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LOOKUP(1) User Commands LOOKUP(1)


Lookup - Translate colors through an xicc.


Lookup ICC or CAL colors, Version 1.6.3


xicclu [-options] profile_or_cal
-v level
Verbosity level 0 - 2 (default = 1)
Plot slice instead of looking colors up. (Default white to black)
-G s:L:a:b
Override plot slice start with Lab or Jab co-ordinate
-G e:L:a:b
Override plot slice end with Lab or Jab co-ordinate
-f function
f = forward, b = backwards, g = gamut, p = preview if = inverted forward, ib = inverted backwards
-i intent
a = absolute, r = relative colorimetric p = perceptual, s = saturation
-o order
n = normal (priority: lut > matrix > monochrome) r = reverse (priority: monochrome > matrix > lut)
-p oride
x = XYZ_PCS, X = XYZ * 100, l = Lab_PCS, L = LCh, y = Yxy j = CIECAM02 Appearance Jab, J = CIECAM02 Appearance JCh
-s scale
Scale device range 0.0 - scale rather than 0.0 - 1.0
-e flag
Video encode device input as:
-E flag
Video decode device output as:
normal 0..1 full range RGB levels (default)
(16-235)/255 "TV" RGB levels
Rec601 YCbCr SD (16-235,240)/255 "TV" levels
Rec709 1125/60Hz YCbCr HD (16-235,240)/255 "TV" levels
Rec709 1250/50Hz YCbCr HD (16-235,240)/255 "TV" levels
Rec2020 YCbCr UHD (16-235,240)/255 "TV" levels
Rec2020 Constant Luminance YCbCr UHD (16-235,240)/255 "TV" levels
-k [zhxrlv]
Black value target: z = zero K, h = 0.5 K, x = max K, r = ramp K (def.) l = extra PCS input is portion of K locus v = extra PCS input is K target value

-k p stle stpo enpo enle shape

stle: K level at White 0.0 - 1.0 stpo: start point of transition Wh 0.0 - Bk 1.0 enpo: End point of transition Wh 0.0 - Bk 1.0 enle: K level at Black 0.0 - 1.0 shape: 1.0 = straight, 0.0-1.0 concave, 1.0-2.0 convex

-k q stle0 stpo0 enpo0 enle0 shape0 stle2 stpo2 enpo2 enle2 shape2

Transfer extra PCS input to dual curve limits
-K parameters
Same as -k, but target is K locus rather than K value itself
-l tlimit
set total ink limit, 0 - 400% (estimate by default)
-L klimit
set black ink limit, 0 - 100% (estimate by default)
show actual target values if clipped
warn if output PCS is outside the spectrum locus
merge output processing into clut
use CAM Jab for clipping
-c viewcond
set viewing conditions for CIECAM97s, either an enumerated choice, or a parameter:value changes
pp - Practical Reflection Print (ISO-3664 P2) pe - Print evaluation environment (CIE 116-1995) pc - Critical print evaluation environment (ISO-3664 P1) mt - Monitor in typical work environment mb - Bright monitor in bright work environment md - Monitor in darkened work environment jm - Projector in dim environment jd - Projector in dark environment tv - Television/Film Studio
pcd - Photo CD - original scene outdoors
ob - Original scene - Bright Outdoors cx - Cut Sheet Transparencies on a viewing box
n = auto, a = average, m = dim, d = dark, c = transparency (default average)
Adapted white point as XYZ (default media white, Abs: D50)
Adapted white point as x, y
Adaptation luminance in cd.m^2 (default 50.0)
Background % of image luminance (default 20)
Image white in cd.m^2 if surround = auto (default 250)
Flare light % of image luminance (default 0)
Flare light % of ambient (default 1)
Flare color as XYZ (default media white, Abs: D50)
Flare color as x, y
The colors to be translated should be fed into standard in, one input color per line, white space separated. A line starting with a # will be ignored. A line not starting with a number will terminate the program. Use -v0 for just output colors.
September 2014 xicclu