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Clarisse 5.0 Reference Guide

Clarisse Color Management system is mainly based on the industry standard open source solution OpenColorIO (OCIO). For more information on OCIO, please refer to its documentation here: https://opencolorio.readthedocs.io/en/latest/

 

By default, the view transform of the application is set to sRGB and all colors, gradients and images displayed in the user interface are color managed using the view transform defined in the application preferences. Please note, this setting doesn't affect internal computations since they are always performed in Linear sRGB.

 

The view transform of the application can be changed at anytime by going to Edit > Preferences... > Color Management. You can find there the Default View Transform setting which define the view transform used by the user interface when displaying color information. To change the view transform use the Default View Transform pull down.

 

It is also possible to set the the color space of the Color Picker independently of the application view transform using Color Picker Color Space. By default, it uses the one defined by the OCIO configuration.

 

Finally it is possible to associate, color space to file formats so that textures and images are properly imported with the correct color space in the application.

OCIO Configuration File

Instead of using the default color management configuration of Clarisse, it is possible to use a custom OCIO configuration file or the industry standard ACES OCIO one which can be found here. To setup an OCIO configuration file, go to Edit > Preferences... > Color Management, set Ocio Config File to the file you wish to use and  make sure to enable Use Ocio Config File. Clarisse will automatically load the color configuration which will be properly available in texture maps and color managed user interface widgets. Once the file is loaded, make sure to check if the File Format Color Space Mapping doesn't reference nonexistent color spaces. Go to Image > Edit File Format/Color Space Mapping... to open the File Format Color Space Mapping window. Every time you'll see a red line, then the mapping references an invalid color space that doesn't exist anymore. Once done, please restart Clarisse because if you don't, any texture maps in the project that are set to Color Space Auto Detect will fail to update properly to their new color space.

Note

When enabling Use Ocio Config File while Ocio Config File field is empty, the application will automatically try to resolve the global variable $OCIO to look up for a configuration file. When Ocio Config File isn't empty the application ignores $OCIO even if it has been defined.

File Format Color Space Mapping

Since we can't always rely on image metadata to detect the color space of images, Clarisse offers a way to associate with each format a specific color space. This way, when you import an image in Clarisse, Clarisse automatically looks up at the file extension to find out which color space it should use. This automatic color space association is enabled by default but can be disabled by unchecking the Color Space Auto Detect attribute in the image. Setting the correct color space to an image is very important to properly render images and textures.

 

To edit the File Format Color Space Mapping Configuration, go to Image > Edit File Format/Color Space Mapping...

 

 

(1) Format Names (2) Extensions (3) Color Space (4) Add File Format (5) Remove File Format (6) File Format Name (7) File Format Extensions (8) File Format Color Space

 

The File Format Color Space Mapping window is very straightforward to use. The window displays the list of supported file format (1), associated extensions (2) and color space (3). To add a new file format/color space mapping, you just have to click on Add File Format (4) and set a new name to identify the new file format using (6), define a single or multiple extensions separated by a , in (7) and specify the mapped color space using (8). To remove a file format mapping, just select it in the list and press Remove File Format (5).

 

Click on Cancel or press Esc to cancel all modifications. Click Ok to apply your settings. Once done, you have to restart Clarisse because if you don't, any texture maps in the project that are set to Color Space Auto Detect will fail to update properly to their new color space.

Note

The File Format Mapping is displayed in red when Clarisse doesn't find the associated color space which can happen when changing OCIO configuration file.

Color Manager

Clarisse offers a very simple Color Manager that allows you to manage custom LUTs and CDLs. To open the Color Manager go to Image > Color Manager or press Ctrl+J. The widget is pretty straightforward to use for anyone having a strong color science background.

 

Color Space Editor

Color Space Editor

CDL Editor

CDL Editor

 

Note

Unless you are a color expert, we strongly encourage you to use a OCIO configuration file.

Color Correction Collections

It is possible to use a CDL library file for the Color Manager. Go to Edit > Preferences... > Color Management and specify a standard XML CCC file to CDL Library File. The Color Manager will append the content of the configuration to the existing LUTs/CDLs defined in the application.

 

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