+aw
+-
+
+
+ Absolute Colorimetric (in Jab) with scaling to fit white point<br
+ style="font-family: monospace;">
+ </span><span style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+aa
+-
+
+
+ Absolute Appearance</span><br style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+r
+-
+
+
+ White Point Matched Appearance [ICC Relative Colorimetric]</span><br
+ style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+la
+-
+
+
+ Luminance matched Appearance</span><br style="font-family:
+ monospace;">
+ <span style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+p
+-
+
+
+ Perceptual (Preferred) [ICC Perceptual]<br>
+ </span></small><small><span style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+pa
+
+
+ - Perceptual Appearance</span></small><br style="font-family:
+ monospace;">
+ <small><span style="font-family: monospace;"></span><span
+ style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+ms
+-
+
+
+ Saturation</span><br style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+s
+-
+
+
+ Enhanced Saturation [ICC Saturation]</span><br
+ style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+al
+-
+
+
+ Absolute Colorimetric (Lab)</span><span style="font-family:
+ monospace;"></span><br style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#w">-w [J,a,b]</a><span
+ style="font-family: monospace;"> &nbsp;&nbsp;&nbsp; Use forced
+ whitepoint hack [optional color to map the white to]</span><br
+ style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#c">-c <i>viewcond</i></a><span
+ style="font-family: monospace;">&nbsp; &nbsp; set source viewing
+ conditions for CIECAM02,</span><br style="font-family:
+ monospace;">
+ <span style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+&nbsp;&nbsp;
+either
+
+
+ an enumerated choice, or a parameter</span><br
+ style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#d">-d <i>viewcond</i></a><span
+ style="font-family: monospace;">&nbsp; &nbsp; set destination
+ viewing conditions for CIECAM02,</span><br style="font-family:
+ monospace;">
+ <span style="font-family: monospace;">&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>
+ </span></small><small><span style="font-family: monospace;">&nbsp;
+ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; pp - Practical
+ Reflection Print (ISO-3664 P2)</span><br style="font-family:
+ monospace;">
+ <span style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+&nbsp;
+&nbsp;
+
+
+ &nbsp; pe - Print evaluation environment (CIE 116-1995)<br>
+ </span></small><small><span style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+&nbsp;
+&nbsp;
+
+
+ &nbsp; pc - Critical print evaluation environment (ISO-3664 P1)</span></small><small><span
+ style="font-family: monospace;"></span><span style="font-family:
+ monospace;"></span><span style="font-family: monospace;"></span><span
+ style="font-family: monospace;"></span><br style="font-family:
+ monospace;">
+ <span style="font-family: monospace;">&nbsp;&nbsp;
+ &nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; mt - Monitor in
+ typical work environment</span><br style="font-family:
+ monospace;">
+ <span style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+&nbsp;
+&nbsp;
+
+
+ mb - Monitor in bright work environment</span><br
+ style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;&nbsp;&nbsp; &nbsp;
+ &nbsp; &nbsp; &nbsp;&nbsp;&nbsp; md - Monitor in darkened work
+ environment</span><br style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;&nbsp;&nbsp; &nbsp;
+ &nbsp; &nbsp; &nbsp;&nbsp;&nbsp; jm - Projector in dim
+ environment</span><br style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;&nbsp;&nbsp; &nbsp;
+ &nbsp; &nbsp; &nbsp;&nbsp;&nbsp; jd - Projector in dark
+ environment</span><br style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;&nbsp; &nbsp; &nbsp;
+ &nbsp; &nbsp;&nbsp;&nbsp; pcd - Photo CD - original scene
+ outdoors</span><br style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;&nbsp;&nbsp; &nbsp;
+ &nbsp; &nbsp; &nbsp;&nbsp;&nbsp; ob - Original scene - Bright
+ Outdoors</span><br style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;&nbsp;&nbsp; &nbsp;
+ &nbsp; &nbsp; &nbsp;&nbsp;&nbsp; cx - Cut Sheet Transparencies
+ on a viewing box</span><br style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+s:surround
+n
+
+
+ = auto, a = average, m = dim, d = dark,</span><br
+ style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+&nbsp;
+&nbsp;&nbsp;&nbsp;
+
+
+ c = transparency (default average)</span><br style="font-family:
+ monospace;">
+ <span style="font-family: monospace;">&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)</span><br
+ style="font-family: monospace;">
+ <span style="font-family: monospace;">&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</span><br style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+a:adaptation&nbsp;
+Adaptatation
+
+
+ luminance in cd.m^2 (default 50.0)</span><br style="font-family:
+ monospace;">
+ <span style="font-family: monospace;">&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; l:scenewhite&nbsp;
+ Scene white in cd.m^2 if surround = auto (default 250)<br
+ style="font-family: monospace;">
+ </span><span style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+f:flare&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+Flare
+light
+
+
+ % of image luminance (default 1)</span><br style="font-family:
+ monospace;">
+ <span style="font-family: monospace;">&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)</span><br style="font-family:
+ monospace;">
+ <span style="font-family: monospace;">&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</span><br style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#t">-t <i>tlimit</i></a><span
+ style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+set
+source
+
+
+ total ink limit, 0 - 400% (estimate by default)</span><br
+ style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#T">-T <i>klimit</i></a><span
+ style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+set
+source
+
+
+ total ink limit, 0 - 100% (estimate by default)</span><br
+ style="font-family: monospace;">
+ <br style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp; &nbsp; &nbsp;&nbsp; </span><u
+ style="font-family: monospace;">Inverse outprofile A2B Options:</u><br
+ style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#k">-k tezhxr</a><span
+ style="font-family: monospace;">&nbsp;&nbsp;
+ &nbsp;&nbsp;&nbsp;&nbsp; CMYK Black generation</span><br
+ style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+&nbsp;&nbsp;
+t
+
+
+ = transfer K from source to destination, e = retain K of
+ destination B2A table</span><br style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+&nbsp;&nbsp;
+z
+
+
+ = zero K, h = 0.5 K, x = maximum K, r = ramp K (default)</span><br
+ style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#kp">-k p stle stpo enpo
+ enle shape</a><br style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+&nbsp;&nbsp;
+p
+
+
+ = black level generation curve parameters</span><br
+ style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#kq">-k q stle0 stpo0
+ enpo0 enle0 shape0 stle2 stpo2 enpo2 enle2 shape2</a><br
+ style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+&nbsp;&nbsp;
+q
+
+
+ = transfer source K to dual curve limits</span><br
+ style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#K">-K parameters</a><span
+ style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+ Same as -k, but target is K locus rather than K value itself</span><br
+ style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#l">-l <i>tlimit</i></a><span
+ style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+set
+destination
+
+
+ total ink limit, 0 - 400% (estimate by default)</span><br
+ style="font-family: monospace;">
+ <span style="font-family: monospace;">&nbsp;</span><a
+ style="font-family: monospace;" href="#L">-L <i>klimit</i></a><span
+ style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+set
+destination
+
+
+ total ink limit, 0 - 100% (estimate by default)<br>
+ </span></small>&nbsp;&nbsp;<small><span style="font-family:
+ monospace;"><a href="#P">-P</a>
+ &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</span></small><small><br>
+ <br>
+ <span style="font-family: monospace;"></span></small><span
+ style="font-family: monospace;">&nbsp;<span
+ style="text-decoration: underline;"><span style="font-style:
+ italic;"></span></span></span><a href="#p1"><i
+ style="font-family: monospace;">srcprofile</i></a><span
+ style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+source
+ICC
+
+
+ profile. A </span><small><span style="font-family: monospace;">TIFF
+
+
+ or JPEG file with embedded profile may be used here.</span></small><br
+ style="font-family: monospace;">
+ &nbsp; <span style="font-family: monospace;"><span
+ style="text-decoration: underline;"><span style="font-style:
+ italic;"></span></span></span><a href="#p2"><i
+ style="font-family: monospace;">dstprofile</i></a><span
+ style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+destination
+ICC
+
+
+ profile. </span><span style="font-family: monospace;">A </span><small><span
+ style="font-family: monospace;">TIFF or JPEG file with embedded
+ profile may be used here.</span></small><br style="font-family:
+ monospace;">
+ <span style="font-family: monospace;">&nbsp;</span><a href="#p3"><i
+ style="font-family: monospace;">linkedprofile</i></a><span
+ style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+ resulting device link profile</span><br>
+ <h3>Usage Details and Discussion</h3>
+ <b><a name="v"></a> -v</b> Turns on verbose mode. Gives progress
+ information as the profile is created. Since gamut map mode inverse
+ profile linking can take a long time to perform, this is often
+ useful. <br>
+ <br>
+ <a name="A"></a>The <b>-A</b> parameter allows setting of the
+ device manufacturer description tag. This parameter may not be
+ relevant for a link profile, but if used should be a string that
+ identifies the manufacturer of the primary device used in the link.
+ 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. This parameter may not be relevant for
+ a link profile, but if used should be a string that identifies the
+ particular model of primary device used in the link. 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 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>
+ <br>
+ <b><a name="V"></a> -V</b> Verifies an existing profile. This is
+ really a debugging option. It is only useful if all the linking
+ parameters are identical to those used during the creation of the
+ profile being verified.<br>
+ <br>
+ <b><a name="q"></a> -q [lmhu]</b>&nbsp; &nbsp; &nbsp; &nbsp;Quality
+ - Low, Medium (def), High, Ultra<br>
+ <b><a name="r"></a> -r res&nbsp;</b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+&nbsp;
+&nbsp;
+
+
+ &nbsp;Override clut res. set by <b>-q</b><br>
+ <br>
+ This sets the basic quality of the resulting link, by choosing the
+ resolution of various tables in the resulting profile, as well as
+ the resolution of other temporary tables used in creating the link.
+ The <b>-r</b> flag allows overriding the resolution set by the <b>-q</b>
+ option, for the ICC profile CLUT multi-dimensional interpolation
+ table. It is highly recommended 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;">-qu</span> should almost never be used, except to prove
+ that it should almost never be used.<br>
+ <br>
+ <a name="n"></a>Normally the per channel device curves in the source
+ and destination profiles are preserved in the resulting device link
+ profile, but the <b>-n</b> option disables this. This can be useful
+ if the device linearisation curves are inappropriate in nature.<br>
+ <br>
+ <a name="f"></a> The <b>-f</b> option is a special purpose flag
+ useful only for 3 or 4 component (RGB, CMY or CMYK) source to CMYK
+ destination linking, that causes the destination to be <span
+ style="font-weight: bold;">K only</span> for neutral axis input.
+ Neutral axis input is assumed for R=G=B or C=M=Y input values. So as
+ to get a smooth mapping from the source to the K only destination,
+ by default the gamut mapping will be adjusted to target the
+ destination K only black, and Perceptual gamut mapping will be
+ selected along with maximum K inking. If other options are selected
+ that conflict with achieving a smooth mapping, warnings messages
+ will be emitted.<br>
+ <br>
+ <a name="F"></a> The <b>-F</b> option is a special purpose flag
+ useful only mapping to a CMYK destination, that causes the
+ destination to be converted to K only monochrome. So as to get a
+ smooth mapping from the source to the K only destination, by default
+ the gamut mapping will be adjusted to target the destination K only
+ black, and Perceptual gamut mapping will be selected along with
+ maximum K inking. If other options are selected that conflict with
+ achieving a smooth mapping, warnings messages will be emitted.<br>
+ <br>
+ <a name="fk"></a>&nbsp;The <b>-fk</b> option is a special purpose
+ flag useful only for CMYK source to CMYK destination linking, that
+ causes K only source values to map to K only destination values.
+ This is often useful in re-targeting CMYK material while preserving
+ K only text and graphics. So as to get a smooth mapping from the
+ source to the K only destination, by default the gamut mapping will
+ be adjusted to assume K only black source to destination K only
+ black for K only values, and Perceptual gamut mapping will be
+ selected along with a black generation rule (<span
+ style="font-weight: bold;">-kt</span>) that preserves the black
+ level from source to destination. If other options are selected that
+ conflict with achieving a smooth mapping, warnings messages will be
+ emitted.<br>
+ <br>
+ <a name="fcmy"></a>&nbsp;The <b>-fcmy</b> options are special
+ purpose flags useful only for CMY or CMYK source to CMY or CMYK
+ destination linking. The <span style="font-weight: bold;">cmy</span>
+ flags may be used independently or in combination (ie. <span
+ style="font-weight: bold;">-fc, -fm, -fy, -fcm, -fcy, -fmy, -fcmy</span>)
+ or combined with the <span style="font-weight: bold;">-fk</span>
+ option.&nbsp; These flags ensure that the pure 100% primary colorant
+ source values map to 100% pure colorant destination values, and may
+ be useful in some situations where CMYK material is being
+ re-targeted. <span style="font-weight: bold;">Note</span> that
+ forcing the 100% colorant values to map this way largely works
+ against the aims of color management in preserving colors
+ appearance.&nbsp; So as to get a smooth mapping from the source
+ to&nbsp; destination, by default the gamut mapping will a Saturation
+ intent with 100 percept alignment of the selected C, M and/or Y cusp
+ values. A Saturation intent is often what is desired in such CMYK to
+ CMYK re-renderings, as it makes best use of the (usually quite
+ similar sized) destination gamut. If other options are selected that
+ conflict with achieving a smooth mapping, warnings messages will be
+ emitted.<br>
+ <br>
+ <a name="p"></a> The <b>-p</b> option alows specifying an abstract
+ profile be applied between the source and destination profiles. 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>
+ <br>
+ The basic linking style is chosen by using the <b>-s</b> (default),
+ <b>-g</b> or <b>-G</b> flags. The three behaviors are:<br>
+ <br>
+ <a name="s"></a>&nbsp;<b>-s</b>&nbsp;&nbsp; Simple mode. No gamut
+ mapping is performed, the selected intent AtoB and BtoA tables are
+ simply concatenated to create the output link, with the gamut
+ mapping behavior being determined solely by the BtoA table. The -i
+ and -o options allow selection of the source and destination ICC
+ intents. This is typically how other CMS do ICC linking. <a
+ href="#ss">Details</a>.<br>
+ <br>
+ <a name="g"></a> &nbsp;<b>-g</b>&nbsp;&nbsp; Gamut mapping mode. In
+ this mode, the absolute colorimetric AtoB and BtoA tables are used
+ to perform the link, and the intermediate linking color space is
+ (generally) the CIECAM02 Jab appearance space. The source and
+ destination viewing conditions can be selected using the <b>-c</b>
+ and <b>-d</b> options. A gamut mapping is performed between the two
+ spaces, using&nbsp; the intent selected by the <b>-i</b> option.
+ There is an optional argument, which is a source gamut to use
+ 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.
+ More&nbsp; <a href="#gg">details</a> about gamut mapping mode.<br>
+ <br>
+ <a name="G"></a>&nbsp;<b>-G</b>&nbsp; Use the gamut mapped, inverse
+ AtoB table linking method. This is generally the most accurate,
+ smooth and flexible linking method, but takes the longest to
+ perform. The gamut mapping mode&nbsp; (<span style="font-weight:
+ bold;">-g</span>) options <b>-i</b>, <b>-c</b>, <b>-d</b>, <b>-k</b>
+ and <b>-l</b> are effective when this method is selected. There is
+ an optional argument, which is a source gamut to use 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. More <a
+ href="#GG">details</a> about the gamut mapping, inverse AtoB mode.<br>
+ <br>
+ The gamut provided to the <span style="font-weight: bold;">-g</span>
+ or <span style="font-weight: bold;">-G</span> flag should be in the
+ same colorspace that <span style="font-weight: bold;">collink</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 source profile viewing
+ conditions. The source profile will normally be the one used to
+ create a source image gamut using <span style="font-weight: bold;">tiffgamut</span>.<br>
+ &nbsp;<br>
+ <u><a name="ss"></a> Simple mode gamut mapping options:</u><br>
+ <br>
+ <a name="si"></a> &nbsp;&nbsp; &nbsp;&nbsp; <b>-i</b> <i>in_intent</i>&nbsp;
+&nbsp;
+&nbsp;
+
+
+ &nbsp;<b>p</b> = perceptual, <b>r</b> = relative colorimetric,<br>
+ &nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <b>s</b>
+ = saturation, <b>a</b> = absolute colorimetric<br>
+ <a name="so"></a> &nbsp;&nbsp; &nbsp;&nbsp; <b>-o</b> <i>out_intent</i>
+ &nbsp; &nbsp;<b>p</b> = perceptual, <b>r</b> = relative
+ colorimetric,<br>
+ &nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <b>s</b>
+ = saturation, <b>a</b> = absolute colorimetric<br>
+ <br>
+ These two options simply select the appropriate ICC table, according
+ to desired intent. Generally, it is a good idea to use the same
+ intent for both source and destination. Not all ICC profiles support
+ all four intents.<br>
+ <br>
+ <u><a name="gg"></a> Gamut mapping mode options:</u><br>
+ <br>
+ <a name="i"></a> &nbsp;<b>-i</b> <i>intent</i><br>
+ <br>
+ Select the gamut mapping intent. In gamut mapping mode there is only
+ a single overall intent. The intent is selected using the 1 two
+ letter option parameter, the standard ICC profile being a subset of
+ the available selections.<br>
+ <br>
+ <div style="margin-left: 40px;"><a name="ia"></a>The <span
+ style="font-weight: bold;">a</span> intent, Absolute
+ Colorimetric, is intended to reproduce colors exactly,
+ irrespective of the white point of the each medium. This is done
+ using CIECAM02 Jab appearance colorspace by forcing the source and
+ destination to have a common white point (but other aspects of the
+ individual viewing conditions are active), and colors are mapped
+ directly from source to destination, clipping any out of gamut
+ colors to the closest match. This is equivalent to the ICC <span
+ style="font-weight: bold;">Absolute Colorimetric</span> intent,
+ and is often used for proofing purposes. <br>
+ <br>
+ <a name="iaw"></a>The <span style="font-weight: bold;">aw</span>
+ intent, Absolute Colorimetric with scaling to fit white point, is
+ very similar to the <span style="font-weight: bold;">a</span>
+ intent, except that it will scale the source colorspace down in
+ order to make sure that the source white point isn't clipped by
+ the gamut of the destination. This might be used in some print
+ proofing situations where the source white is lightly lighter than
+ the destination white (as an alternative to using the <a
+ href="#w">-w</a> flag), or it may be useful in some soft
+ proofing situations where the differences in white point of the
+ display destination would cause clipping of the source white
+ point.&nbsp; When the <a href="#v">-v</a> flag is on, the scaling
+ factor used will be displayed during execution.<br>
+ <br>
+ <a name="iaa"></a>The <span style="font-weight: bold;">aa</span>
+ intent, Absolute Appearance, simply maps the Jab colors directly
+ from source to destination, clipping any out of gamut colors to
+ the closest match. This attempts to match the exact appearance of
+ colors as closely as possible, but may not exactly map the white
+ point of the source to the destination, depending on how different
+ the viewing conditions are.<br>
+ <br>
+ <a name="ir"></a>The&nbsp;<span style="font-weight: bold;">r</span>
+ intent is like Absolute Appearance mode, but maps the white point
+ from source to destination precisely, and otherwise maps the Jab
+ colors directly from source to destination, clipping any out of
+ gamut colors to the closest match. This is equivalent to the ICC <span
+ style="font-weight: bold;">Relative Colorimetric</span> intent.<br>
+ <br>
+ <a name="ila"></a>The <span style="font-weight: bold;">la</span>
+ intent, Luminance matched appearance, linearly compresses or
+ expands the the luminance axis to match the source to the
+ destination space, while not otherwise altering the gamut,
+ clipping any out of gamut colors to the closest match. This is
+ often useful for appearance based soft proofing.<br>
+ <br>
+ <a name="ip"></a>The&nbsp; <span style="font-weight: bold;">p</span>
+ intent, Perceptual, uses "knee" type 3 Dimensional compression to
+ make the source gamut fit within the destination gamut. As much as
+ possible, clipping is avoided, hues and the overall appearance is
+ maintained. The white point is mapped precisely from source to
+ destination.This is equivalent to the ICC <span
+ style="font-weight: bold;">Perceptual</span> intent.<br>
+ <br>
+ <a name="ipa"></a>The&nbsp; <span style="font-weight: bold;">pa</span>
+ intent, Perceptual Appearance uses "knee" type 3 Dimensional
+ compression to make the source gamut fit within the destination
+ gamut. As much as possible, clipping is avoided, hues and the
+ overall appearance is maintained. The white point is<span
+ style="font-weight: bold;"> not</span> mapped from source to
+ destination, allowing the apperance parameters to alter the
+ chromatic mapping.<br>
+ <br>
+ <a name="ims"></a>The <span style="font-weight: bold;">ms</span>
+ intent, Saturation, uses 3 Dimensional compression and <span
+ style="text-decoration: underline;">expansion</span> to try and
+ make the source gamut exactly match the destination gamut, and
+ also favours higher saturation over hue or lightness preservation.
+ The white point is mapped precisely from source to destination.<br>
+ <br>
+ <a name="is"></a>The <span style="font-weight: bold;"></span><span
+ style="font-weight: bold;">s</span> intent, Enhanced Saturation,
+ uses the same basic gamut mapping as <span style="font-weight:
+ bold;">ms</span>, Saturation, but increases saturation slightly
+ in highly saturated areas of the gamut. This is equivalent to the
+ ICC <span style="font-weight: bold;">Saturation</span> intent.
+ The white point is mapped precisely from source to destination.<br>
+ <br>
+ <a name="ial"></a>The <span style="font-weight: bold;">al</span>
+ intent, Absolute Appearance (Lab), is similar to intent <span
+ style="font-weight: bold;">a</span>, but L*a*b* colorspace is
+ used rather than CIECAM02 Jab appearance space. This often leads
+ to poor reproduction of blue and red hues, but can be useful as a
+ reference mapping.<br>
+ </div>
+ <br>
+ <a name="w"></a> The <b>-w</b> flag forces the white points to be
+ mapped from source to destination, irrespective of the intent
+ chosen. This is useful if absolute intent is being used, and the two
+ media white points should match, but don't quite due to measurement
+ error.<br>
+ The <b>-w</b> flag can optionally be followed by three numbers,
+ that specify a color that white should be mapped to. This will be in
+ the colorspace used during linking (typically Jab space, which has
+ similar characteristics to L*a*b* space). This options can be useful
+ in fine tuning paper emulation in absolute colorimetric mapping
+ mode.<br>
+ <br>
+ <a name="c"></a><a name="d"></a> The <b>-c</b> and <b>-d</b>
+ options allow specification of the viewing conditions for the source
+ and destination colorspaces respectively. 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>
+ 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 in detail 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>
+ <a name="t"></a> The <b>-t</b> <i>tlimit</i> parameter sets the
+ total ink limit (TAC, Total Area Coverage) for a CMYK source
+ profile, as a total percentage from 0% to 400%. This affects the
+ gamut assumed for the source profile. By default, a total ink limit
+ will be estimated from the source profile B2A table.<br>
+ <br>
+ <a name="T"></a> The <b>-T</b> <i>klimit</i> parameter sets the
+ black channel ink limit for a CMYK source profile, as a total
+ percentage from 0% to 100%. This affects the gamut assumed for the
+ source profile. By default, a black ink limit will be estimated from
+ the source profile B2A table.<br>
+ <br>
+ <br>
+ <u> <a name="GG"></a>Inverse outprofile A2B Options:</u><br>
+ <br>
+ When the <b>-G</b> flag is used, the A2B table is inverted "on the
+ fly", allowing various additional choices as to what device values
+ are used to reproduce a particular color. (If the <b>-G</b> flag is
+ not used, then such decisions are encoded in the B2A table in the
+ profile, and cannot be altered during linking).<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>
+ <b> -kz</b> selects minimum black (0.0)<br>
+ <b> -kh</b> selects a black level value of 0.5<br>
+ <b> -kx</b> selects the maximum possible black (1.0)<br>
+ <b> -kr</b> selects a linear level 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>
+ <b>-kt</b>, will preserve the black amount from the source (CMYK)
+ profile to the destination&nbsp; (CMYK) profile as much as possible.
+ This may be most useful in creating a CMYK to CMYK conversion
+ between two different press conditions, while preserving as much as
+ possible the &nbsp;black only use for text etc. in anything
+ converted. Note that if the source black point is darker than the
+ destination, composite black will still be generated for K only
+ input. The <span style="font-weight: bold;">-fk</span> option can
+ be used to avoid this behavior.<br>
+ <b>-ke</b>, will preserve the black amount from the destination
+ profile B2A table (CMYK).<br>
+ <br>
+ <b><a name="kp"></a>-k p stle stpo enpo enle shape</b>&nbsp; allows
+ an arbitrary black locus 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>
+ <br>
+ </tt>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>
+ <br>
+ <b><a name="kq"></a>-k q stle0 stpo0 enpo0 enle0 shape0 stle2 stpo2
+ enpo2 enle2 shape2</b> is a combination of the <b>-kt</b> and <b>-kp</b>
+ functionality, with the black being preserved in CMYK to CMYK
+ linking, with the output black constrained to be between the first
+ and second set of curve parameters.<br>
+ <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 value of 0, and the latter
+ corresponding to a locus target value 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%. This affects the gamut
+ assumed for the destination profile, as well as the ink limit in the
+ generated device link. 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. By default, a
+ total ink limit will be estimated from the destination profile B2A
+ table. The ink limit will be in final calibrated device values if
+ the profile includes calibration information.<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%. This affects the gamut assumed for the
+ source profile, as well as the ink limit in the generated device
+ link. 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%. By default, a black ink limit will be
+ estimated from the source profile B2A table. The ink limit will be
+ in final calibrated device values if the profile includes
+ calibration information.<br>
+ <br>
+ <b><a name="P"></a></b>The <b>-P</b> option causes a diagnostic 3D
+ <a href="File_Formats.html#VRML">VRML</a> plots to be created that
+ illustrate the gamut mapping generated.<br>
+ <br>
+ <a name="p1"></a>The <i><b>inprofile</b></i> argument specifies the
+ source profile. This is the color space/device we are attempting to
+ emulate in the overall conversion. A <small>TIFF or JPEG file with
+ embedded profile may be used here.</small><br>
+ <br>
+ <a name="p2"></a>The<i><b> outprofile</b></i> argument specifies the
+ destination profile. This is the device we are actually displaying
+ on or printing to. A <small>TIFF or JPEG file with embedded profile
+ may be used here.</small><br>
+ <br>
+ <a name="p3"></a>The <i><b>linkedprofile</b></i> argument specifies
+ the resulting device link profile. This profile will contain the
+ color transform from the source space to destination space.<br>
+ <br>
+ For information on typical usage, see the <a href="Scenarios.html">Typical
+
+
+ Usage Scenarios</a> page.<br>
+ <br>
+ <br>
+ <br>
+ <br>
+ <br>
+ <br>
+ <br>
+ <br>
+ <br>
+ <br>
+ </body>
+</html>