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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></small><br>
    <small><span style="font-family: monospace;"><small><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></small> 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 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></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)<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]</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:imagewhite&nbsp;
        Image white in cd.m^2 if surround = auto (default 250)</span></small><br
      style="font-family: monospace;">
    <small><span style="font-family: monospace;"><small><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></small>&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 1)</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;">
      <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>
        &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></small><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</tt><br>
    <small><span style="font-family: monospace;"><small><span
            style="font-family: monospace;">&nbsp;<a href="#Ib">-I b</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;




















            Apply BT.1886-like mapping with effective gamma 2.2 to input</span></small><br>
        <small><span style="font-family: monospace;"><small><span
                style="font-family: monospace;">&nbsp;<a href="#Ib">-I
                  b:g.g</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;













                Apply BT.1886-like mapping with effective gamma g.g to
                input<br>
              </span></small></span></small>&nbsp;<a href="#IB">-I B</a>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;













        Apply BT.1886 mapping with technical gamma 2.4 to input</span></small><br>
    <small><span style="font-family: monospace;"><small><span
            style="font-family: monospace;">&nbsp;<a href="#IB">-I B:g.g</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;













            Apply BT.1886-like mapping with technical gamma g.g to input<br>
          </span></small>&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></small><small><span
        style="font-family: monospace;"><small><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<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></small>&nbsp;</span></small>&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>
      <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> 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>
    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 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="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="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;
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      &nbsp; &nbsp;/<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
|&nbsp;&nbsp;&nbsp;&nbsp;
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      &nbsp; /<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
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      &nbsp;/<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
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      /<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> flag applies extra input
    processing, applying <a
      href="http://www.itu.int/rec/R-REC-BT.1886-0-201103-I">BT.1886</a>-like













    video gamma mapping using an effective gamma of 2.2 by default, and
    overridable using <b>-I b:g.g</b> where <b>g.g</b> is the gamma.
    The gamma is an effective gamma, meaning that its effect on 50%
    input is the same as that of a pure power curve, in spite of any
    black offset added by BT.1886. This has the benefit of making the
    overall effect of brightness independent of the black level of the
    display. Setting an effective gamma other than 2.2 is one way of
    making the viewing condition adjustment for the different conditions
    of video encoding and decoding, or for modelling the source
    colorspace as a rendering on a video display. This would be used as
    an alternative to using gamut mapping mode and setting explicit
    input and output viewing conditions, or in combination with
    appearance adjustments. BT.1886 will only work with matrix type
    input profiles. The default value of 2.2 is probably suitable for
    dim viewing conditions, and it may be desirable to override this
    default if your viewing conditions are darker or lighter. For
    lighter conditions, try "-I b:2.2". For darker conditions, try "-I
    b:2.6".<br>
    <br>
    <b><a name="IB"></a></b>The <b>-I B</b> flag applies extra input
    processing, applying <a
      href="http://www.itu.int/rec/R-REC-BT.1886-0-201103-I">BT.1886</a>
    video gamma mapping using the BT.1886 gamma of 2.4 by default, and
    overridable using <b>-I b:g.g</b> where <b>g.g</b> is the gamma.
    The gamma is the technical gamma, or power applied to the input
    image, and this means that its effect on 50% input will depend on
    the black level of the display, making the overall brightness
    somewhat unpredictable. For a more predictable effect, use <b>-I b</b>.<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>
    <small><span style="font-family: monospace;"><small><span
            style="font-family: monospace;">&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>
    <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<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>
          </span></small></span></small><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>
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