6.4. Color Management

6.4. Color Management
	6. Preferences Dialog

Note

For color profile related actions of an image file, see Section 6.8, « Gestion des couleurs ».

For color display related view settings, see Section 5.12, « Gestion des couleurs ».

Figure 15.71. Réglage des profils colorimétriques ICC dans GIMP

This page lets you customize GIMP color management.

6.4.1. Options

Some of the options let you choose a color profile from a menu. If the desired profile is not present in the menu yet, you can add it by clicking on Select color profile from disk….

	Astuce
	Files containing color profiles are easily recognizable by their `.icc` suffix. In addition to that they are usually stored together in only a few places. If you are running GIMP on Mac OS X, you should try `/Library/ColorSync/Profiles/` and `Library/Printers/[manufacturer]/Profiles`.

mode d’affichage de l’image

Using this option, you can decide how GIMP color management operates. There are three modes you can choose from:

No color management: choosing this shuts down color management in GIMP completely.
Color managed display: this enables GIMP color management and provides a fully corrected display of the images according to the given color profile for the display.

Soft-proofing: when choosing this option, you enable GIMP color management not only to apply the profile for the display, but also for the selected printer simulation profile. Doing so, you can preview the color results of a print with that printer.

	Note
	Please note, that GIMP color management is used to enhance the display of images and the embedding of profiles to image files only. More specifically, the options you choose in this dialog are not used for printing from within GIMP. This is because printing is a special task done by a printing engine that is not part of GIMP.

Affichage avec gestion des couleurs

Monitor profile

None: GIMP uses the colorimetric profile of your monitor.
Select color profile from disk: choose a profile that you have available on your computer.

Try to use the system monitor profile

When enabled, GIMP will try to use the display color profile supplied by the system. The configured monitor profile is then only used as a fallback.

Intention de rendu

Cette option concerne la façon dont les couleurs sont converties de l’espace de couleurs de l’image vers le périphérique d’affichage. Quatre modes sont disponibles : « Perceptuel », « Colorimétrique relatif », « Saturation » « Colorimétrique absolu ».

Relative colorimetric is usually the best choice (default). Unless you use a LUT monitor profile (most monitor profiles are matrix), choosing perceptual intent actually gives you relative colorimetric. See also Rendu des couleurs .

Utiliser la compensation du point noir

Cette option est cochée par défaut. Utilisez la compensation du point noir, à moins que vous ayez une bonne raison de ne pas le faire.

Optimize image display for:

Two options: Speed and Precision / Color Fidelity. « Speed » is activated by default. If not, image display might be better at the cost of speed.

Soft-proofing

Soft-proofing is a mechanism that allows you to see on your screen what printing on paper will look like. More in general, it is soft-proofing from the color space of your image to another color space (printer or other output device).

Optimiser l’épreuve sur écran pour :

Two options: Speed and Precision / Color Fidelity. « Speed » is activated by default. If not, soft-proofing might be better at the cost of speed.

Marquer les couleurs de gamut

When this box is checked, the soft-proofing will mark colors that can not be represented in the target color space. On the right there is a color button that you can click to open a color selector to choose the color you want to be used for marking out of gamut colors.

Profils préférés

RGB profile

Default is « None », which causes the built-in RGB profile to be used. You can select another RGB working space color profile from disk: it will be offered next to the built-in profile when a color profile can be chosen.

Grayscale profile

Default is « None », which causes the built-in Grayscale profile to be used. You can select another Grayscale working space color profile from disk: it will be offered next to the built-in profile when a Grayscale profile can be chosen.

CMYK profile

Le choix par défaut est « Aucun ». On peut aussi sélectionner un autre profil d’espace de couleur CMJN depuis le disque pour convertir RVB en CMJN.

Politiques

Comportement à l’ouverture d’un fichier

Default is « Ask what to do ». You can also select « Keep embedded profile », « Convert to built-in sRGB or grayscale profile », or « Convert to preferred RGB or grayscale profile (defaulting to built-in) » to indicate how to treat embedded color profiles when opening an image file.

Note

Pour de plus amples explications :

Les Profils ICC sont expliqués dans Wikipedia [WKPD-ICC].
See OpenICC project ([OPENICC]) where GIMP and other great names of free infography contribute to.

Some online available color profiles:

Profil d’espace de travail ICC sRVB : ICCsRGB™[ICCsRGB]
Adobe RGB98 Workspace: Adobe RGB (1998)™ [AdobeRGB]
Profils ECI (European Color Initiative) : ECI™[ECI]

Filter Dialogs

Afficher les options de couleur avancées : les options de couleur avancées ne sont pas visibles dans les fenêtre de dialogue des filtres si cette option n’est pas cochée.