Intro gestion de la couleur - Clermont'ech

Transcript

1. MANAGING COLORS IN GPGPU
   CLERMONT’ECH
   mardi 29 octobre 2013
   Nabil Boukala
   

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2. COLOR CONTROL THROUGH GRAPHIC CHAIN
   PRODUCED COLOR ≠ PERCEIVED COLOR
   

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3. IN OR OUT GAMUT?
   R=255
   G=193
   B=5
   Lab
   XYZ
   xyY
   Profile Profile
   Very nice, but … each device has his own COLOR GAMUT
   

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4. COMMUNICATE COLORS WITH EVOLVING LANGUAGES
   

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5. COLOR MANAGEMENT WORKFLOW
   Pixels
   RGB
   Colors
   Lab
   225,70,60
   _ , _ , _
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   80,0.5,0.2
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   RGB
   RVB
   CMYK
   Lab
   Pixels
   RGB
   Colors
   Lab
   235,75,80
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   80,0.5,0.2
   _ , _ , _
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   ICC Profile
   ICC Profile
   Values
   CMYK
   Colors
   Lab
   2,75,80,5
   _, _ , _ ,_
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   _, _ , _ ,_
   _, _ , _ ,_
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   80,0.5,0.2
   _ , _ , _
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   _ , _ , _
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   ICC Profile
   conversion
   

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6. SOFT-PROOFING
   

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7. Provenance:
   périph
   source
   IMAGE
   RGB
   Périph
   simulé
   IMAGE
   LAB/
   XYZ
   Écran
   d’affichage
   IMAGE
   LAB/
   XYZ
   IMAGE
   RGB
   SOFTPROOFING WORKFLOW AND GPGPU
   LARGE DIMENSION IMAGES
   ADDITIONNAL SIMULATION PARAMETERS: LIGHTING, CUSTOM COLOR TRANS., …
   IN REALTIME
   => NEED FOR COMPUTATIONAL POWER
   

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