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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=windows-1252">
    <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>
    <br>
    <small>The <a href="#O">-O</a> option allows creation of a device
      link that contains just per channel calibration curves.</small>
    <h3>Usage Summary</h3>
    <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><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><br style="font-family: monospace;">
    <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><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><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><br
      style="font-family: monospace;">
    <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>
    <span style="font-family: monospace;"><span style="font-family:
        monospace;">&nbsp;</span><a style="font-family: monospace;"
        href="#a">-a file.cal</a><span style="font-family: monospace;">
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Apply calibration curves</span>
      to link output and append linear<br>
      &nbsp;<a href="#H">-H file.cal</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;


















      Append calibration curves to 3dlut<br>
      &nbsp;<a href="#O">-O file.cal</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
      Use just calibration curves as link and append linear<br
        style="font-family: monospace;">
    </span> <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><span style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
pa










































      - Perceptual Appearance</span><br>
    <tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;




      lp - Luminance Preserving Perceptual</tt><br style="font-family:
      monospace;">
    <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)<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;





































      rl - White Point Matched 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]<br>
      &nbsp;<a href="#b">-b</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;













      Use RGB-&gt;RGB forced black point hack<br style="font-family:
        monospace;">
    </span> <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>
      &nbsp;</span><tt>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; </tt><tt><tt>pc

        - Critical print evaluation environment (ISO-3664 P1)</tt><tt><br>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;





      </tt>pp - Practical Reflection Print (ISO-3664 P2)<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;
      &nbsp; pe - Print evaluation environment (CIE 116-1995)<br>
    </tt><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp;&nbsp;
      &nbsp; pm - Print evaluation with partial Mid-tone adapation</tt><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:imagewhite&nbsp;
      Image white in cd.m^2 if surround = auto (default 250)</span><br
      style="font-family: monospace;">
    <span style="font-family: monospace;"><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 0)<br>
      </span>&nbsp;</span><span style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;


      g:glare&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Glare light % of
      ambient (default 5)</span><br style="font-family: monospace;">
    <span style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;































      g:X:Y:Z&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Glare 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;































      g:x:y&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Glare color
      as x, y</span><br style="font-family: monospace;">
    <tt><span style="font-family: monospace;"><tt><span
            style="font-family: monospace;"><span style="font-family:
              monospace;">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
              h:hkscale&nbsp;&nbsp;&nbsp;&nbsp; Helmholtz-Kohlrausch
              effect scale factor (default 1.0)<br>
            </span>&nbsp;</span><span style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;




            m:mtaf&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Mid-tone
            partial adaptation factor (default 0.0)</span><br
            style="font-family: monospace;">
          <span style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;


            m:X:Y:Z&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Mid-tone
            Adaptation white as XYZ (default D50)</span><br
            style="font-family: monospace;">
          <span style="font-family: monospace;">&nbsp;
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
            m:x:y&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
            Mid-tone Adaptation white as x, y<br>
          </span></tt></span></tt>&nbsp; <span style="font-family:
      monospace;"></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>
      &nbsp;<a href="#3">-3 flag</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;




































      Create "3DLut" output file as well as devlink<br>
      &nbsp;&nbsp;&nbsp;&nbsp;
      e&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;




































      eeColor .txt file</span><br>
    <tt>&nbsp;&nbsp;&nbsp;&nbsp;
      m&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
























      MadVR .3dlut&nbsp;&nbsp; file<br>
      &nbsp;&nbsp;&nbsp;&nbsp;
      c&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;



      IRIDAS .cube file<br>
    </tt> <tt>&nbsp;<a href="#Ib">-I B</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;














      Use BT.1886 source EOTF with technical gamma 2.4</tt><tt><br>
    </tt><tt>&nbsp;<a href="#Ib">-I b:g.g</a>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Use
      BT.1886-like source EOTF with effective gamma g.g</tt><tt><br>
      &nbsp;</tt><tt><a href="#Ib">-I b:p.p:g.g</a>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Use effective gamma g.g source EOTF
      with p.p prop. output black point offset</tt><span
      style="font-family: monospace;"><span style="font-family:
        monospace;"></span></span><br>
    <span style="font-family: monospace;"><span style="font-family:
        monospace;"><tt>&nbsp;<a href="collink.html#Ib">-I g:g.g</a>
          &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Use
          effective gamma g.g source EOTF with all output black point
          offset</tt><br>
      </span>&nbsp;<a href="#e">-e flag</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;




































      Video encode input as:<br>
      &nbsp;<a href="#E">-E flag</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;




































      Video encode output as:</span><span style="font-family:
      monospace;"><span style="font-family: monospace;"><br>
        &nbsp;&nbsp;&nbsp;&nbsp;
        n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

























        normal RGB 0..1 levels (default)<br>
        &nbsp;&nbsp;&nbsp;&nbsp;
        t&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

























        RGB (16-235)/255 "TV" levels</span></span><br>
    <span style="font-family: monospace;"><span style="font-family:
        monospace;"><span style="font-family: monospace;"><span
            style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp; T
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

























            RGB (16-235)/255 "TV" levels, clip WTW [Input Only]</span></span><br>
        &nbsp;&nbsp;&nbsp;&nbsp;
        6&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

























        Rec601 YCbCr SD (16-235,240)/255 "TV" levels<br>
        &nbsp;&nbsp;&nbsp;&nbsp;
        7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

























        Rec709 1125/60Hz YCbCr HD (16-235,240)/255 "TV" levels<br>
        &nbsp;&nbsp;&nbsp;&nbsp;
        5&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

























        Rec709 1250/50Hz YCbCr HD (16-235,240)/255 "TV" levels<br>
        &nbsp;&nbsp;&nbsp;&nbsp;
        2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

























        Rec2020 YCbCr UHD (16-235,240)/255 "TV" levels<br>
        &nbsp;&nbsp;&nbsp;&nbsp;
        C&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

























        Rec2020 Constant Luminance YCbCr UHD (16-235,240)/255 "TV"
        levels<br>
        &nbsp;&nbsp;&nbsp;&nbsp;
        x&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

























        xvYCC Rec601 YCbCr Rec709 Prims. SD (16-235,240)/255 "TV" levels<br>
        &nbsp;&nbsp;&nbsp;&nbsp;
        X&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

























        xvYCC Rec709 YCbCr Rec709 Prims. HD (16-235,240)/255 "TV" levels<br>
      </span>&nbsp;</span>&nbsp; <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.x3d.html and gammap_s.x3d.html diagostics</span><br>
    <span style="font-family: monospace;"></span><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><span style="font-family: monospace;">TIFF or
      JPEG file with embedded profile may be used here.</span><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><span
      style="font-family: monospace;">TIFF or JPEG file with embedded
      profile may be used here.</span><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. Note
    that both input and output curves will not be preserved if a 3d LUT
    output is selected.<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> parameter allows 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>
    <a name="a"></a> The <b>-a</b> parameter causes calibration curves
    in the supplied file to be applied after the link of the profiles.
    This is used as an alternative to calibration curves being loaded
    into the graphics card VideoLut. For MadVR 3dlut output, a linear
    set of calibration curves will also be appended to the 3dlut,
    ensuring that the correct VideoLUT curves get loaded at the time the
    3dLut is used by MadVR v0.86.9 or latter. By default no calibration
    curves are appended to a MadVR 3dLut.<br>
    <br>
    <a name="H"></a> The <b>-H</b> parameter causes calibration curves
    in the supplied file to be appended to a MadVR 3dlut output,
    ensuring that the correct VideoLUT curves get loaded at the time the
    3dLut is used by MadVR v0.86.9 or latter. By default no calibration
    curves are appended to a MadVR 3dLut.<br>
    <br>
    <a name="O"></a> The <b>-O</b> parameter causes calibration curves
    in the supplied file to be use to creat the link. ICC profiles are
    not expectedt or used. This option allows a device link to be used
    to apply just per channel calibraion curves. Note that many normal
    options will be ignored or may cause unexpected results when used
    with this option.<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 better results that gamut mapping from the gamut of
    the source colorspace, particularly if the source colorspace (i.e.
    ProPhoto etc.) has a gamut much larger than the images encoded in
    that space. 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 better
    results that gamut mapping from the gamut of the source colorspace,
    particularly if the source colorspace (i.e. ProPhoto etc.) has a
    gamut much larger than the images encoded in that space. 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>
    <a name="Gp"></a>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 from white to black 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="ilp"></a>The&nbsp; <span style="font-weight: bold;">lp</span>
      intent, Luminance Preserving Perceptual Appearance uses
      compression to make the source gamut fit within the destination
      gamut, but very heavily weights the preservation of the Luminance
      value of the source, which will compromise the preservation of
      saturation. No contrast enhancement is used if the dynamic range
      is reduced. This intent may be of use where preserving the tonal
      distinctions in images is more important than maintaining overall
      colorfulness or contrast.<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 Colorimetric (Lab), is similar to intent <span
        style="font-weight: bold;">a</span>, but <b>L*a*b*</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>
      <br>
      <a name="iar"></a>The <span style="font-weight: bold;">ar</span>
      intent, White Point Matched Colorimetric (Lab), is similar to
      intent <span style="font-weight: bold;">r</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="b"></a> The <b>-b</b> flag forces RGB source 0,0,0 to map
    to RGB destination 0,0,0. This may be useful for Video
    proofing/calibration purposes, where the source is a standard
    colorspace such as Rec709, and the display device is <u>well
      behaved</u> with black at 0,0,0, and forcing the black mapping
    avoids any slight raising of the black due to display profile
    tolerances. On the other hand, any "dead zone" above zero device
    input, won't be corrected.<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 already 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>
    <a name="3"></a>The <b>-3</b> <i>flag</i> triggers creation of a
    "3dLut" of one of the following formats:<br>
    &nbsp;&nbsp;&nbsp; <b>e</b>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; <a
      href="http://www.eecolor.com/">eeColor </a>format ".txt" files.
    This includes 3 input curve files, the cLut file and 3 output curve
    files.<br>
    &nbsp;&nbsp;&nbsp; <b>m</b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a
      href="http://forum.doom9.org/showthread.php?t=146228&amp;page=22">MadVR</a>
    format ".3dlut" file.<br>
    <br>
    Some hardware devices and other software make use of cLUT type
    tables that are analogous to ICC device links, but are typically
    less sophisticated and flexible. The <b>-3</b> flag allows creation
    of some of these file formats as well as the normal ICC device link.
    Choosing one of these formats will typically also configure various
    other parameters to default values suitable for that format, such as
    the&nbsp; table resolution (<b>-r</b>), and the use of 1D input and
    output curves (<b>-n</b>). Other parameters (such as <b>-I</b>, <b>-e</b>
    and <b>-E</b>) may have to be set to get a table suitable for the
    particular target and situation.<br>
    <br>
    The <b>-3 e</b> eeColor format is basically a 65^3 cLUT, but the
    hardware is unable to map a 1.0 input value to anything other than
    1.0 output. If one of the video input encodings is being used (<b>-e
      t</b> or <b>-e 7</b> etc.), then this is not an issued, since a
    1.0 input is not used for image data. For normal (full) input range
    (ie. if the eeColor is being used to process the output of a
    computer Video card, and the video card is not encoding using TV
    values), then this is a problem, and collink will compensate for
    this by creating a set of per channel input curve files that can be
    loaded into the eeColor. The xvYCC encoding (<b>-e x</b> and <b>-e
      X</b>) uses almost the full range of values for the Cb &amp; Cr
    values, and also needs per channel input curves to allow a full
    range of mapping.<br>
    <br>
    &nbsp;For this reason collink generates the following 7 files:<br>
    <br>
    &nbsp;&nbsp;&nbsp; basename-first1dred.txt<br>
    &nbsp;&nbsp;&nbsp; basename-first1dgreen.txt<br>
    &nbsp;&nbsp;&nbsp; basename-first1dblue.txt<br>
    &nbsp;&nbsp;&nbsp; test.txt <br>
    &nbsp;&nbsp;&nbsp; basename-second1dred.txt<br>
    &nbsp;&nbsp;&nbsp; basename-second1dgreen.txt<br>
    &nbsp;&nbsp;&nbsp; basename-second1dblue.txt<br>
    <br>
    even though the 1d files will be linear for all cases except the
    normal and xvYCC input range.<br>
    <br>
    The MadVR format is an 8 bit input, 16 bit output cLUT of 100 Mbytes
    size, and will written to the file <b>basename.3dlut</b>. If the -a
    or -H options are used, then the MadVR 3dLut will have a set of
    appropriate per channel calibration curves appended to the 3dLut, to
    ensure that the hardware is correctly set for it if used with MadVR
    V0.86.9 or latter. This functionality is analogous to a 'VCGT' tag
    in a normal ICC display profile.<br>
    <br>
    There is more information on the <a href="Scenarios.html">Typical
      Usage Scenarios</a> page.<br>
    <b><br>
      <a name="Ib"></a></b>The <b>-I [b|B|g|G][:p.p][:g.g]</b> series
    of options, substitutes an alternative EOTF (Electro-Optical
    Transfer Function) for the one specified by the matrix input
    profile. This is typically used for creating Video display
    emulations.<br>
    <br>
    The basic curve is a pure power curve with scaling and a combination
    of input black offset and/or output black offset. The choice of flag
    determines the way the power value is interpreted, and the default
    balance between input and output black offset handling.<br>
    <br>
    The lower case <b>b</b> and <b>g</b> flags use an effective power
    value specification, where the 50% input maps to the same output
    value as a pure power curve with a perfect black. These are the
    recommended flags to use, since this means that the overall contrast
    of the reproduction will not be affected so much by differences and
    variations in the black level, or how the black level is accounted
    for. The default effective power value is 2.2.<br>
    <br>
    The upper case <b>B</b> and <b>G</b> flags use a technical power
    value specification, where the power value is the actual one that
    will be used. The end result will vary much more with the black
    level of the display though. The default technical power value is
    2.4.<br>
    <br>
    The <b>b</b> and <b>B</b> flags default to the black level being
    accounted for as a full input offset, where the power curve is
    shifted and scaled to match the black point, preserving the black
    shadow tonality. This is what <a
      href="http://www.itu.int/rec/R-REC-BT.1886-0-201103-I">BT.1886</a>
    uses.<br>
    <br>
    The <b>g</b> and <b>G</b> flags default to the black level being
    accounted for as a full output offset, where the power curve is
    scaled to allow for the black point, losing some black shadow
    tonality with higher black points. This is what many people think of
    as a "pure" power curve, even though this is not possible unless the
    display has a perfect zero black level.<br>
    <br>
    The optional <b>:g.g</b> value is the power to be used. This will
    be an effective value if the <b>b</b> or <b>g</b> flags is used,
    or the technical value if the <b>B</b> or <b>G</b> flag is used.
    This is the primary way to make an allowance for the brightness of
    the viewing environment for Video . Darker viewing environments
    probably need a larger gamma value, while lighter viewing
    environments probably need a lower value.<br>
    <br>
    The second optional <b>:p.p</b> value is the proportion of black
    value that should be accounted for as output offset (the gamma value
    must also be specified after this). This defaults to 0.0 for the <b>b</b>
    and <b>B</b> flags, and 1.0 for the <b>g</b> and <b>G</b> flags,
    but by specifying it explicitly as a value between 0.0 and 1.0, a
    hybrid curve characteristic can be obtained. Setting a hybrid value
    is a way of maintaining black shadow tonality while being able to
    control how much detail is retained in those shadows. An appropriate
    value may depend on exactly how the video material was mastered.<br>
    <br>
    Illustrative combinations are:<br>
    <br>
    <b>-I b</b><b>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
      &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </b>Full
    input offset (BT.1886 like) with effective gamma of 2.2<b><br>
    </b><b>-I g</b><b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;














    </b>Full output offset with effective gamma of 2.2<b><br>
    </b><b></b><b>-I B</b><b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;














    </b>Full input offset (BT.1886 like) with technical gamma of 2.4.
    This exactly implements the BT.1886 specification.<b><br>
    </b><b>-I G</b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;














    Full output offset with technical gamma of 2.2<br>
    <br>
    <b>-I b</b><b>:2.3</b><b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;














    </b>Full input offset (BT.1886 like) with effective gamma of 2.3<b>
      <br>
    </b><b> -I g:2.3</b><b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;














    </b>Full output offset with effective gamma of 2.3<b><br>
    </b><b> -I B:2.35</b><b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;














    </b>Full input offset (BT.1886 like) with technical gamma of 2.35<br>
    <b> -I G:2.35</b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;














    Full output offset with technical gamma of 2.35<br>
    <br>
    <b>-I b</b><b>:0.4:2.3</b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
    60% input offset, 40% output offset with effective gamma of 2.3<b></b><br>
    <b> -I g:0.4:2.3</b><b>&nbsp;</b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;














    Same as above.<b><br>
    </b><b> -I B:0.4:2.35</b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 60% input
    offset, 40% output offset with technical gamma of 2.35 <b><br>
    </b><b> -I G:0.4:2.35</b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Same as
    above.<br>
    <b><br>
      <a name="e"></a></b>The <b>-e</b> <i>flag</i> applies a Video
    encoding to the input. See below<b> and</b> <a href="#E"><b>-E</b></a>
    for the list of encodings.<br>
    <br>
    <br>
    <small><span style="font-family: monospace;"><small><span
            style="font-family: monospace;"><small><span
                style="font-family: monospace;"><small><span
                    style="font-family: monospace;"><small><span
                        style="font-family: monospace;"><small><span
                            style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;







                            T
                            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

























                            RGB (16-235)/255 "TV" levels, clip WTW
                            [Input Only]<br>
                          </span></small></span></small></span></small></span></small>&nbsp;&nbsp;&nbsp;&nbsp;








            x&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

























            xvYCC Rec601 YCbCr Rec709 Prims. SD (16-235,240)/255 "TV"
            levels<br>
            &nbsp;&nbsp;&nbsp;&nbsp;
            X&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

























            xvYCC Rec709 YCbCr Rec709 Prims. HD (16-235,240)/255 "TV"
            levels</span></small></span></small><br>
    <br>
    When xvYCC is chosen, the encoding is either a Rec601 YCbCr or
    Rec709 YCbCr with extended range Cb and Cr values, and a hard coded
    Rec709 source colorspace, corresponding to the xvYCC specifications.
    The <a href="#p1">source profile</a> provided to collink is used to
    define the source gamut for gamut mapping, and also the space that
    any <a href="#Ib">BT.1886</a> processing will be performed in. For
    instance, if the xvYCC is being used to encode a larger gamut such
    as UHD Rec2020, or Digital Cinema SMPTE431 P3, then the
    corresponding ICC profile should be provided as the source profile.<br>
    <br>
    The <b>-e T</b> option uses the same encoding as <b>-e t</b>, but
    rather than handling WTW (Whiter Than White, or out of range values)
    using extrapolation, it clips them to the valid range by scaling
    them, to preserve hue. This can be useful if you are dealing with
    source material that has WTW values, but your TV or Video display
    clips these out of range values in a way that alters the hue.<br>
    <br>
    <b><a name="E"></a></b>The <b>-E</b> <i>flag</i> applies a Video
    encoding to the output. The possible encoding are:<br>
    <br>
    <small><span style="font-family: monospace;"><small><span
            style="font-family: monospace;">&nbsp;&nbsp;&nbsp;&nbsp;
            n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

























            normal RGB 0..1 full range levels (default)<br>
            &nbsp;&nbsp;&nbsp;&nbsp;
            t&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

























            RGB (16-235)/255 "TV" levels</span></small></span></small><small><span
        style="font-family: monospace;"><small><span style="font-family:
            monospace;"></span></small></span></small><br>
    <small><span style="font-family: monospace;"><small><span
            style="font-family: monospace;"><small><span
                style="font-family: monospace;"></span></small>&nbsp;&nbsp;&nbsp;&nbsp;








            6&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

























            Rec601 YCbCr SD (16-235,240)/255 "TV" levels<br>
            &nbsp;&nbsp;&nbsp;&nbsp;
            7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

























            Rec709 1125/60Hz YCbCr HD (16-235,240)/255 "TV" levels<br>
            &nbsp;&nbsp;&nbsp;&nbsp;
            5&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

























            Rec709 1250/50Hz YCbCr HD (16-235,240)/255 "TV" levels<br>
            &nbsp;&nbsp;&nbsp;&nbsp;
            2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

























            Rec2020 YCbCr UHD (16-235,240)/255 "TV" levels<br>
            &nbsp;&nbsp;&nbsp;&nbsp;
            C&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

























            Rec2020 Constant Luminance YCbCr UHD (16-235,240)/255 "TV"
            levels</span></small></span></small><br>
    <small><span style="font-family: monospace;"><small><span
            style="font-family: monospace;"></span></small></span></small><br>
    The <b>-e t</b> option assumes TV encoding range 16-235, and
    preserves WTW (Whiter Than White, or out of range values) using
    extrapolation, as long as per channel input and output curves are
    disabled (see the <a href="#n">-n</a> option), which is
    automatically the case if a <a href="#3">3dlut</a> output format is
    selected.<br>
    <br>
    <b><a name="P"></a></b>The <b>-P</b> option causes a diagnostic 3D
    <a href="File_Formats.html#X3DOM">X3DOM</a> plots to be created that
    illustrate the gamut mapping generated.<br>
    <br>
    <a name="p1"></a>The <i><b>srcprofile</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. This argument must be
      omitted if the <a href="#O">-O</a> option is used.</small><br>
    <br>
    <a name="p2"></a>The<i><b> dstprofile</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><small>This argument must be omitted if
      the <a href="#O">-O</a> option is used.</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>
    <h3>Discussion</h3>
    The viewing condition parameter <b>m:</b> is a hack, intended to
    address certain situations involving the use of papers containing
    FWA/OBE brighteners when viewed in an environment that has a very
    noticeably warmer white point than the paper itself under the
    illuminant. While the white point will remain that of the paper, it
    allows the mid-tones to be partially adapted to a warmer white
    point, possibly reducing visual discrepancy. NOTE though, that this
    viewing situation doesn't often arise in real world viewing of such
    media,&nbsp; as such documents are typically viewed in isolation or
    against a background of other pieces of the same paper. Note that it
    is a trap to evaluate such FWA/OBE rich paper using standard
    proofing viewing conditions, since they deliberately use a
    spectrally flat grey surround, unnaturally emphasizing the white
    point difference between FWA/OBE rich papers and spectrally flat
    neutrals, something that isn't present in real world conditions. The
    <b>pm</b> preset condition has mtaf value of 0.7, and Wxyz2 of D50.<br>
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