[argyllcms] rendering intent colprof and xicclu

  • From: prathana shrestha <prarthana_shrestha@xxxxxxxxxxx>
  • To: <argyllcms@xxxxxxxxxxxxx>
  • Date: Thu, 19 Jan 2012 12:00:23 +0000

Hi

I'm using colprof (with option -am) and profcheck for profiling a scanner using 
Kodak IT8 chart, and xicclu for color space conversion. According to the 
generated profile, the rendering intent is relative colorimetric as I would 
like to have. So I would expect that the RGB to Lab values in the profcheck 
file is based on relative colorimetric rendering. But when I use the xicclu 
(with option -ir), I get different results; while xicclu (with option -ia) 
gives the same result as obtained in tge profcheck file.  Now I am confused, if 
the rendering intents mean different for colprof and xicclu or something else. 
Answers please!
Here is an example from the profcheck file, which matches with xicclu -ia:GS00: 
0.489090 0.514540 0.490160 -> 90.990517 -1.809602 -0.769897 should be 91.315673 
3.477132 0.326901
Here is the result from xicclu (with option -ir):0.489090 0.514540 0.490160 
[RGB] -> MatrixFwd -> 100.000116 -0.000804 0.000767 [Lab]
prarthana                                         

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